Table Of Contents
show ip dvmrp route
show ip igmp groups
show ip igmp interface
show ip igmp membership
show ip igmp snooping
show ip igmp snooping explicit-tracking
show ip igmp snooping filter
show ip igmp snooping mrouter
show ip igmp snooping rate-limit
show ip igmp snooping statistics
show ip igmp ssm-mapping
show ip igmp static-group class-map
show ip igmp udlr
show ip mcache
show ip mfib
show ip mfib active
show ip mfib count
show ip mfib interface
show ip mfib route
show ip mfib status
show ip mfib summary
show ip mpacket
show ip mr proxy
show ip mrib client
show ip mrib route
show ip mrib route summary
show ip mrm interface
show ip mrm manager
show ip mrm status-report
show ip mroute
show ip msdp count
show ip msdp peer
show ip msdp rpf-peer
show ip msdp sa-cache
show ip msdp summary
show ip multicast
show ip multicast interface
show ip multicast redundancy state
show ip multicast redundancy statistics
show ip multicast rpf tracked
show ip multicast topology
show ip pgm host defaults
show ip pgm host sessions
show ip pgm host traffic
show ip pgm router
show ip dvmrp route
Note 
The show ip dvmrp route command is not available in 12.2(33)SRB, 15.0(1)M, and later 12.2SR, 15.0M, and T releases.
To display the contents of the Distance Vector Multicast Routing Protocol (DVMRP) routing table, use the show ip dvmrp route command in user EXEC or privileged EXEC mode.
show ip dvmrp route [address hostname | interface type number] [poison]
Syntax Description
address
|
(Optional) Displays information about the specified DVMRP route.
|
hostname
|
(Optional) IP name or IP address.
|
interface
|
(Optional) Displays information about the specified interface from the DVMRP routing table.
|
type
|
(Optional) Interface type.
|
number
|
(Optional) Interface or subinterface number.
|
poison
|
(Optional) Displays information about DVMRP routes that have been poisoned.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
10.3
|
This command was introduced.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA and the poison keyword was added.
|
12.2(33)SRB
|
This command was removed. It is not available in Cisco IOS Release 12.2(33)SRB and later Cisco IOS 12.2SR releases.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
15.0(1)M
|
This command was removed.
|
Usage Guidelines
Use the show ip dvmrp route EXEC command to show the contents of the DVMRP routing table.
Examples
The following example shows output of the show ip dvmrp route command:
Router# show ip dvmrp route
DVMRP Routing Table - 1 entry
172.16.0.0/16 [100/11] uptime 07:55:50, expires 00:02:52
Table 4 describes the significant fields shown in the display.
Table 4 show ip dvmrp route Field Descriptions
Field
|
Description
|
1 entry
|
Number of entries in the DMVRP routing table.
|
172.16.0.0/16
|
Source network.
|
[100/11]
|
Administrative distance/metric.
|
uptime
|
How long (in hours, minutes, and seconds) that the route has been in the DVMRP routing table.
|
expires
|
How long (in hours, minutes, and seconds) until the entry is removed from the DVMRP routing table.
|
via 192.168.0.0
|
Next hop router to the source network.
|
Tunnel3
|
Interface to the source network.
|
show ip igmp groups
To display the multicast groups with receivers that are directly connected to the router and that were learned through Internet Group Management Protocol (IGMP), use the show ip igmp groups command in user EXEC or privileged EXEC mode.
show ip igmp [vrf vrf-name] groups [group-name | group-address | interface-type
interface-number] [detail]
Syntax Description
vrf vrf-name
|
(Optional) Supports the multicast VPN routing and forwarding (VRF) instance and indicates the name assigned to the VRF.
|
group-name
|
(Optional) Name of the multicast group, as defined in the Domain Name System (DNS) hosts table.
|
group-address
|
(Optional) Address of the multicast group. This is a multicast IP address in four-part, dotted-decimal notation.
|
interface-type interface-number
|
(Optional) Interface type and Interface number.
|
detail
|
(Optional) Provides a detailed description of the sources known through IGMP Version 3 (IGMPv3), IGMPv3lite, or URL Rendezvous Directory (URD).
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
10.0
|
This command was introduced.
|
12.1(3)T
|
Fields were added to the output of this command to support the Source Specific Multicast (SSM) feature.
|
12.1(5)T
|
The detail keyword was added.
|
12.0(23)S
|
The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.3(2)T
|
A field was added to the output of this command to support the SSM mapping feature.
|
12.2(18)S
|
A field was added to the output of this command to support the SSM mapping feature.
|
12.2(18)SXE
|
Support for this command was introduced on the Supervisor Engine 720.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
Usage Guidelines
If you omit all optional arguments and keywords, the show ip igmp groups command displays by group address, interface type, and interface number all directly connected multicast groups.
Examples
The following is sample output from the show ip igmp groups command:
Router# show ip igmp groups
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter
239.255.255.254 Ethernet3/1 1w0d 00:02:19 172.21.200.159
224.0.1.40 Ethernet3/1 1w0d 00:02:15 172.21.200.1
224.0.1.40 Ethernet3/3 1w0d never 172.16.214.251
224.0.1.1 Ethernet3/1 1w0d 00:02:11 172.21.200.11
224.9.9.2 Ethernet3/1 1w0d 00:02:10 172.21.200.155
232.1.1.1 Ethernet3/1 5d21h stopped 172.21.200.206
The following is sample output from the show ip igmp groups command with the group-address argument and detail keyword:
Router# show ip igmp groups 192.168.1.1 detail
Last reporter: 10.0.119.133
Group source list: (C - Cisco Src Report, U - URD, R - Remote
S- Static, M - SSM Mapping)
Source Address Uptime v3 Exp CSR Exp Fwd Flags
172.16.214.1 01:58:28 stopped 00:02:31 Yes C
Table 5 describes the significant fields shown in the displays.
Table 5 show ip igmp groups Field Descriptions
Field
|
Description
|
Group Address
|
Address of the multicast group.
|
Interface
|
Interface through which the group is reachable.
|
Uptime
|
Time in weeks, days, hours, minutes, and seconds that this multicast group has been known.
|
Expires
|
Time in weeks, days, hours, minutes, and seconds until the entry expires. If an entry expires, then the entry (for a short period) shows "now" before it is removed.
"never" indicates that the entry will not time out, because a local receiver is on this router for this entry.
"stopped" indicates that timing out of this entry is not determined by this expire timer. If the router is in INCLUDE mode for a group, then the whole group entry times out after the last source entry has timed out (unless the mode is changed to EXCLUDE mode before it times out).
|
Last Reporter
|
Last host to report being a member of the multicast group. Both IGMP v3lite and URD require a v2-report.
|
Group mode:
|
Either INCLUDE or EXCLUDE. The group mode is based on the type of membership reports that are received on the interface for the group. In the output for the show ip igmp groups detail command, the EXCLUDE mode also shows the Expires: field for the group entry (not shown in the output).
|
CSR Grp Exp
|
Shown for multicast groups in the SSM range. It indicates the time (in hours, minutes, and seconds) since the last received group membership report was received. Cisco IOS software needs to use these reports for the operation of URD and IGMP v3lite, but they do not indicate group membership by themselves.
|
Group source list:
|
Details of which sources have been requested by the multicast group.
|
Source Address
|
IP address of the source.
|
Uptime
|
Time since the source state was created.
|
v3 Exp
|
Time in hours, minutes, and seconds until the membership for the source times out according to IGMP operations. "stopped" displays if no member uses IGMPv3 (but only IGMP v3lite or URD).
|
CSR Exp
|
Time in hours, minutes, and seconds until the membership for the source times out according to IGMP v3lite or URD reports. "stopped" displays if members use only IGMPv3.
|
Fwd
|
Status of whether the router is forwarding multicast traffic due to this entry.
|
Flags
|
Information about the entry. The Remote flag indicates that an IGMPv3 report has been received by this source. The C flag indicates that an IGMP v3lite or URD report was received by this source. The U flag indicates that a URD report was received for this source.
|
Related Commands
Command
|
Description
|
ip igmp query-interval
|
Configures the frequency at which the Cisco IOS software sends IGMP host query messages.
|
ip igmp ssm-map enable
|
Enables SSM mapping for groups in a configured SSM range.
|
show ip igmp ssm-mapping
|
Displays information about SSM mapping or displays the sources that SSM mapping uses for a particular group.
|
show ip igmp interface
To display multicast-related information about an interface, use the show ip igmp interface command in user EXEC or privileged EXEC mode.
show ip igmp [vrf vrf-name] interface [interface-type interface-number]
Syntax Description
vrf
|
(Optional) Supports the multicast VPN routing and forwarding (VRF) instance.
|
vrf-name
|
(Optional) Name assigned to the VRF.
|
interface-type
|
(Optional) Interface type.
|
interface-number
|
(Optional) Interface number.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
10.0
|
This command was introduced.
|
12.0(23)S
|
The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
If you omit the optional arguments, the show ip igmp interface command displays information about all interfaces.
This command also displays information about dynamically learned Distance Vector Multicast Routing Protocol (DVMRP) routers on the interface.
Examples
The following is sample output from the show ip igmp interface command:
Router# show ip igmp interface
Ethernet0 is up, line protocol is up
Internet address is 192.168.37.6, subnet mask is 255.255.255.0
IGMP is enabled on interface
IGMP query interval is 60 seconds
Inbound IGMP access group is not set
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 192.168.37.33
No multicast groups joined
Ethernet1 is up, line protocol is up
Internet address is 192.168.36.129, subnet mask is 255.255.255.0
IGMP is enabled on interface
IGMP query interval is 60 seconds
Inbound IGMP access group is not set
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 192.168.36.131
Multicast groups joined: 225.2.2.2 226.2.2.2
Tunnel0 is up, line protocol is up
Internet address is 10.1.37.2, subnet mask is 255.255.0.0
IGMP is enabled on interface
IGMP query interval is 60 seconds
Inbound IGMP access group is not set
Multicast routing is enabled on interface
Multicast TTL threshold is 0
No multicast groups joined
Table 6 describes the significant fields shown in the display.
Table 6 show ip igmp interface Field Descriptions
Field
|
Description
|
Ethernet0 is up, line protocol is up
|
Interface type, number, and status.
|
Internet address is..., subnet mask is...
|
Internet address of the interface and subnet mask being applied to the interface, as specified with the ip address command.
|
IGMP is enabled on interface
|
Indicates whether IGMP has been enabled on the interface with the ip pim command.
|
IGMP query interval is 60 seconds
|
Interval at which the Cisco IOS software sends Protocol Independent Multicast (PIM) router query messages, as specified with the ip igmp query-interval command.
|
Inbound IGMP access group is not set
|
Indicates whether an IGMP access group has been configured with the ip igmp access-group command.
|
Multicast routing is enabled on interface
|
Indicates whether multicast routing has been enabled on the interface with the ip pim command.
|
Multicast TTL threshold is 0
|
Packet time-to-live threshold, as specified with the ip multicast ttl-threshold command.
|
Multicast designated router (DR) is...
|
IP address of the designated router for this LAN segment (subnet).
|
No multicast groups joined
|
Indicates whether this interface is a member of any multicast groups and, if so, lists the IP addresses of the groups.
|
Related Commands
Command
|
Description
|
ip address
|
Sets a primary or secondary IP address for an interface.
|
ip igmp access-group
|
Controls the multicast groups that hosts on the subnet serviced by an interface can join.
|
ip igmp query-interval
|
Configures the frequency at which the Cisco IOS software sends IGMP host query messages.
|
ip multicast ttl-threshold
|
Configures the TTL threshold of packets being forwarded out an interface.
|
ip pim
|
Enables PIM on an interface.
|
show ip igmp membership
To display Internet Group Management Protocol (IGMP) membership information for multicast groups and (S, G) channels, use the show ip igmp membership command in user EXEC or privileged EXEC mode.
show ip igmp membership [group-address | group-name] [tracked] [all]
Syntax Description
group-address
|
(Optional) The IP address of the multicast group for which to display IGMP membership information.
|
group-name
|
(Optional) The name of the multicast group, as defined in the Domain Name System (DNS) hosts table, for which to display IGMP membership information.
|
tracked
|
(Optional) Displays the multicast groups with the explicit tracking feature enabled.
|
all
|
(Optional) Displays the detailed information about the multicast groups with and without the explicit tracking feature enabled.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(19)S
|
This command was introduced.
|
12.2(8)T
|
This command was integrated into Cisco IOS Release 12.2(8)T.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
Use this command to display IGMP membership information for multicast groups and (S, G) channels. This command allows you to display detailed information about multicast group and channel membership and explicit tracking.
Examples
The following is sample output from the show ip igmp membership user EXEC command. Each entry in the output shows the aggregate membership information (indicated by the A flag) for a particular multicast group or channel from the IGMP cache. If the entry is prepended with a forward slash ("/") flag, the entry is a filtering entry that is blocking the data forwarding of the multicast group or channel.
Router> show ip igmp membership
Flags:A - aggregate, T - tracked
L - Local, S - static, V - virtual, R - Reported through v3
I - v3lite, D - Urd, M - SSM (S,G) channel
1,2,3 - The version of IGMP, the group is in
/ - Filtering entry (Exclude mode (S,G), Include mode (*,G))
<ip-address> - last reporter if group is not explicitly tracked
<n>/<m> - <n> reporter in include mode,<m> reporter in exclude
Channel/Group Reporter Uptime Exp. Flags Interface
*,224.0.1.40 10.10.0.1 00:01:34 02:41 2LA Et2/0
*,239.1.1.1 2/0 00:00:10 stop 3AT Et2/0
The following is sample output from the show ip igmp membership user EXEC command with the multicast group address 239.1.1.1 and the tracked keyword specified:
Router> show ip igmp membership 239.1.1.1 tracked
Flags:A - aggregate, T - tracked
L - Local, S - static, V - virtual, R - Reported through v3
I - v3lite, D - Urd, M - SSM (S,G) channel
1,2,3 - The version of IGMP, the group is in
/ - Filtering entry (Exclude mode (S,G), Include mode (*,G))
<ip-address> - last reporter if group is not explicitly tracked
<n>/<m> - <n> reporter in include mode,<m> reporter in exclude
Channel/Group Reporter Uptime Exp. Flags Interface
*,239.1.1.1 2/0 00:00:11 stop 3AT Et2/0
10.30.0.100,239.1.1.1 10.10.0.10 00:00:11 02:48 RT Et2/0
10.30.0.101,239.1.1.1 10.10.0.20 00:00:03 02:56 RT Et2/0
10.30.0.101,239.1.1.1 10.10.0.10 00:00:11 02:48 RT Et2/0
10.30.0.102,239.1.1.1 10.10.0.20 00:00:03 02:56 RT Et2/0
Table 7 describes the significant fields shown in the displays.
Table 7 show ip igmp membership Field Descriptions
Field
|
Description
|
Channel/Group
|
(S, G) channel or multicast group filtering entry.
|
Reporter
|
Displays information about the hosts reporting membership with the (S, G) channel or multicast group entry.
|
Uptime
|
The Uptime timer is how long (in hours, minutes, and seconds) the entry has been known.
|
Exp.
|
The Exp. timer is how long (in minutes and seconds) until the entry expires.
|
Flags
|
Provides information about the entry:
•A—aggregate. Indicates that the aggregate information for the (S, G) channel or multicast group is being displayed.
•T—tracked—Indicates that the multicast group is configured with the explicit tracking feature.
•L—local. Indicates that the router itself is interested in receiving the traffic for this multicast group or channel. In order for the application to receive this traffic, the packets are sent to the process level of the router. When the ip igmp join-group command is configured for a multicast group, the L flag is set.
•S—static. Indicates that the multicast group or channel is forwarded on the interface. When the ip igmp static-group command is configured on the interface, the S flag is set.
•V—virtual. Indicates that service such as Hoot and Holler is running on the router requesting the traffic for the multicast group or channel. These services can process IP multicast traffic in the fast switching path. The L flag will not be set by these applications.
|
| |
•R—reported through v3. Indicates that an IGMP Version 3 (IGMPv3) report was received for this entry.
•I—v3lite. Indicates that an IGMP Version 3 lite (IGMP v3lite) report was received for this entry.
•D—URD. Indicates that a URL Rendezvous Directory (URD) report was received for this entry.
•M—SSM (S, G) channel. Indicates that the multicast group address is in the Source Specific Multicast (SSM) range.
•1, 2, 3—The version of IGMP. The version of IGMP that the multicast group is running.
|
Interface
|
Interface type and number.
|
Related Commands
Command
|
Description
|
ip igmp explicit-tracking
|
Enables explicit tracking of hosts, groups, and channels for IGMP Version 3.
|
ip igmp version
|
Configures the version of IGMP that the router uses.
|
show ip igmp groups
|
Displays the multicast groups with receivers that are directly connected to the router and that were learned through IGMP.
|
show ip igmp snooping
To display the Internet Group Management Protocol (IGMP) snooping configuration of a device, use the show ip igmp snooping command in user EXEC or privileged EXEC mode.
show ip igmp snooping [groups [count | vlan vlan-id [ip-address | count]] | mrouter [vlan
vlan-id] querier | vlan vlan-id]
Syntax Description
groups
|
(Optional) Displays group information.
|
count
|
(Optional) Displays the number of multicast groups learned by IGMP snooping.
|
vlan vlan-id
|
(Optional) Specifies a VLAN. Valid values are 1 to 1001. If this keyword is not configured, information is displayed for all VLANs.
|
ip-address
|
(Optional) Displays information about the specified group.
|
count
|
(Optional) Displays group count inside a VLAN.
|
mrouter
|
(Optional) Displays information about dynamically learned and manually configured multicast router ports.
|
querier
|
(Optional) Displays IGMP querier information.
|
vlan vlan-id
|
(Optional) Specifies a VLAN. Valid values are 1 to 1001. If this keyword is not configured, information is displayed for all VLANs.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(5.2)WC(1)
|
This command was introduced.
|
12.2(15)ZJ
|
This command was implemented on the following platforms: Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series routers.
|
12.3(4)T
|
This command was integrated into Cisco IOS Release 12.3(4)T on the following platforms: Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series routers.
|
12.4(4)XC
|
This command was integrated into Cisco IOS Release 12.4(4)XC on Cisco 870 series Integrated Services Routers (ISRs). The groups and querier keywords were added.
|
12.4(15)T
|
The groups and count keywords were added on the Cisco 87x and the Cisco 1800 series Integrated Services Routers (ISRs) and on EtherSwitch high-speed WAN interface cards (HWICs) and EtherSwitch network modules running on the Cisco 1841, 2800, and 3800 series ISRs.
|
Usage Guidelines
You can also use the show mac-address-table multicast command to display entries in the MAC address table for a VLAN that has IGMP snooping enabled.
Examples
The following is sample output from the show ip igmp snooping command:
Router# show ip igmp snooping
Global IGMP Snooping configuration:
-----------------------------------
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last Member Query Interval : 1000
IGMPv2 immediate leave : Enabled
Explicit host tracking : Enabled
Multicast router learning mode : pim-dvmrp
Last Member Query Interval : 1000
CGMP interoperability mode : IGMP_ONLY
IGMPv2 immediate leave : Disabled
Explicit host tracking : Enabled
Multicast router learning mode : pim-dvmrp
Last Member Query Interval : 1000
CGMP interoperability mode : IGMP_ONLY
The information in the output display is self-explanatory.
The following is sample output from the show ip igmp snooping command using the vlan keyword:
Router# show ip igmp snooping vlan 1
IGMP snooping is globally enabled
IGMP snooping is enabled on this Vlan
IGMP snooping immediate-leave is enabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
The information in the output display is self-explanatory.
The following is sample output from the show ip igmp snooping command using the mrouter keyword:
Note In this example, Fa0/3 is a dynamically learned router port, and Fa0/2 is a configured static router port.
Router# show ip igmp snooping mrouter vlan 1
1 Fa0/2(static), Fa0/3(dynamic)
The information in the output display is self-explanatory.
The following is sample output from the show ip igmp snooping command using the groups keyword:
Router #show ip igmp snooping groups
Vlan Group Version Port List
---------------------------------------------------------
11 192.168.1.2 v2 Fa0/1/1
The information in the output display is self-explanatory.
The following is sample output from the show ip igmp snooping groups command with the count keyword specified:
Router# show ip igmp snooping groups count
Total number of groups: 2
The information in the output is self-explanatory.
Related Commands
Command
|
Description
|
ip igmp snooping
|
Globally enables IGMP snooping. IGMP snooping must be globally enabled in order to be enabled on a VLAN.
|
ip igmp snooping vlan
|
Enables IGMP snooping on the VLAN interface.
|
ip igmp snooping vlan immediate-leave
|
Enables IGMP Immediate-Leave processing.
|
ip igmp snooping vlan mrouter
|
Configures a Layer 2 port as a multicast router port.
|
show mac-address-table multicast
|
Displays the Layer 2 multicast entries for a VLAN.
|
show ip igmp snooping explicit-tracking
To display the information about the explicit host-tracking status for IGMPv3 hosts, use the show ip igmp snooping explicit-tracking command in user EXEC or privileged EXEC mode.
show ip igmp snooping explicit-tracking vlan vlan-id
Syntax Description
vlan vlan-id
|
Specifies the VLAN to display.
|
Defaults
If you do not specify a VLAN, information for VLAN 1 is displayed.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.2(14)SX
|
Support for this command was introduced on the Supervisor Engine 720.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
This command is not supported on Cisco 7600 series routers that are configured with a Supervisor Engine 2.
Examples
:This example shows how to display the information about the explicit host-tracking status for all IGMPv2 and IGMPv3 hosts:
Router# show ip igmp snooping explicit-tracking
Current number of entries: 3 Configured DB size limit: 32000
Source/Group Interface Reporter Filter_mode
---------------------------------------------------------------------------
Source/Group Interface Reporter Filter_mode
---------------------------------------------------------------------------
Source/Group Interface Reporter Filter_mode
---------------------------------------------------------------------------
Source/Group Interface Reporter Filter_mode
---------------------------------------------------------------------------
Source/Group Interface Reporter Filter_mode
---------------------------------------------------------------------------
0.0.0.0/224.0.1.40 Vl10: 11.10.0.2 EXCLUDE
:This example shows how to display the information about the explicit host-tracking status for IGMPv2 and IGMPv3 hosts:
Router# show ip igmp snooping explicit-tracking vlan 25
Source/Group Interface Reporter Filter_mode
------------------------------------------------------------------------
10.1.1.1/226.2.2.2 Vl25:1/2 10.27.2.3 INCLUDE
10.2.2.2/226.2.2.2 Vl25:1/2 10.27.2.3 INCLUDE
Related Commands
Command
|
Description
|
ip igmp snooping explicit-tracking
|
Enables explicit host tracking.
|
show ip igmp snooping filter
To display the Internet Group Management Protocol (IGMP) filtering rules, use the show ip igmp snooping filter command in privileged EXEC mode.
show ip igmp snooping filter interface type mod/port [statistics]
Syntax Description
interface type
|
Interface type; possible valid values are fastethernet, gigabitethernet, tengigabitethernet, port-channel num, and vlan vlan-id.
|
mod/port
|
Module and port number
|
statistics
|
(Optional) Displays IGMP filtering statistics.
|
Command Default
This command has no default settings.
Command Modes
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.2(33)SXH
|
This command was introduced.
|
Usage Guidelines
IGMP filtering allows you to configure filters on a per-port basis, a per-switch virtual interface (SVI) basis, or both.
The mod/port is not supported when you enter the vlan vlan-id keyword and argument.
IGMP filtering is supported for IPv4 only.
IGMP filters is not supported on routed ports.
If the port is in the shutdown state, the system cannot determine if the port is in trunk mode or access mode, and you will not be able to display the filter status by entering the show ip igmp snooping filter command. In this case, you can enter the show running-config interface command to display the configuration.
IGMP filtering statistics are maintained for the following only:
•A specific switch port in an SVI.
•A specific VLAN in a trunk.
Examples
The following example displays the default filters configured on the SVI:
Router# show ip igmp snooping filter interface vlan 20
Access-Group: Channel1-Acl
Groups/Channels Limit: 100 (Exception List: Channel6-Acl)
IGMP Minimum-Version: Not Configured
The following example displays the output on a switch port that is in access mode:
Router# show ip igmp snooping filter interface gigabitethernet3/48
Access-Group: Channel4-Acl
Groups/Channels Limit: 10 (Exception List: Channel3-Acl)
The following example displays the filters configured for all switch ports in access mode under this SVI:
Router# show ip igmp snooping filter interface vlan 20 detail
Access-Group: Not Configured
Groups/Channels Limit: Not Configured
Access-Group: Channel4-ACL
Groups/Channels Limit: 10 (Exception-list: Channel3-Acl)
The following example displays the default trunk port filters:
Router# show ip igmp snooping filter interface gigabitethernet3/46
Access-Group: Channel1-Acl
Groups/Channels Limit: 10 (Exception List: Channel3-Acl)
The following example displays the per-VLAN filters for all VLANs on this trunk:
Router# show ip igmp snooping filter interface gigabitethernet3/46 detail
Access-Group: Not Configured
Groups/Channels Limit: Not Configured
Access-Group: Not Configured
Groups/Channels Limit: 8 (Exception List: Channel4-Acl)
The following example displays the output on a trunk port for a specific VLAN:
Router# show ip igmp snooping filter interface gigabitethernet3/46 vlan 20
Access-Group: Not Configured
Groups/Channels Limit: 8 (Exception List: Channel4-Acl)
The following example displays the statistics for each switch port in access mode under the SVI:
Router# show ip igmp snooping filter interface vlan 20 statistics
IGMP Filters are not configured
Limit status : 0 active out of 2 max
Minimum-version denied : 0
Table 8 describes the significant fields shown in the displays.
Table 8 show ip igmp snooping Field Descriptions
Field
|
Description
|
Access-Group: Channel1-Acl
|
Name of the access group.
|
Groups/Channels Limit: 100 (Exception List: Channel6-Acl)
|
Number of IGMP groups or channels allowed on an interface is set to 100, with the exception of group Channel1-Acl.
|
IGMP Minimum-Version: Not Configured
|
Minimum version not configured (ip igmp snooping minimum-version command).
|
IGMP Filters are not configured
|
Filtering on the IGMP protocol is disabled.
|
Access-group denied : 0
|
Number of access groups denied.
|
Limit denied : 2
|
|
Limit status : 0 active out of 2 max
|
Number of active groups.
|
Minimum-version denied : 0
|
|
Related Commands
Command
|
Description
|
ip igmp snooping access-group
|
Configures an IGMP group access group.
|
ip igmp snooping limit
|
Limits the number of IGMP groups or channels allowed on an interface.
|
ip igmp snooping minimum-version
|
Filters on the IGMP protocol.
|
show ip igmp snooping mrouter
Note The documentation for this command has been integrated into the documentation for the show ip igmp snooping command. Please see the show ip igmp snooping command for complete and up-to-date information about displaying information for dynamically learned and manually configured multicast router ports.
To display information on dynamically learned and manually configured multicast router ports, use the show ip igmp snooping mrouter command in privileged EXEC mode.
show ip igmp snooping mrouter [vlan vlan-id]
Syntax Description
vlan vlan-id
|
(Optional) Specifies a VLAN. Valid values are 1 to 1001.
|
Command Modes
Privileged EXEC
Command History
Release
|
Modification
|
12.0(5.2)WC(1)
|
This command was introduced.
|
12.2(15)ZJ
|
This command was implemented on the following platforms: Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series routers.
|
12.3(4)T
|
This command was integrated into Cisco IOS Release 12.3(4)T on the following platforms: Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series routers.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
You can also use the show mac-address-table multicast command to display entries in the MAC address table for a VLAN that has Internet Group Management Protocol (IGMP) snooping enabled.
Examples
The following is sample output from the show ip igmp snooping mrouter vlan 1 command:
Note In this example, Fa0/3 is a dynamically learned router port, and Fa0/2 is a configured static router port.
Router# show ip igmp snooping mrouter vlan 1
1 Fa0/2(static), Fa0/3(dynamic)
Related Commands
Command
|
Description
|
ip igmp snooping
|
Globally enables IGMP snooping. IGMP snooping must be globally enabled in order to be enabled on a VLAN.
|
ip igmp snooping vlan
|
Enables IGMP snooping on the VLAN interface.
|
ip igmp snooping vlan immediate-leave
|
Enables IGMP Immediate-Leave processing.
|
ip igmp snooping vlan mrouter
|
Configures a Layer 2 port as a multicast router port.
|
show mac-address-table multicast
|
Displays the Layer 2 multicast entries for a VLAN.
|
show ip igmp snooping rate-limit
To display the information about the IGMP-snooping rate limit, use the show ip igmp snooping rate-limit command in user EXEC or privileged EXEC mode.
show ip igmp snooping rate-limit [statistics | vlan vlan-id]
Syntax Description
statistics
|
(Optional) Displays IGMP-snooping statistics.
|
vlan vlan-id
|
(Optional) Specifies a VLAN; valid values are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.2(17a)SX
|
Support for this command was introduced on the Supervisor Engine 720.
|
Usage Guidelines
This command is not supported on Cisco 7600 series routers that are configured with a Supervisor Engine 2.
Examples
This example shows how to display the statistics for IGMP-snooping rate limiting:
Router# show ip igmp snooping rate-limit statistics
Max IGMP messages incoming rate : Not configured
Vlan Incoming rate Rate-limiting ON Disable count Time to Enable
-----+---------------+----------------+---------------+---------------+
This example shows how to display IGMP-snooping rate-limit information for a specific VLAN:
Router# show ip igmp snooping rate-limit vlan 19
Max IGMP messages incoming rate : 200 pps
Vlan Incoming IGMP rate (in pps)
--------+---------------------------------
Related Commands
Command
|
Description
|
ip igmp snooping rate
|
Sets the rate limit for IGMP-snooping packets.
|
show ip igmp snooping statistics
To display IGMPv3 statistics, use the show ip igmp snooping statistics command in user EXEC or privileged EXEC mode.
show ip igmp snooping statistics [interface type [number]} | port-channel number | vlan vlan-id]
Syntax Description
interface type
|
(Optional) Displays IGMP statistics for the specified interface type; possible valid values are ethernet, fastethernet, and gigabitethernet.
|
number
|
(Optional) Multicast-related statistics for the specified module and port; see the "Usage Guidelines" section for valid values.
|
port-channel number
|
(Optional) Displays multicast-related statistics for the specified port-channel; valid values are from 1 to 282.
|
vlan vlan-id
|
(Optional) Displays multicast-related statistics for the specified VLAN; valid values for vlan-id are from 1 to 4094.
|
Defaults
This command has no default settings.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.2(14)SX
|
Support for this command was introduced on the Supervisor Engine 720.
|
Usage Guidelines
This command is not supported on Cisco 7600 series routers that are configured with a Supervisor Engine 2.
The show ip igmp snooping statistics command displays the following statistics:
•List of ports that are members of a group
•Filter mode
•Reporter-address behind the port
•Additional information (such as the last-join and last-leave collected since the previous time that a clear ip igmp snooping statistics command was issued)
The number argument designates the module and port number. Valid values for number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.
The port-channel number values from 257 to 282 are supported on the CSM and the FWSM only.
The #hosts behind the VLAN is displayed only if you define the max-hosts policy on the specified VLAN and enable the log policy for the specified VLAN.
Examples
This example shows how to display IGMPv3 statistics:
Router# show ip igmp snooping statistics interface FastEthernet5/1
Service-policy: Policy1policy tied with this interface
Query Rx: 2901 GS Query Rx: 0 V3 Query Tot Rx: 0
Join Rx: 8686 Leave Rx: 0 V3 Report Rx: 2300
Join Rx from router ports: 8684 Leave Rx from router ports: 0
Channel/Group Interface Reporter Uptime Last-Join Last-Leave
10.7.20.1,239.1.1.1 F5/1 10.5.20.1 00:12:00 1:10:00 -
10.7.30.1,239.1.1.1 F5/1 10.5.30.1 00:50:10 1:10:02 0:30:02
10.7.40.1,239.1.1.1 F5/1 10.5.40.1 00:10:10 1:10:03 -
Table 9 describes the fields that are shown in the example.
Table 9 show ip igmp snooping statistics Field Descriptions
Field
|
Description
|
Service-policy: Policy1
|
Policy tied to this interface.
|
#Channels: 3
|
Number of channels behind the specified interface.
|
#hosts
|
Number of hosts behind the specified interface. This field is displayed only if max-hosts policy is used.
|
Related Commands
Command
|
Description
|
clear ip igmp snooping statistics
|
Clears the IGMP-snooping statistics.
|
show ip igmp ssm-mapping
To display information about Source Specific Multicast (SSM) mapping or to display the sources that SSM mapping uses for a particular group, use the show ip igmp ssm-mapping command in user EXEC or privileged EXEC mode.
show ip igmp [vrf vrf-name] ssm-mapping [group-address]
Syntax Description
vrf
|
(Optional) Supports the multicast Virtual Private Network (VPN) routing and forwarding (VRF) instance.
|
vrf-name
|
(Optional) Name assigned to the VRF.
|
group-address
|
(Optional) Address of the group about which to display SSM mapping information.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.3(2)T
|
This command was introduced.
|
12.2(18)S
|
This command was integrated into Cisco IOS Release 12.2(18)S.
|
12.2(18) SXD3
|
This command was integrated into Cisco IOS Release 12.2(18)SXD3.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
Usage Guidelines
Use this command to display the sources that SSM mapping is using for a particular group, or would use for a group if SSM mapping were configured. If no SSM mapping is known for the specified group, and Domain Name System (DNS)-based SSM mapping is enabled, this command sends out a DNS query for the group. The DNS query initiates DNS-based SSM mapping for this group. If no SSM mapping group is specified by the group-address argument, this command displays the configured SSM mapping state.
Use the vrf vrf-name keyword and argument to displays SSM mapping information for a particular VRF.
Examples
The following example shows how to display information about the configured SSM mapping state:
Router# show ip igmp ssm-mapping
Mcast domain : ssm-map.cisco.com
Table 10 describes the significant fields shown in the display.
Table 10 show ip igmp ssm-mapping Field Descriptions
Field
|
Description
|
SSM Mapping : Enabled
|
The SSM Mapping feature is enabled.
|
DNS Lookup : Enabled
|
DNS-based SSM mapping is enabled.
|
Mcast domain : ssm-map.cisco.com
|
Multicast domain.
|
Name servers : 10.0.0.0
10.0.0.1
|
Addresses of the configured named servers.
|
The following example shows how to display information about the configured DNS-based SSM mapping:
Router# show ip igmp ssm-mapping 232.1.1.4
DNS name : 4.1.1.232.ssm-map.cisco.com
Table 11 describes the significant fields shown in the display.
Table 11 show ip igmp ssm-mapping Field Descriptions
Field
|
Description
|
Group address: 232.1.1.4
|
The router has mapped group 232.1.1.4.
|
Database : DNS
|
Group mapping is performed via DNS.
|
DNS name : 4.1.1.232.ssm-map.cisco.com
|
Name of the DNS that performs group mapping.
|
Expire time : 860000
|
Cache time of the DNS registration record on the DNS server, in milliseconds.
|
Source list : 172.16.8.5
:172.16.8.6
|
The group address is mapped via DNS to these source addresses.
|
The following example shows how to display information about the configured static SSM mapping:
Router# show ip igmp ssm-mapping 232.1.1.4
Table 12 describes the significant fields shown in the display.
Table 12 show ip igmp ssm-mapping Field Descriptions
Field
|
Description
|
Group address: 232.1.1.4
|
The address of the group with SSM mapping to the router.
|
Database : Static
|
Static SSM mapping is configured.
|
Source list : 172.16.8.5
: 172.16.8.6
|
Source addresses configured for static SSM mapping.
|
The following is sample output from the show ip igmp ssm-mapping command when no SSM mappings can be found:
Router# show ip igmp ssm-mapping 232.1.1.4
Can't resolve %i to source-mapping
Related Commands
Command
|
Description
|
ip igmp ssm-map enable
|
Enables SSM mapping for groups in a configured SSM range.
|
show ip igmp group
|
Displays the multicast groups with receivers that are directly connected to the router and that were learned through IGMP.
|
show ip igmp static-group class-map
To display the contents of Internet Group Management Protocol (IGMP) static group class map configurations and the interfaces using class maps, use the show ip igmp static-group class-map command in user EXEC or privileged EXEC mode.
show ip igmp static-group class-map [interface [type number]]
Syntax Description
interface
|
(Optional) Filters the output to display only the interfaces using class maps.
|
type number
|
(Optional) Interface type and number entered to filter the output to display only the class map attached to a particular interface.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.2(18)SXF5
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Cisco IOS XE Release 2.6
|
This command was integrated into Cisco IOS XE Release 2.6.
|
Usage Guidelines
Use this command to display the contents of IGMP static group class map configurations and the interfaces using class maps.
Use this command with the optional interface keyword to filter the output to display only the interfaces using class maps.
Use this command with the optional interface keyword and type number arguments to filter the output to display only the class map attached to a particular interface.
Examples
The following is sample output from the show ip igmp static-group class-map command. The output is self-explanatory:
Router# show ip igmp static-group class-map
Group address range 228.8.8.7 to 228.8.8.9
Group address 232.8.8.7, source address 10.1.1.10
Interfaces using the classmap:
Group address range 232.7.7.7 to 232.7.7.9, source address 10.1.1.10
Group address range 227.7.7.7 to 227.7.7.9
Group address 232.7.7.7, source address 10.1.1.10
Interfaces using the classmap:
The following is sample output from the show ip igmp static-group command with the interface keyword. The output is self-explanatory.
Router# show ip igmp static-group class-map interface
Class-map attached: static1
Class-map attached: static
The following is sample output from the show ip igmp static-group command with the interface keyword and type number arguments. The output is self-explanatory.
Router# show ip igmp static-group class-map interface Ethernet 3/1
Class-map attached: static
Related Commands
Command
|
Description
|
class-map type multicast-flows
|
Enters multicast-flows class-map configuration mode to create or modify IGMP static group class maps.
|
group (multicast-flows)
|
Defines the group entries to be associated with a IGMP static group class map.
|
ip igmp static-group
|
Configures static group membership entries on an interface.
|
show ip igmp udlr
To display unidirectional link routing (UDLR) information for directly connected multicast groups on interfaces that have a unidirectional link (UDL) helper address configured, use the show ip igmp udlr command in user EXEC or privileged EXEC mode.
show ip igmp udlr [group-name | group-address | interface-type interface-number]
Syntax Description
group-name | group-address
|
(Optional) Name or address of the multicast group for which to show UDLR information.
|
interface-type interface-number
|
(Optional) Interface type and number for which to show UDLR information.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.0(3)T
|
This command was introduced.
|
12.2(17d)SXB1
|
Support for this command was introduced on the Supervisor Engine 720.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
Usage Guidelines
This command displays which groups are being forwarded and received over the UDL.
On the upstream router, this command shows which interface is a UDL interface and which IP multicast groups are being forwarded out that interface. The UDL Reporter is the IP address of the downstream interface on the receiving router. If there is more than one downstream router, this field shows which downstream router forwarded the IGMP host report to the upstream router over the ground-based network. This report is forwarded over the UDL so that all downstream routers know which groups have already been requested by other downstream routers and additional IGMP host reports are suppressed.
On the downstream router, this command (in the Interface field) shows which local interface received an IGMP host report (from a directly connected host for a specific group). The UDL Reporter is the IP address of the router that had forwarded the IGMP host report to the upstream router over the ground-based network. The UDL Interfaces column shows the interface on which IP multicast packets are being received.
Examples
The following is sample output of the show ip igmp udlr command on an upstream router:
upstream-rtr# show ip igmp udlr
IGMP UDLR Status, UDL Interfaces: Serial0
Group Address Interface UDL Reporter Reporter Expires
224.2.127.254 Serial0 10.0.0.2 00:02:12
224.0.1.40 Serial0 10.0.0.2 00:02:11
225.7.7.7 Serial0 10.0.0.2 00:02:15
The following is sample output of the show ip igmp udlr command on a downstream router:
downstream-rtr# show ip igmp udlr
IGMP UDLR Status, UDL Interfaces: Serial0
Group Address Interface UDL Reporter Reporter Expires
224.2.127.254 Serial0 10.0.0.2 00:02:49
224.0.1.40 Serial0 10.0.0.2 00:02:48
225.7.7.7 Serial0 10.0.0.2 00:02:52
Table 13 describes the significant fields shown in the first display.
Table 13 show ip igmp udlr Field Descriptions
Field
|
Description
|
Group Address
|
All groups helpered by the UDL Reporter on the interface.
|
Interface
|
Interface type and number to which the group is connected.
|
UDL Reporter
|
IP address of the router on the UDL network that is IGMP helpering for the group.
|
Reporter Expires
|
How soon the UDL Reporter will become inactive, in hours:minutes:seconds. This can occur under the following conditions:
•The UDL Reporter has become nonoperational.
•The link or network to the reporter has become nonoperational.
•The group member attached to the UDL Reporter has left the group.
|
show ip mcache
Note Effective with Cisco IOS Release 12.2(33)SRE, the show ip mcache command is not available in Cisco IOS software.
To display the contents of the IP fast-switching cache, use the show ip mcache command in user EXEC or privileged EXEC mode.
show ip mcache [vrf vrf-name] [group-address | group-name] [source-address | source-name]
Syntax Description
vrf vrf-name
|
(Optional) Displays the contents of the IP fast-switching cache associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
group-address | group-name
|
(Optional) The address or name of the group for which to display the fast-switching cache. Can be either a Class D IP address or a Domain Name System (DNS) name.
|
source-address | source-name
|
(Optional) The specified source address or name for which to display a single multicast cache entry. Can be either a unicast IP address or a DNS name.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
11.0
|
This command was introduced.
|
12.0(23)S
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(18)SXE
|
This command was implemented on the Supervisor Engine 720 only.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
15.0(1)M
|
This command was removed.
|
12.2(33)SRE
|
This command was removed.
|
Examples
The following is sample output from the show ip mcache privileged EXEC command when multicast distributed switching (MDS) is in effect:
IP Multicast Fast-Switching Cache
(*, 239.2.3.4), Fddi3/0/0, Last used: mds
Tunnel3 MAC Header: 5000602F9C150000603E473F60AAAA030000000800 (Fddi3/0/0)
Tunnel0 MAC Header: 5000602F9C150000603E473F60AAAA030000000800 (Fddi3/0/0)
Tunnel1 MAC Header: 5000602F9C150000603E473F60AAAA030000000800 (Fddi3/0/0)
Table 14 describes the significant fields shown in the display.
Table 14 show ip mcache Field Descriptions
Field
|
Description
|
*
|
Source address or source wildcard (*).
|
239.2.3.4
|
Destination address.
|
Fddi
|
Incoming or expected interface on which the packet should be received.
|
Last used:
|
Latest time the entry was accessed for a packet that was successfully fast switched. The word "Semi-fast" indicates that the first part of the outgoing interface list is fast switched and the rest of the list is process level switched.
|
Tunnel0
MAC Header:
|
Outgoing interface list and respective MAC header that is used when rewriting the packet for output. If the interface is a tunnel, the MAC header will show the real next hop MAC header and then, in parentheses, the real interface name.
|
show ip mfib
To display the forwarding entries and interfaces in the IPv4 Multicast Forwarding Information Base (MFIB), use the show ip mfib command in user EXEC or privileged EXEC mode.
show ip mfib [vrf {vrf-name | *}] [all | linkscope | group-address/mask | group-address
[source-address] | source-address group-address] [verbose]
Syntax Description
vrf {vrf-name | *}
|
(Optional) Displays forwarding entries and interfaces in the IPv4 MFIB associated with Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instances.
After specifying the optional vrf keyword, you must specify either:
•vrf-name—Name of an MVRF. Displays forwarding entries and interfaces in the IPv4 MFIB associated with the MVRF specified for the vrf-name argument.
•*—Displays a summary of traffic statistics from the IPv4 MFIB for sources and groups associated with all tables (all MVRF tables and the global table).
|
all
|
(Optional) Displays forwarding entries and interfaces in the IPv4 MFIB for both linkscope (reserved) and non-linkscope (non-reserved) groups.
|
linkscope
|
(Optional) Displays forwarding entries and interfaces in the IPv4 MFIB for linkscope (reserved) groups.
|
group-address/mask
|
(Optional) Multicast group address followed by a forward slash (/) and group mask, in dotted decimal notation, which is referred to as a (*, G/mask) entry.
|
group-address
|
(Optional) Multicast group address.
|
source-address
|
(Optional) Multicast source address.
|
verbose
|
(Optional) Includes hardware-related IPv4 MFIB flags and Cisco Express Forwarding (CEF)-related adjacency information.
|
Command Default
If no optional keywords or arguments are entered, forwarding entries and interfaces in the IPv4 MFIB associated with nonlinkscope multicast groups are displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 2.1
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Usage Guidelines
Use the show ip mfib command to display IPv4 MFIB forwarding entries and interfaces.
A forwarding entry in the IPv4 MFIB has flags that determine the default forwarding and signaling behavior to use for packets matching the entry. The entry also has per-interface flags that further specify the forwarding behavior for packets received or forwarded on specific interfaces.
Note For a description of the significant MFIB and Multicast Routing Information Base (MRIB) forwarding entries and interface flags, see the "Multicast Forwarding Information Base Overview" module.
Examples
The following is sample output from the show ip mfib command:
Router# show ip mfib 232.1.1.1
(192.168.1.2,232.1.1.1) Flags:
SW Forwarding: 3786/10/28/2, Other: 0/0/0
The following is sample output from the show ip mfib command:
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
XO - Data Rate Above Threshold, K - Keepalive
I/O Item Flags: IC - Internal Copy, NP - Not platform switched,
NS - Negate Signalling, SP - Signal Present,
A - Accept, F - Forward, RA - MRIB Accept, RF - MRIB Forward
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
I/O Item Counts: FS Pkt Count/PS Pkt Count
(*,224.0.0.0/4) Flags: C HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
(*,224.0.1.40) Flags: C HW
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: 0/0/0
GigabitEthernet0/0/0 Flags: F IC NS
Table 15 describes the significant fields shown in the displays.
Table 15 show ip mfib Field Descriptions
Field
|
Description
|
SW Forwarding:
|
Statistics on the packets that are received from and forwarded out of at least one interface (packet count/packets per second/average packet size/kbits per second).
|
Other:
|
Statistics on received packets. These counters include statistics about the packets received and forwarded and packets received but not forwarded.
|
Pkts
|
Total number of packets received and forwarded since the creation of the multicast forwarding state to which this counter applies.
|
show ip mfib active
To display information from the IPv4 Multicast Forwarding Information Base (MFIB) about the rate at which active multicast sources are sending to multicast groups, use the show ip mfib active command in user EXEC or privileged EXEC mode.
show ip mfib [vrf {vrf-name | *}] [all | linkscope | group-address/mask | group-address
[source-address] | source-address group-address] active [kbps]
Syntax Description
vrf {vrf-name | *}
|
(Optional) Displays the rate at which active multicast sources are sending to multicast groups associated with Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instances.
After specifying the optional vrf keyword, you must specify either:
•vrf-name—Name of an MVRF. Displays the rate at which active multicast sources are sending to multicast groups associated with the MVRF specified for the vrf-name argument.
•*—Displays the rate at which active multicast sources are sending to multicast groups for all tables (all MVRF tables and the global table).
|
all
|
(Optional) Displays the rate at which active multicast sources are sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups.
|
linkscope
|
(Optional) Displays the rate at which active multicast sources are sending to linkscope (reserved) groups.
|
group-address/mask
|
(Optional) Multicast group address followed by a forward slash (/) and group mask, in dotted decimal notation, which is referred to as a (*, G/mask) entry.
|
group-address
|
(Optional) Multicast group address.
|
source-address
|
(Optional) Multicast source address.
|
kbps
|
(Optional) Kilobits per second (kbps).
|
Command Default
If no optional keywords or arguments are entered, all active sources sending to nonlinkscope multicast groups at a rate greater than or less than 4 kbps are displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 2.1
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Usage Guidelines
Use the show ip mfib active command to display active multicast streams forwarding at a rate greater than or equal to the value specified for the optional kbps argument. If no value is specified for the optional kbps argument, this command will display all active sources sending to nonlinkscope (nonreserved) multicast groups at a rate greater than or equal to 4 kbps.
Note In some cases, you may need to specify a sufficiently low value for the kbps argument to ensure that low data rate streams are displayed (multicast streams sending traffic at a rate less than 4 kbps).
Examples
The following sample output from the show ip mfib active command displays the active multicast sources that are sending traffic to nonlinkscope multicast groups at a rate greater than or equal to 1 kbps on a router participating in a multicast network.
Router# show ip mfib active 1
Active Multicast Sources - sending >= 1 kbps
SW Rate: 10 pps/2 kbps(1sec), 2 kbps(last 121 sec)
Table 16 describes the significant fields shown in the display.
Table 16 show ip mfib active Field Descriptions
Field
|
Description
|
Active Multicast Sources - sending >=
|
Active multicast sources sending traffic at a rate greater than or equal to the value specified after the equal (=) sign, in kbps.
|
Group:
|
Multicast group address.
|
Source:
|
Multicast source address.
|
SW Rate:
|
Rate at which active sources are sending traffic to multicast groups.
|
show ip mfib count
To display summary traffic statistics from the IPv4 Multicast Forwarding Information Base (MFIB) about multicast sources and groups, use the show ip mfib count command in user EXEC or privileged EXEC mode.
show ip mfib [vrf {vrf-name | *}] [all | linkscope | group-address/mask | group-address
[source-address] | source-address group-address] count
Syntax Description
vrf {vrf-name | *}
|
(Optional) Displays a summary of traffic statistics from the IPv4 MFIB about multicast sources and groups associated with Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instances.
After specifying the optional vrf keyword, you must specify either:
•vrf-name—Name of an MVRF. Displays a summary of traffic statistics from the IPv4 MFIB for sources and groups associated with the MVRF specified for the vrf-name argument.
•*—Displays a summary of traffic statistics from the IPv4 MFIB for sources and groups associated with all tables (all MVRF tables and the global table).
|
all
|
(Optional) Displays a summary of traffic statistics from the IPv4 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups.
|
linkscope
|
(Optional) Displays a summary of traffic statistics from the IPv4 MFIB about multicast sources sending to linkscope (reserved) groups.
|
group-address/mask
|
(Optional) Multicast group address followed by a forward slash (/) and group mask, in dotted decimal notation, referred to as a (*, G/mask) entry.
|
group-address
|
(Optional) Multicast group address.
|
source-address
|
(Optional) Multicast source address.
|
Command Default
If no optional keywords or arguments are entered, a summary of traffic statistics from the IPv4 MFIB about multicast sources sending traffic to nonreserved (nonlinkscope) multicast groups is displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 2.1
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Cisco IOS Release 15.1(1)S
|
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
|
Usage Guidelines
Use the show ip mfib count command to display a summary of traffic statistics from the IPv4 MFIB about multicast sources and groups, including number of packets, packets per second, average packet size, and kilobytes per second.
Examples
The following is sample output from the show ip mfib count command:
Router# show ip mfib count
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
11 routes, 6 (*,G)s, 3 (*,G/m)s
SW Forwarding: 0/0/0/0, Other: 0/0/0
SW Forwarding: 0/0/0/0, Other: 0/0/0
SW Forwarding: 0/0/0/0, Other: 0/0/0
SW Forwarding: 0/0/0/0, Other: 0/0/0
Totals - Source count: 1, Packet count: 0
SW Forwarding: 0/0/0/0, Other: 0/0/0
Totals - Source count: 1, Packet count: 25044
Groups: 3, 0.66 average sources per group
Table 17 describes the significant fields shown in the display.
Table 17 show ip mfib count Field Descriptions
Field
|
Description
|
Forwarding Counts
|
Statistics on the packets that are received and forwarded out an interface.
This section tracks the following statistics:
•Pkt Count/—Total number of packets received and forwarded since the multicast forwarding state to which this counter applies was created.
•Pkts per second/—Number of packets received and forwarded per second.
•Avg Pkt Size/ —Total number of bytes divided by the total number of packets for this multicast forwarding state. There is no direct display for the total number of bytes. You can calculate the total number of bytes by multiplying the average packet size by the packet count.
•Kilobits per second—Bytes per second divided by packets per second divided by 1000.
|
Other counts
|
Statistics on the received packets. These counters include statistics about the packets received and forwarded and packets received but not forwarded.
This section tracks the following statistics:
•Total/—Total number of packets received.
•RPF failed/—Number of packets not forwarded due to a failed Reverse Path Forwarding (RPF) or acceptance check (when bidirectional Protocol Independent Multicast (PIM) is configured).
•Other drops(OIF-null, rate-limit etc)—Number of packets not forwarded for reasons other than an RPF failure or acceptance check (such as the outgoing interface [OIF] list was empty or because the packets were discarded because of a configuration that was enabled).
|
Default
|
Summary information about all the routes and groups in the MFIB database.
This section tracks the following statistics:
•routes—Total number of routes in the MFIB database.
•(*,G)s—Total number of (*, G) entries in the MFIB database.
•(*,G/m)s—Total number of groups that have a specific mask in the MFIB database.
|
Group:
|
Summary information about counters for (*, G) and the range of (S, G) states for one particular group G. The following RP-tree: and Source: output fields contain information about the individual states belonging to this group.
Note For Source Specific Multicast (PIM-SSM) range groups, the Group: displays are statistical. All SSM range (S, G) states are individual, unrelated SSM channels.
|
RP-tree:
|
Counters for the (*, G) state of this group G. These counters are displayed only for groups that have a forwarding mode that do not forward packets on the shared tree. These (*, G) groups are bidirectional PIM and PIM sparse mode (PIM-SM) groups. There are no RP-tree displays for PIM SSM range groups.
|
SW Forwarding:
|
Statistics on the packets that are received from and forwarded to at least one interface.
|
Other:
|
Statistics on received packets. These counters include statistics about the packets received and forwarded and packets received but not forwarded.
|
Totals -
|
This section tracks the following statistics:
•Source count—Total number of multicast sources sending to multicast groups in the IPv4 MFIB.
•Packet count—Total number of packets received and forwarded. This count is cumulative for all sources in the source count.
|
Groups
|
The total number of unique groups in the MFIB database, and the average number of sources per group.
|
show ip mfib interface
To display IPv4 Multicast Forwarding Information Base (MFIB)-related information about interfaces and their forwarding status, use the show ip mfib interface command in user EXEC or privileged EXEC mode.
show ip mfib interface [control | data] [type number]
Syntax Description
control
|
(Optional) Displays interfaces in the IPv4 MFIB, and any associated control information.
|
data
|
(Optional) Displays IPv4 MFIB forwarding information about interfaces.
|
type number
|
(Optional) Interface type and number.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
15.0(1)M
|
This command was introduced.
|
Examples
The following is sample output from the show ip mfib interface command:
Router# show ip mfib interface
IPv4 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
Initialization State: MFIB Init Running
Total signalling packets queued: 0
Process Status: may enable - 3 - pid 202
Tables 1/1/0 (active/mrib/io)
MFIB interface status CEF-based output
Ethernet0/0 up [yes ,yes ]
Ethernet0/1 down [yes ,no ]
Ethernet0/2 down [yes ,no ]
Ethernet0/3 down [yes ,no ]
Ethernet1/0 up [yes ,yes ]
Ethernet1/1 down [yes ,no ]
Ethernet1/2 down [yes ,no ]
Ethernet1/3 down [yes ,no ]
Serial2/0 down [yes ,no ]
Serial2/1 down [yes ,no ]
Serial2/2 down [yes ,no ]
Serial2/3 down [yes ,no ]
Serial3/0 down [yes ,no ]
Serial3/1 down [yes ,no ]
Serial3/2 down [yes ,no ]
Serial3/3 down [yes ,no ]
Table 18 describes the significant fields shown in the display.
Table 18 show ip mfib interface Field Descriptions
Field
|
Description
|
IPv4 Multicast Forwarding (MFIB) status:
|
Displays the status of interfaces in the IPv4 MFIB.
|
Configuration Status
|
IPv4 MFIB configuration status on the interface.
|
Initialization State
|
Intialization state of the IPv4 MFIB.
|
MFIB interface
|
Lists available interfaces for which to display IPv4 MFIB status.
|
status
|
Status of the interface.
|
CEF-based output
|
Provides information about the status of Cisco Express Forwarding on the MFIB interface. This section tracks whether Cisco Express Forwarding has been configured and whether it is available on the interface.
|
The following is sample output from the show ip mfib interface control command:
Router# show ip mfib interface control
MFIB interface IP PIM Process CEF
Ethernet0/0 up on yes yes yes yes
Ethernet0/1 off off yes no yes no
Ethernet0/2 off off yes no yes no
Ethernet0/3 off off yes no yes no
Ethernet1/0 up on yes yes yes yes
Ethernet1/1 off off yes no yes no
Ethernet1/2 off off yes no yes no
Ethernet1/3 off off yes no yes no
Serial2/0 off off yes no yes no
Serial2/1 off off yes no yes no
Serial2/2 off off yes no yes no
Serial2/3 off off yes no yes no
Serial3/0 off off yes no yes no
Serial3/1 off off yes no yes no
Serial3/2 off off yes no yes no
Serial3/3 off off yes no yes no
Loopback0 up on yes yes yes yes
Tunnel0 up reg yes out yes out
Table 19 describes the significant fields shown in the display.
Table 19 show ip mfib interface control Field Descriptions
Field
|
Description
|
MFIB interface
|
Lists available interfaces for which to display IPv4 MFIB status.
|
IP
|
Displays the status of IP on the available interfaces.
|
PIM
|
Displays the status of PIM on the available interfaces.
|
Process
|
Displays the configuration and operational status of the IPv4 MFIB on the available interfaces.
|
CEF
|
Displays the configuration and operational status of CEF on the available interfaces.
|
The following is sample output from the show ip mfib interface data command:
Router# show ip mfib interface data
MFIB interface Type Process CEF
Ethernet0/0 None yes yes yes
Ethernet1/0 None yes yes yes
Loopback0 None yes yes yes
Table 20 describes the significant fields shown in the display.
Table 20 show ip mfib interface data Field Descriptions
Field
|
Description
|
MFIB interface
|
Lists available interfaces for which to display IPv4 MFIB forwarding status.
|
Type
|
Next hop type value (for example, IPv4, IPv6, LSM, LSM NBMA, MDTv4, MDTv6, None, v4Dec, and v6Dec).
|
Process
|
Displays the status of the IPv4 MFIB process.
|
CEF
|
Displays the status of Cisco Express Forwarding (whether it is active and available) for IPv4 MFIB interfaces.
|
show ip mfib route
To display the forwarding entries and interfaces in the IPv4 Multicast Forwarding Information Base (MFIB) without packet header information and forwarding counters, use the show ip mfib route command in user EXEC or privileged EXEC mode.
show ip mfib [vrf {vrf-name | *}] route [all | linkscope | group-address/mask | group-address
[source-address] | source-address group-address] [detail | internal]
Syntax Description
vrf {vrf-name | *}
|
(Optional) Displays the forwarding entries and interfaces in the IPv4 MFIB associated with Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instances.
After specifying the optional vrf keyword, you must specify either:
•vrf-name—Name of an MVRF. Displays the forwarding entries and interfaces in the IPv4 MFIB associated with the MVRF specified for the vrf-name argument.
•*—Displays the forwarding entries and interfaces in the IPv4 MFIB associated with all tables (all MVRF tables and the global table).
|
all
|
(Optional) Displays the forwarding entries and interfaces in the IPv4 MFIB for both linkscope (reserved) and nonlinkscope (nonreserved) groups.
|
linkscope
|
(Optional) Displays the forwarding entries and interfaces in the IPv4 MFIB for linkscope (reserved) groups.
|
group-address/mask
|
(Optional) Multicast group address followed by a forward slash (/) and group mask, in dotted decimal notation (referred to as a (*, G/mask) entry).
|
group-address
|
(Optional) Multicast group address.
|
source-address
|
(Optional) Multicast source address.
|
detail
|
(Optional) For use by Cisco technical support. Displays detailed information about the routes in the IPv4 MFIB.
|
internal
|
(Optional) For use by Cisco technical support. Displays the internal data structures for the routes in the IPv4 MFIB.
|
Command Default
If no optional keywords or arguments are entered, forwarding entries and interfaces in the IPv4 MFIB associated with nonlinkscope multicast groups are displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 2.1
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Usage Guidelines
Use the show ip mfib route command to display the forwarding entries and interfaces in the IPv4 MFIB. Unlike the show ip mfib command, the output from this command does not display packet header information and IPv4 MFIB packet and forwarding counters.
Note For a description of the significant MFIB and Multicast Routing Information Base (MRIB) forwarding entries and interface flags, see the "Multicast Forwarding Information Base (MFIB) Overview" module.
Examples
The following is sample output from the show ip mfib route command:
Router# show ip mfib route
GigabitEthernet1/0/0 F NS
GigabitEthernet1/0/0 A NS
GigabitEthernet1/0/0 F NS
GigabitEthernet1/0/0 F NS
Related Commands
Command
|
Description
|
show ip mfib
|
Displays the forwarding entries and interfaces in the IPv4 MFIB.
|
show ip mfib status
To display the general IPv4 Multicast Forwarding Information Base (MFIB) configuration and operational status, use the show ip mfib status command in user EXEC or privileged EXEC mode.
show ip mfib status
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 2.1
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Usage Guidelines
Use the show ip mfib status command to find such information as whether the IPv4 MFIB is enabled and running.
Examples
The following is sample output from the show ip mfib status command:
Router# show ip mfib status
IPv4 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
Initialization State: MFIB Init Running
Total signalling packets queued: 0
Process Status: may enable - 3 - pid 202
Tables 1/1/0 (active/mrib/io)
show ip mfib summary
To display summary information about the number of IPv4 Multicast Forwarding Information Base (MFIB) entries (including linkscope groups) and interfaces, use the show ip mfib summary command in user EXEC or privileged EXEC mode.
show ip mfib [vrf {vrf-name | *}] summary [detail | internal]
Syntax Description
vrf {vrf-name | *}
|
(Optional) Displays summary information about the number of IPv4 MFIB entries and interfaces associated with Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instances.
After specifying the optional vrf keyword, you must specify either:
•vrf-name—Name of an MVRF. Displays summary information about the number of IPv4 MFIB entries and interfaces associated with the MVRF specified for the vrf-name argument.
•*—Displays summary information about the number of IPv4 MFIB entries and interfaces associated with all tables (all MVRF tables and the global table).
|
detail
|
(Optional) For use by Cisco technical support. Displays more detailed information about the IPv4 MFIB entries and interfaces in the summary of the IPv4 MFIB.
|
internal
|
(Optional) For use by Cisco technical support. Displays internal data structures associated with IPv4 MFIB entries and interfaces in the summary of the IPv4 MFIB.
|
Command Default
If no optional keywords or arguments are entered, this command displays summary information about the number of IPv4 MFIB entries and interfaces from the global table.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 2.1
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
Usage Guidelines
The show ip mfib summary command shows the IPv4 multicast routing table in abbreviated form. The command displays only the number of IPv4 MFIB entries, the number of (*, G), (S, G), and (*, G/m) entries, and the number of IPv4 MFIB interfaces.
The show ip mfib summary command counts all entries, including linkscope entries.
Examples
The following is sample output from the show ip mfib summary command:
Router# show ip mfib summary
15 prefixes (15/0/0 fwd/non-fwd/deleted)
28 ioitems (28/0/0 fwd/non-fwd/deleted)
Forwarding prefixes: [3 (S,G), 9 (*,G), 3 (*,G/m)]
Table id 0x0, instance 0x4B23B54
Table 21 describes the significant fields shown in the display.
Table 21 show ip mfib summary Field Descriptions
Field
|
Description
|
15 prefixes (15/0/0 fwd/non-fwd/deleted)
|
Number of prefixes in the IPv4 MFIB and a summary of the status of the prefixes (forwarded/nonforwarded/deleted), including linkscope prefixes.
|
28 ioitems (28/0/0 fwd/non-fwd/deleted)
|
Number of interfaces in the IPv4 MFIB.
|
Forwarding prefixes: [3 (S,G), 9 (*,G), 3 (*,G/m)]
|
Total number of (S, G), (*, G), and (*, G/m) prefixes in the IPv4 MFIB.
|
show ip mpacket
Note Effective with Cisco IOS Release 15.0(1)M and Cisco IOS Release 12.2(33)SRE, the show ip mpacket is not available in Cisco IOS software.
To display the contents of the circular cache-header buffer, use the show ip mpacket command in privileged EXEC mode.
show ip mpacket [vrf vrf-name] [group-address | group-name] [source-address | source-name]
[quality] [detail] [read-only]
Syntax Description
vrf vrf-name
|
(Optional) Displays the contents of the circular cache-header buffer associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
group-address | group-name
|
(Optional) The specified group address or group name for which matching cache headers are displayed.
|
source-address | source-name
|
(Optional) The specified source address or source name for which matching cache headers are displayed.
|
quality
|
(Optional) Displays Real-Time Transport Protocol (RTP) data quality.
|
detail
|
(Optional) Displays summary information and displays the rest of the IP header fields on an additional line, plus the first 8 bytes after the IP header (usually the User Datagram Protocol [UDP] port numbers).
|
read-only
|
(Optional) Specifies that the circular buffer will not be cleared of the IP multicast packet headers.
|
Command Modes
Privileged EXEC (#)
Command History
Release
|
Modification
|
11.1
|
This command was introduced.
|
12.0(23)S
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(18)SXE
|
This command was implemented on the Supervisor Engine 720.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.4(24)T
|
This command was modified in a release earlier than Cisco IOS Release 12.4(24)T. The quality and read-only keywords were added.
|
15.0(1)M
|
This command was removed.
|
12.2(33)SRE
|
This command was removed.
|
Usage Guidelines
This command is applicable only when the ip multicast cache-headers command is in effect.
Each time this command is entered, a new buffer is allocated. The summary display (when the detail keyword is omitted) shows the IP packet identifier, time-to-live (TTL) value, source and destination IP addresses, and a local time stamp when the packet was received.
All the arguments and keywords can be used in the same command in any combination.
Examples
The following is sample output from the show ip mpacket command for the group named smallgroup:
Router# show ip mpacket smallgroup
IP Multicast Header Cache - entry count:6, next index: 7
Key: id/ttl timestamp (name) source group
D782/117 206416.908 (company1.example.com) 192.168.228.10 224.5.6.7
7302/113 206417.908 (example.edu) 172.16.2.17 224.5.6.7
6CB2/114 206417.412 (company2.example.com) 172.16.19.40 224.5.6.7
D782/117 206417.868 (company1.example.com) 192.168.228.10 224.5.6.7
E2E9/123 206418.488 (example.com) 239.1.8.10 224.5.6.7
1CA7/127 206418.544 (company4.example.com) 192.168.6.10 224.5.6.7
Table 22 describes the significant fields shown in the display.
Table 22 show ip mpacket Field Descriptions
Field
|
Description
|
entry count
|
Number of packets cached (one packet for each line in the display). The cache has lines numbered from 0 to 1024.
|
next index
|
The index for the next element in the cache.
|
id
|
Identification number of the IP packet.
|
ttl
|
Current TTL of the packet.
|
timestamp
|
Time-stamp sequence number of the packet.
|
(name)
|
Domain Name System (DNS) name of the source sending to the group. Name appears in parentheses.
|
source
|
IP address of the source sending to the group.
|
group
|
Multicast group address to which the packet is sent. In this example, the group address is the group name smallgroup.
|
Related Commands
Command
|
Description
|
ip multicast cache-headers
|
Allocates a circular buffer to store IP multicast packet headers that the router receives.
|
show ip mr proxy
To list the Reverse Path Forwarding (RPF) vector proxies received on a multicast router discovered by the Cisco IOS software, use the show ip mr proxy command in user EXEC or privileged EXEC mode.
show ip mr [group] proxy
Syntax Description
group
|
(Optional) Multicast routing group.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.0(30)S
|
This command was introduced.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
Use this command to determine if an RPF vector proxy is received on a core router.
Examples
The following is sample output from the show ip mr proxy command:
Proxy Assigner Origin Uptime/Expire
10.0.0.1 10.0.2.2 PIM 00:02:16/00:02:14
Table 23 describes the fields shown in the display.
Table 23 show ip mr proxy Field Descriptions
Field
|
Description
|
Proxy
|
Proxy value.
|
Assigner
|
IP address of the router assigning the proxy vector.
|
Origin
|
Protocol origin.
|
Uptime/Expires
|
Uptime shows how long (in hours:minutes:seconds) the entry has been in the table.
Expires shows how long (in hours:minutes:seconds or in milliseconds) until the entry will be removed from the IP multicast routing table.
|
Related Commands
Command
|
Description
|
show ip pim interface
|
Displays information about interfaces configured for PIM.
|
show ip pim neighbor
|
Displays information about PIM neighbors.
|
show ip mrib client
To display information about the clients of the IPv4 Multicast Routing Information Base (MRIB), use the show ip mrib client command in user EXEC or privileged EXEC mode.
show ip mrib [vrf vrf-name] client [filter] [name client-name [:connection-id]]
Syntax Description
vrf vrf-name
|
(Optional) Displays information about clients of the IPv4 MRIB associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
filter
|
(Optional) Displays information about the IPv4 MRIB flags each client owns and the flags each client is interested in.
|
name client-name
|
(Optional) Displays the name an IPv4 MRIB client.
Note The names of the MRIB clients that can be specified for the client-name argument can be found by entering the show ip mrib client command with no optional keywords or arguments.
|
:connection-id
|
(Optional) The connection ID associated with the IPv4 MRIB client. The colon is required.
Note The connection ID is typically the Process ID (PID) value associated with the MRIB client.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
15.0(1)M
|
This command was introduced.
|
Usage Guidelines
Use the show ip mrib client command to display information about the clients of the IPv4 MRIB. When this command is entered with the optional filter keyword, the output will display additional information, including the IPv4 MRIB flags each clients owns and the flags each client is interested in.
Note For a description of the significant MFIB and MRIB forwarding entries and interface flags, see the "Multicast Forwarding Information Base (MFIB) Overview" module.
Examples
The following is sample output from the show ip mrib client command:
Router# show ip mrib client
IP MRIB client-connections
MRIB Trans for MVRF #0 table:199 (connection id 1)
IPv4_mfib(0x5474934):7.196 (connection id 2)
The following is sample output from the show ip mrib client command with the filter and name keywords and client-name and :connection-id arguments:
Router# show ip mrib client filter name IPv4_mfib(0x5474934):7.196
IP MRIB client-connections
IPv4_mfib(0x5474934):7.196 (connection id 2)
entry attributes: S C IA K ET DDE
interface attributes: A DP F IC NS SP
show ip mrib route
To display the routes in the IPv4 Multicast Routing Information Base (MRIB) table, use the show ip mrib route command in user EXEC or privileged EXEC mode.
show ip mrib [vrf vrf-name] route [reserved | [source-address | *] [group-address[/mask]]]
Syntax Description
vrf vrf-name
|
(Optional) Displays routes in the IPv4 MRIB associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
reserved
|
(Optional) Displays routes in the IPv4 MRIB associated with linkscope groups.
|
source-address
|
(Optional) Multicast source address.
|
*
|
(Optional) Displays shared tree entries in the IPv4 MRIB.
|
group-address
|
(Optional) Multicast group address.
|
group-address/mask
|
(Optional) Multicast group address followed by a forward slash (/) and group mask, in dotted decimal notation, which is referred to as a (*, G/mask) entry.
|
Command Default
If this command is entered without the optional reserved keyword, the output displays only routes in the IPv4 MRIB associated with nonreserved (nonlinkscope) groups.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
15.0(1)M
|
This command was introduced.
|
Usage Guidelines
Use the show ip mrib route command to display the IPv4 MRIB table. All entries are created by various clients of the IPv4 MRIB, such as, Protocol Independent Multicast (PIM) and the IPv4 MFIB. The flags on each entry or interface act as a communication mechanism between the various clients of the IPv4 MRIB.
Note For a description of the significant MFIB and MRIB forwarding entries and interface flags, see the "Multicast Forwarding Information Base (MFIB) Overview" module.
Examples
The following is sample output from the show ip mrib route command:
Router# show ip mrib route
IP Multicast Routing Information Base
Entry flags: L - Domain-Local Source, E - External Source to the Domain,
C - Directly-Connected Check, S - Signal, IA - Inherit Accept, D - Drop
ET - Data Rate Exceeds Threshold,K - Keepalive,DDE - Data Driven Event
Interface flags: F - Forward, A - Accept, IC - Internal Copy,
NS - Negate Signal, DP - Don't Preserve, SP - Signal Present,
II - Internal Interest, ID - Internal Disinterest, LI - Local Interest,
LD - Local Disinterest, MD - mCAC Denied
(*,224.0.1.39) RPF nbr: 0.0.0.0 Flags: C
(*,224.0.1.40) RPF nbr: 0.0.0.0 Flags: C
(192.168.6.6,224.0.1.39) RPF nbr: 192.168.123.2 Flags:
(192.168.6.6,224.0.1.40) RPF nbr: 192.168.123.2 Flags:
show ip mrib route summary
To display the total number of routes and interfaces in the IPv4 Multicast Routing Information Base (MRIB), use the show ip mrib route summary command in user EXEC or privileged EXEC mode.
show ip mrib [vrf vrf-name] route summary
Syntax Description
vrf vrf-name
|
(Optional) Displays the total number of routes and interfaces in the IPv4 MRIB associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
15.0(1)M
|
This command was introduced.
|
Usage Guidelines
Use the show ip mrib summary command to display the total number of routes and interfaces in the IPv4 Multicast Routing Information Base (MRIB).
Note The total number of routes and interfaces displayed in the output includes routes and interfaces associated with both reserved (linkscope) and nonreserved multicast groups.
Examples
The following is sample out from the show ip mrib summary command:
Router# show ip mrib summary
No. of Route x Interfaces (RxI) = 25
show ip mrm interface
To display Multicast Routing Monitor (MRM) information related to interfaces, use the show ip mrm interface command in user EXEC or privileged EXEC mode.
show ip mrm interface [type number]
Syntax Description
type number
|
(Optional) Interface type and number for which to display MRM interface information.
|
Command Default
If no interface is specified for the type and number arguments, information about all interfaces participating in MRM is displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(5)S
|
This command was introduced.
|
12.0(5)T
|
This command was integrated into Cisco IOS Release 12.0(5)T.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
Use this command to display which interfaces are participating in MRM, in which roles, and whether the interfaces are up or down.
Examples
The following is sample output from the show ip mrm interface command:
Router# show ip mrm interface
Interface Address Mode Status
Ethernet0 10.0.0.1 Test-Sender Up
Ethernet1 10.0.0.10 Test-Receiver Up
Table 24 describes the fields shown in the display.
Table 24 show ip mrm interface Field Descriptions
Field
|
Description
|
Interface
|
List of interfaces on this router that serve as a Test Sender or Test Receiver.
|
Address
|
IP address of the interface.
|
Mode
|
Role that the interface plays in MRM, either Test Sender or Test Receiver.
|
Status
|
Status of the interface.
|
Related Commands
Command
|
Description
|
ip mrm
|
Configures an interface to operate as a Test Sender or Test Receiver, or both, for MRM.
|
show ip mrm manager
To display information about a Multicast Routing Monitor (MRM) test, use the show ip mrm manager command in user EXEC or privileged EXEC mode.
show ip mrm manager [test-name]
Syntax Description
test-name
|
(Optional) Name of the MRM test for which to display information.
|
Command Default
If no test name is specified for the test-name argument, information about all Managers is displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(5)S
|
This command was introduced.
|
12.0(5)T
|
This command was integrated into Cisco IOS Release 12.0(5)T.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
Use this command to display status information and the parameters configured for an MRM test.
Examples
The following is sample output from the show ip mrm manager command executed at two different times:
Router# show ip mrm manager test
Manager:test/10.0.0.0 is running, expire:1d00h
Beacon interval/holdtime/ttl:60/86400/32
Group:239.1.2.3, UDP port test-packet/status-report:16384/65535
Router# show ip mrm manager test
Manager:test/10.0.0.0 is not running
Beacon interval/holdtime/ttl:60/86400/32
Group:239.1.2.3, UDP port test-packet/status-report:16384/65535
Table 25 describes the fields shown in the display.
Table 25 show ip mrm manager Field Descriptions
Field
|
Description
|
Manager
|
Status of the test.
|
Beacon interval/holdtime/ttl
|
The interval at which beacon messages are sent (Beacon interval), the duration of the test period (holdtime), and the time-to-live value of beacon messages.
Note Beacon parameters are controlled with the beacon command. By default, beacon messages are sent at an interval of 60 seconds; the duration of the test period is 86400 seconds (1 day); and the time-to-live of beacon messages is 32 hops.
|
Group
|
IP multicast group that the Test Receiver will listen to, as configured by the manager command.
|
UDP port test-packet/status-report
|
User Datagram Protocol (UDP) port number to which test packets are sent by a Test Sender and status reports are sent by a Test Receiver.
Note The UDP port numbers to which test packets are sent by a Test Sender and status reports are sent by a Test Receiver are controlled with the udp-port command. By default, the Test Sender uses UDP port number 16834 to send test packets, and the Test Receiver uses UDP port number 65535 to send status reports.
|
Test senders
|
IP address of Test Senders.
|
Test receivers
|
IP address of Test Receivers.
|
Related Commands
Command
|
Description
|
beacon
|
Changes the frequency, duration, or scope of beacon messages that the Manager sends to the Test Sender and Test Receiver.
|
ip mrm manager
|
Specifies the name of an MRM test to be created or modified, and enters MRM manager configuration mode.
|
manager
|
Specifies that an interface is the Manager for MRM, and specifies the multicast group address the Test Receiver will listen to.
|
udp-port
|
Changes the UDP port numbers to which the Test Sender sends test packets or the Test Receiver sends status reports.
|
show ip mrm status-report
To display the status reports in the Multicast Routing Monitor (MRM) status report cache, use the show ip mrm status-report command in user EXEC or privileged EXEC mode.
show ip mrm status-report [ip-address]
Syntax Description
ip-address
|
(Optional) IP address of a Test Receiver for which to display status reports.
|
Command Default
If no IP address is specified for the optional ip-address argument, all status reports in the MRM status report cache are displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(5)S
|
This command was introduced.
|
12.0(5)T
|
This command was integrated into Cisco IOS Release 12.0(5)T.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
Use the show ip mrm status-report command during your MRM test period to learn if any errors are reported. The Manager immediately displays error reports and sends error reports, if any, to the circular status report cache. The cache holds up to 1024 lines, with one line for each error report.
No errors reported indicates that the Test Receiver is receiving test packets without loss or duplicates from the Test Sender.
Use the show ip mrm status-report command with the optional ip-address argument to restrict the output to display only status reports sent by the Test Receiver at the specified IP address. If no IP address is specified for the optional ip-address argument, all status reports in the MRM status report cache are displayed.
Use the clear ip mrm status-report command to clear the MRM status report cache.
Examples
The following is sample output from the show ip mrm status-report command:
Router# show ip mrm status-report
IP MRM status report cache:
Timestamp Manager Test Receiver Pkt Loss/Dup (%) Ehsr
*Apr 20 07:36:08 10.0.0.0 10.0.0.1 5 (20%) 0
*Apr 20 07:36:09 10.0.0.0 10.0.0.1 10 (40%) 0
*Apr 20 07:36:10 10.0.0.0 10.0.0.1 15 (60%) 0
Table 26 describes the fields shown in the display.
Table 26 show ip mrm status-report Field Descriptions
Field
|
Description
|
Timestamp
|
Time when the status report arrived in the cache. Month and date, hours:minutes:seconds.
|
Manager
|
IP address of the Manager.
|
Test Receiver
|
IP address of the Test Receiver.
|
Pkt Loss/Dup
|
Number of packets lost or duplicated.
|
(%)
|
Percentage of packets lost or duplicated. Loss percentage is calculated based on the packet-delay value of the senders command, which defaults to 200 milliseconds (or 5 packets per second). If the default for the window keyword (5 seconds) is not changed, then the Test Receiver expects 5 packets per second for 5 seconds = 25 packets. If the Test Receiver receives only 15 packets, then 25 - 15 = 10 lost packets. Lost packets divided by packets expected equals loss percentage; 10/25 equals a loss percentage of 40 percent.
A negative percentage indicates duplicate packets were received.
If the packet loss reaches 100 percent, the Test Receiver will not send periodic reports until the packet loss decreases to less than 100 percent.
|
Ehsr
|
Extended highest sequence number received from Real-Time Transport Protocol (RTP).
|
Related Commands
Command
|
Description
|
clear ip mrm status-report
|
Clears the MRM status report cache.
|
show ip mroute
To display the contents of the multicast routing (mroute) table, use the show ip mroute command in user EXEC or privileged EXEC mode.
show ip mroute [vrf vrf-name] [[active [kbps] [interface type number] | bidirectional | count
[terse] | dense | interface type number | proxy | pruned | sparse | ssm | static | summary] |
[group-address [source-address]] [count [terse] | interface type number | proxy | pruned |
summary] | [source-address group-address] [count [terse] | interface type number | proxy |
pruned | summary] | [group-address] active [kbps] [interface type number | verbose]]
Syntax Description
vrf vrf-name
|
(Optional) Filters the output to display only the contents of the mroute table that pertain to the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
active kbps
|
(Optional) Displays the rate that active sources are sending to multicast groups, in kilobits per second (kbps). Active sources are those sending at the kbps value or higher. The range is from 1 to 4294967295. The kbps default is 4 kbps.
|
interface type number
|
(Optional) Filters the output to display only mroute table information related to the interface specified for the type number arguments.
|
bidirectional
|
(Optional) Filters the output to display only information about bidirectional routes in the mroute table.
|
count
|
(Optional) Displays statistics about the group and source, including number of packets, packets per second, average packet size, and bytes per second.
|
terse
|
(Optional) Filters the output to display a subset of mroute statistics, excluding source and group statistics for each mroute entry in the mroute table.
|
dense
|
(Optional) Filters the output to display only information about dense mode routes in the mroute table.
|
proxy
|
(Optional) Displays information about Reverse Path Forwarding (RPF) vector proxies received on a multicast router.
|
pruned
|
(Optional) Filters the output to display only information about pruned routes in the mroute table.
|
sparse
|
(Optional) Filters the output to display only information about sparse mode routes in the mroute table.
|
ssm
|
(Optional) Filters the output to display only the Source Specific Multicast (SSM) routes in the mroute table.
|
static
|
(Optional) Filters the output to display only the static routes in the mroute table.
|
summary
|
(Optional) Filters the output to display a one-line, abbreviated summary of each entry in the mroute table.
|
group-address
|
(Optional) IP address or Domain Name System (DNS) name of a multicast group.
|
source-address
|
(Optional) IP address or DNS name of a multicast source.
|
verbose
|
(Optional) Displays additional information.
|
Command Default
If you omit all optional arguments and keywords, the show ip mroute command displays all entries in the mroute table.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
10.0
|
This command was introduced.
|
12.0(5)T
|
This command was modified. The H flag for multicast multilayer switching (MMLS) was added in the output display.
|
12.1(3)T
|
This command was modified. The U, s, and I flags for SSM were introduced.
|
12.0(23)S
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.0(30)S
|
This command was modified. The proxy keyword and the v and V flags were added for the Multicast VPN Inter-AS Support feature.
|
12.2(13)T
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S. The vrf keyword and vrf-name argument were added.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
12.3
|
This command was modified. The Z, Y, and y flags were introduced.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.4(6)T
|
This command was modified. The terse keyword was added.
|
12.4(7)
|
This command was modified. The terse keyword was added.
|
12.2(18)SXF2
|
This command was modified. The terse keyword was added.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA. The terse keyword was added. The proxy keyword and the v and V flags were added for the Multicast VPN Inter-AS Support feature.
|
12.2(31)SB2
|
This command was modified. The E flag for the Multicast VPN Extranet Support feature was introduced. The proxy keyword and the v and V flags were added for the Multicast VPN Inter-AS Support feature. The terse keyword was added.
|
12.2(33)SXH
|
This command was modified. The proxy keyword and the v and V flags were added for the Multicast VPN Inter-AS Support feature.
|
12.2(33)SRC
|
This command was modified. The E flag for the Multicast VPN Extranet Support feature was introduced.
|
12.2(33)SRE
|
This command was modified. The verbose keyword was added.
|
12.4(20)T
|
This command was modified. The proxy keyword and the v and V flags were added for the Multicast VPN Inter-AS Support feature.
|
15.0(1)M
|
This command was modified. The E flag for the Multicast VPN Extranet Support feature was introduced.
|
15.0(1)S
|
This command was integrated into Cisco IOS Release 15.0(1)S.
|
Cisco IOS XE Release 3.2S
|
This command was implemented on Cisco ASR 1000 series routers.
|
Usage Guidelines
Use the show ip mroute command to display information about mroute entries in the mroute table. The Cisco IOS software populates the multicast routing table by creating (S, G) entries from (*, G) entries. The asterisk (*) refers to all source addresses, the "S" refers to a single source address, and the "G" is the destination multicast group address. In creating (S, G) entries, the software uses the best path to that destination group found in the unicast routing table (that is, through RPF).
Use the clear ip mroute command to delete entries from the mroute table.
Examples
The following is sample output from the show ip mroute command for a router operating in sparse mode:
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel,
Y - Joined MDT-data group, y - Sending to MDT-data group
Interface state: Interface, Next-Hop, State/Mode
(*, 224.0.255.3), uptime 5:29:15, RP is 192.168.37.2, flags: SC
Incoming interface: Tunnel0, RPF neighbor 10.3.35.1, Dvmrp
Ethernet0, Forward/Sparse, 5:29:15/0:02:57
(192.168.46.0/24, 224.0.255.3), uptime 5:29:15, expires 0:02:59, flags: C
Incoming interface: Tunnel0, RPF neighbor 10.3.35.1
Ethernet0, Forward/Sparse, 5:29:15/0:02:57
The following is sample output from the show ip mroute command with the IP multicast group address 232.6.6.6 specified:
Router# show ip mroute 232.6.6.6
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel,
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags:H - Hardware switched
Interface state:Interface, Next-Hop or VCD, State/Mode
(*, 232.6.6.6), 00:01:20/00:02:59, RP 224.0.0.0, flags:sSJP
Incoming interface:Null, RPF nbr 224.0.0.0
Outgoing interface list:Null
(10.2.2.2, 232.6.6.6), 00:01:20/00:02:59, flags:CTI
Incoming interface:Ethernet3/3, RPF nbr 224.0.0.0
Ethernet3/1, Forward/Sparse-Dense, 00:00:36/00:02:35
The following is sample output from the show ip mroute command for a router operating in dense mode. This output displays the contents of the IP multicast routing table for the multicast group named cbone-audio.
Router# show ip mroute cbone-audio
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel,
Y - Joined MDT-data group, y - Sending to MDT-data group
Interface state: Interface, Next-Hop, State/Mode
(*, 224.0.255.1), uptime 0:57:31, expires 0:02:59, RP is 224.0.0.0, flags: DC
Incoming interface: Null, RPF neighbor 224.0.0.0, Dvmrp
Ethernet0, Forward/Dense, 0:57:31/0:02:52
Tunnel0, Forward/Dense, 0:56:55/0:01:28
(192.168.37.100, 224.0.255.1), uptime 20:20:00, expires 0:02:55, flags: C
Incoming interface: Tunnel0, RPF neighbor 10.20.37.33, Dvmrp
Ethernet0, Forward/Dense, 20:20:00/0:02:52
The following is sample output from the show ip mroute command that shows the virtual circuit descriptor (VCD) value, because an ATM interface with Protocol Independent Multicast (PIM) multipoint signaling is enabled:
Router# show ip mroute 224.1.1.1
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel,
Y - Joined MDT-data group, y - Sending to MDT-data group
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.1.1.1), 00:03:57/00:02:54, RP 172.16.0.0, flags: SJ
Incoming interface: Null, RPF nbr 224.0.0.0224.0.0.0
ATM0/0, VCD 14, Forward/Sparse, 00:03:57/00:02:53
The following is sample output from the show ip mroute command with the summary keyword:
Router# show ip mroute summary
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel,
Y - Joined MDT-data group, y - Sending to MDT-data group
Interface state: Interface, Next-Hop, State/Mode
(*, 224.255.255.255), 2d16h/00:02:30, RP 172.16.10.13, flags: SJPC
(*, 224.2.127.253), 00:58:18/00:02:00, RP 172.16.10.13, flags: SJC
(*, 224.1.127.255), 00:58:21/00:02:03, RP 172.16.10.13, flags: SJC
(*, 224.2.127.254), 2d16h/00:00:00, RP 172.16.10.13, flags: SJCL
(172.16.160.67, 224.2.127.254), 00:02:46/00:00:12, flags: CLJT
(172.16.244.217, 224.2.127.254), 00:02:15/00:00:40, flags: CLJT
(172.16.8.33, 224.2.127.254), 00:00:25/00:02:32, flags: CLJT
(172.16.2.62, 224.2.127.254), 00:00:51/00:02:03, flags: CLJT
(172.16.8.3, 224.2.127.254), 00:00:26/00:02:33, flags: CLJT
(172.16.60.189, 224.2.127.254), 00:03:47/00:00:46, flags: CLJT
The following is sample output from the show ip mroute command with the active keyword:
Router# show ip mroute active 4
Active IP Multicast Sources - sending >= 4 kbps
Group: 224.2.127.254, (sdr.cisco.com)
Source: 192.168.28.69 (mbone.ipd.anl.gov)
Rate: 1 pps/4 kbps(1sec), 4 kbps(last 1 secs), 4 kbps(life avg)
Group: 224.2.201.241, ACM 97
Source: 192.168.52.160 (webcast3-e1.acm97.interop.net)
Rate: 9 pps/93 kbps(1sec), 145 kbps(last 20 secs), 85 kbps(life avg)
Group: 224.2.207.215, ACM 97
Source: 192.168.52.160 (webcast3-e1.acm97.interop.net)
Rate: 3 pps/31 kbps(1sec), 63 kbps(last 19 secs), 65 kbps(life avg)
Table 27 describes the significant fields shown in the displays.
Table 27 show ip mroute Field Descriptions
Field
|
Description
|
Flags:
|
Provides information about the entry.
•D—Dense. Entry is operating in dense mode.
•S—Sparse. Entry is operating in sparse mode.
•B—Bidir Group. Indicates that a multicast group is operating in bidirectional mode.
•s—SSM Group. Indicates that a multicast group is within the SSM range of IP addresses. This flag is reset if the SSM range changes.
•C—Connected. A member of the multicast group is present on the directly connected interface.
|
|
|
|
|
|
Flags: (continued)
|
•L—Local. The router itself is a member of the multicast group. Groups are joined locally by the ip igmp join-group command (for the configured group), the ip sap listen command (for the well-known session directory groups), and rendezvous point (RP) mapping (for the well-known groups 224.0.1.39 and 224.0.1.40). Locally joined groups are not fast switched.
•P—Pruned. Route has been pruned. The Cisco IOS software keeps this information so that a downstream member can join the source.
•R—RP-bit set. Indicates that the (S, G) entry is pointing toward the RP. This flag typically indicates a prune state along the shared tree for a particular source.
•F—Register flag. Indicates that the software is registering for a multicast source.
•T—SPT-bit set. Indicates that packets have been received on the shortest path source tree.
•J—Join SPT. For (*, G) entries, indicates that the rate of traffic flowing down the shared tree is exceeding the SPT-Threshold set for the group. (The default SPT-Threshold setting is 0 kbps.) When the J - Join shortest path tree (SPT) flag is set, the next (S, G) packet received down the shared tree triggers an (S, G) join in the direction of the source, thereby causing the router to join the source tree.
|
| |
For (S, G) entries, indicates that the entry was created because the SPT-Threshold for the group was exceeded. When the J - Join SPT flag is set for (S, G) entries, the router monitors the traffic rate on the source tree and attempts to switch back to the shared tree for this source if the traffic rate on the source tree falls below the SPT-Threshold of the group for more than 1 minute.
|
Flags: (continued)
|
Note The router measures the traffic rate on the shared tree and compares the measured rate to the SPT-Threshold of the group once every second. If the traffic rate exceeds the SPT-Threshold, the J - Join SPT flag is set on the (*, G) entry until the next measurement of the traffic rate. The flag is cleared when the next packet arrives on the shared tree and a new measurement interval is started.
If the default SPT-Threshold value of 0 kbps is used for the group, the J - Join SPT flag is always set on (*, G) entries and is never cleared. When the default SPT-Threshold value is used, the router immediately switches to the shortest path source tree when traffic from a new source is received.
•M—MSDP created entry. Indicates that a (*, G) entry was learned through a Multicast Source Discovery Protocol (MSDP) peer. This flag is applicable only for an RP running MSDP.
|
|
|
|
|
|
|
| |
•E—Extranet source mroute entry. Indicates that a (*, G) or (S, G) entry in the VRF routing table is a source Multicast VRF (MVRF) entry and has extranet receiver MVRF entries linked to it.
•X—Proxy Join Timer Running. Indicates that the proxy join timer is running. This flag is set only for (S, G) entries of an RP or "turnaround" router. A "turnaround" router is located at the intersection of a shared path (*, G) tree and the shortest path from the source to the RP.
•A—Candidate for MSDP Advertisement. Indicates that an (S, G) entry was advertised through an MSDP peer. This flag is applicable only for an RP running MSDP.
•U—URD. Indicates that a URL Rendezvous Directory (URD) channel subscription report was received for the (S, G) entry.
|
| |
•I—Received Source Specific Host Report. Indicates that an (S, G) entry was created by an (S, G) report. This (S, G) report could have been created by Internet Group Management Protocol Version 3 (IGMPv3), URD, or IGMP v3lite. This flag is set only on the designated router (DR).
•Z—Multicast Tunnel. Indicates that this entry is an IP multicast group that belongs to the Multicast Distribution Tree (MDT) tunnel. All packets received for this IP multicast state are sent to the MDT tunnel for decapsulation.
•Y—Joined MDT-data group. Indicates that the traffic was received through an MDT tunnel that was set up specifically for this source and group. This flag is set in Virtual Private Network (VPN) mroute tables only.
|
Flags: (continued)
|
•y—Sending to MDT-data group. Indicates that the traffic was sent through an MDT tunnel that was set up specifically for this source and group. This flag is set in VPN mroute tables only.
|
|
|
|
|
|
|
Outgoing interface flags:
|
Provides information about the entry.
•H—Hardware switched. Indicates that a multicast Multilayer Switching (MMLS) forwarding path has been established for this entry.
|
Timers:Uptime/Expires
|
"Uptime" indicates per interface how long (in hours, minutes, and seconds) the entry has been in the IP multicast routing table. "Expires" indicates per interface how long (in hours, minutes, and seconds) until the entry will be removed from the IP multicast routing table.
|
Interface state:
|
Indicates the state of the incoming or outgoing interface.
•Interface. Indicates the type and number of the interface listed in the incoming or outgoing interface list.
•Next-Hop or VCD. "Next-hop" specifies the IP address of the downstream neighbor. "VCD" specifies the virtual circuit descriptor number. "VCD0" means the group is using the static map virtual circuit.
•State/Mode. "State" indicates that packets will either be forwarded, pruned, or null on the interface depending on whether there are restrictions due to access lists or a time-to-live (TTL) threshold. "Mode" indicates whether the interface is operating in dense, sparse, or sparse-dense mode.
|
(*, 224.0.255.1) and (192.168.37.100, 224.0.255.1)
|
Entry in the IP multicast routing table. The entry consists of the IP address of the source followed by the IP address of the multicast group. An asterisk (*) in place of the source router indicates all sources.
Entries in the first format are referred to as (*, G) or "star comma G" entries. Entries in the second format are referred to as (S, G) or "S comma G" entries. (*, G) entries are used to build (S, G) entries.
|
RP
|
Address of the RP router. For routers and access servers operating in sparse mode, this address is always 224.0.0.0.
|
flags:
|
Information about the entry.
|
Incoming interface:
|
Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.
|
RPF neighbor or RPF nbr
|
IP address of the upstream router to the source. Tunneling indicates that this router is sending data to the RP encapsulated in register packets. The hexadecimal number in parentheses indicates to which RP it is registering. Each bit indicates a different RP if multiple RPs per group are used. If an asterisk (*) appears after the IP address in this field, the RPF neighbor has been learned through an assert.
|
Outgoing interface list:
|
Interfaces through which packets will be forwarded. When the ip pim nbma-mode command is enabled on the interface, the IP address of the Protocol Independent Multicast (PIM) neighbor is also displayed.
|
The following is sample output from the show ip mroute command with the count keyword:
Router# show ip mroute count
4045 routes using 2280688 bytes of memory
41 groups, 97.65 average sources per group
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts:Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group:239.0.18.1, Source count:200, Packets forwarded:348232, Packets received:348551
RP-tree:Forwarding:12/0/218/0, Other:12/0/0
Source:10.1.1.1/32, Forwarding:1763/1/776/9, Other:1764/0/1
Source:10.1.1.2/32, Forwarding:1763/1/777/9, Other:1764/0/1
Source:10.1.1.3/32, Forwarding:1763/1/783/10, Other:1764/0/1
Source:10.1.1.4/32, Forwarding:1762/1/789/10, Other:1763/0/1
Source:10.1.1.5/32, Forwarding:1762/1/768/10, Other:1763/0/1
Source:10.1.1.6/32, Forwarding:1793/1/778/10, Other:1794/0/1
Source:10.1.1.7/32, Forwarding:1793/1/763/10, Other:1794/0/1
Source:10.1.1.8/32, Forwarding:1793/1/785/10, Other:1794/0/1
Source:10.1.1.9/32, Forwarding:1793/1/764/9, Other:1794/0/1
Source:10.1.1.10/32, Forwarding:1791/1/774/10, Other:1792/0/1
Source:10.1.2.1/32, Forwarding:1689/1/780/10, Other:1691/0/2
Source:10.1.2.2/32, Forwarding:1689/1/782/10, Other:1691/0/2
Source:10.1.2.3/32, Forwarding:1689/1/776/9, Other:1691/0/2
Group:239.0.18.132, Source count:0, Packets forwarded:8810, Packets received:8810
RP-tree:Forwarding:8810/7/780/49, Other:8810/0/0
Group:239.0.17.132, Source count:0, Packets forwarded:704491, Packets received:704491
RP-tree:Forwarding:704491/639/782/4009, Other:704491/0/0
Group:239.0.17.133, Source count:0, Packets forwarded:704441, Packets received:704441
RP-tree:Forwarding:704441/639/782/3988, Other:704441/0/0
Group:239.0.18.133, Source count:0, Packets forwarded:8810, Packets received:8810
RP-tree:Forwarding:8810/8/786/49, Other:8810/0/0
Group:239.0.18.193, Source count:0, Packets forwarded:0, Packets received:0
Group:239.0.17.193, Source count:0, Packets forwarded:0, Packets received:0
Group:239.0.18.134, Source count:0, Packets forwarded:8803, Packets received:8803
RP-tree:Forwarding:8803/8/774/49, Other:8803/0/0
Note The RP-tree field is displayed only for non-SSM groups that have a (*, G) entry and a positive packet received count.
The following is sample output from the show ip mroute command with the count and terse keywords:
Router# show ip mroute count terse
4 routes using 2610 bytes of memory
3 groups, 0.33 average sources per group
Table 28 describes the significant fields shown in the displays.
Table 28 show ip mroute count Field Descriptions
Field
|
Description
|
Group:
|
Summary statistics for traffic on an IP multicast group G. This row is displayed only for non-SSM groups.
|
Forwarding Counts:
|
Statistics on the packets that are received and forwarded to at least one interface.
Note There is no specific command to clear only the forwarding counters; you can clear only the actual multicast forwarding state with the clear ip mroute command. Issuing this command will cause interruption of traffic forwarding.
|
Pkt Count/
|
Total number of packets received and forwarded since the multicast forwarding state to which this counter applies was created.
|
Pkts per second/
|
Number of packets received and forwarded per second. On an IP multicast fast-switching platform, this number is the number of packets during the last second. Other platforms may use a different approach to calculate this number. Please refer to the platform documentation for more information.
|
Avg Pkt Size/
|
Total number of bytes divided by the total number of packets for this multicast forwarding state. There is no direct display for the total number of bytes. You can calculate the total number of bytes by multiplying the average packet size by the packet count.
|
Kilobits per second
|
Bytes per second divided by packets per second divided by 1000. On an IP multicast fast-switching platform, the number of packets per second is the number of packets during the last second. Other platforms may use a different approach to calculate this number. Please refer to the platform documentation for more information.
|
Other counts:
|
Statistics on the received packets. These counters include statistics about the packets received and forwarded and packets received but not forwarded.
|
Total/
|
Total number of packets received.
|
RPF failed/
|
Number of packets not forwarded due to a failed RPF or acceptance check (when bidir-PIM is configured).
|
Other drops (OIF-null, rate-limit etc)
|
Number of packets not forwarded for reasons other than an RPF or acceptance check (such as the OIF list was empty or because the packets were discarded because of a configuration, such as ip multicast rate-limit, was enabled).
|
Group:
|
Summary information about counters for (*, G) and the range of (S, G) states for one particular group G. The following RP-tree: and Source: output fields contain information about the individual states belonging to this group.
Note For SSM range groups, the groups displayed after the Group output field are statistical. All SSM range (S, G) states are individual, unrelated SSM channels.
|
Source count:
|
Number of (S, G) states for this group G. Individual (S, G) counters are detailed in the output field rows.
|
Packets forwarded:
|
The sum of the packets detailed in the Forwarding Counts fields for this IP multicast group G. This field is the sum of the RP-tree and all Source fields for this group G.
|
Packets received:
|
The sum of packets detailed in the Other counts fields for this IP multicast group G. This field is the sum of the Other counts and Pkt Count fields of the RP-tree and Source rows for this group G.
|
RP-tree:
|
Counters for the (*, G) state of this group G. These counters are displayed only for groups that have a forwarding mode that does not forward packets on the shared tree. These (*, G) groups are bidir-PIM and PIM sparse mode (PIM-SM) groups. There are no RP-tree displays for PIM dense mode (PIM-DM) and SSM range groups.
|
Source:
|
Counters for an individual (S, G) state of this group G. There are no (S, G) states for bidir-PIM groups.
|
Related Commands
Command
|
Description
|
clear ip mroute
|
Deletes entries from the mroute table.
|
show ip msdp count
To display the number of sources and groups originated in Multicast Source Discovery Protocol (MSDP) Source-Active (SA) messages and the number of SA messages from an MSDP peer in the SA cache, use the show ip msdp count command in user EXEC or privileged EXEC mode.
show ip msdp [vrf vrf-name] count [as-number]
Syntax Description
vrf
|
(Optional) Supports the multicast VPN routing and forwarding (VRF) instance.
|
vrf-name
|
(Optional) Name assigned to the VRF.
|
as-number
|
(Optional) The number of sources and groups originated in SA messages from the specified autonomous system number.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.0(7)T
|
This command was introduced.
|
12.1(7)
|
This command was modified to display information about the number of SA messages from each MSDP peer in the SA cache.
|
12.0(23)S
|
The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(18)SXE
|
Support for this command was introduced on the Supervisor Engine 720 only.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
Usage Guidelines
The ip msdp cache-sa-state command must be configured for this command to have any output.
Examples
The following is sample output from the show ip msdp count command:
Router# show ip msdp count
SA State per Peer Counters, <Peer>: <# SA learned>
SA State per ASN Counters, <asn>: <# sources>/<# groups>
?: 192/98, 9: 1/1, 14: 107/57, 17: 7/5
18: 4/3, 25: 23/17, 26: 39/27, 27: 2/2
32: 19/7, 38: 2/1, 52: 4/4, 57: 1/1
68: 4/4, 73: 12/8, 81: 19/1, 87: 9/6
Table 29 describes the significant fields shown in the display.
Table 29 show ip msdp count Field Descriptions
Field
|
Description
|
224.135.250.116: 24
|
MSDP peer with IP address 224.135.250.116: 24 SA messages from the MSDP peer in the SA cache.
|
Total entries
|
Total number of SA entries in the SA cache.
|
9: 1/1
|
Autonomous system 9: 1 source/1 group.
|
Related Commands
Command
|
Description
|
ip msdp cache-sa-state
|
Enables the router to create SA state.
|
show ip msdp peer
To display detailed information about Multicast Source Discovery Protocol (MSDP) peers, use the show ip msdp peer command in user EXEC or privileged EXEC mode.
show ip msdp [vrf vrf-name] peer [peer-address | peer-name] [accepted-sas | advertised-sas]
Syntax Description
vrf vrf-name
|
(Optional) Displays information about MSDP peers associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
peer-address | peer-name
|
(Optional) Domain Name System (DNS) name or IP address of the MSDP peer for which information is displayed.
|
accepted-sas
|
(Optional) Displays information about Source-Active (SA) messages received by the MSDP peer.
|
advertised-sas
|
(Optional) Displays information about SA messages advertised to the MSDP peer.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(7)T
|
This command was introduced.
|
12.1(7)
|
This command was modified. The output was modified to display information about the Source Active (SA) message limit configured using the ip msdp sa-limit command.
|
12.0(23)S
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
This command was modified. The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(18)SXE
|
This command was implemented on the Supervisor Engine 720 only.
|
12.4(2)T
|
This command was modified. The output was modified to display whether an MSDP peer has message digest 5 (MD5) password authentication enabled.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2(33)SXH
|
This command was integrated into Cisco IOS Release 12.2(33)SXH.
|
12.2(33)SRE
|
This command was integrated into Cisco IOS Release 12.2(33)SRE.
|
Examples
The following is sample output from the show ip msdp peer command:
Router# show ip msdp peer 224.135.250.116
MSDP Peer 224.135.250.116 (rtp5-rp1.cisco.com), AS 109 (configured AS)
State: Up, Resets: 9, Connection source: Loopback2 (228.69.199.17)
Uptime(Downtime): 1d10h, Messages sent/received: 436765/429062
Output messages discarded: 0
Connection and counters cleared 1w2d ago
Input (S,G) filter: none, route-map: none
Input RP filter: none, route-map: none
Output (S,G) filter: none, route-map: none
Output RP filter: none, route-map: none
Sending SA-Requests to peer: disabled
SAs learned from this peer: 32, SAs limit: 500
Input queue size: 0, Output queue size: 0
Table 30 describes the significant fields shown in the display.
Table 30 show ip msdp peer Field Descriptions
Field
|
Description
|
MSDP Peer
|
IP address of the MSDP peer.
|
AS
|
Autonomous system to which the MSDP peer belongs.
|
State:
|
State of the MSDP peer.
|
Connection source:
|
Interface used to obtain the IP address for the TCP local connection address.
|
Uptime (Downtime):
|
Days and hours the MSDP peer is up or down. If the time is less than 24 hours, it is shown in terms of hours:minutes:seconds.
|
Messages sent/received:
|
Number of SA messages sent to the MSDP peer/number of SA messages received from the MSDP peer.
|
SA Filtering:
|
Information regarding access list filtering of SA input and output, if any.
|
SA-Requests:
|
Information regarding access list filtering of SA requests, if any.
|
SAs learned from this peer:
|
Number of SA messages from the MSDP peer in the SA cache.
|
SAs limit:
|
SA message limit for this MSDP peer.
|
Related Commands
Command
|
Description
|
ip msdp peer
|
Configures an MSDP peer.
|
show ip msdp rpf-peer
To display the unique Multicast Source Discovery Protocol (MSDP) peer information from which a router will accept Source-Active (SA) messages originating from the specified rendezvous point (RP), use the show ip msdp rpf-peer command in user EXEC or privileged EXEC mode.
show ip msdp [vrf vrf-name] rpf-peer rp-address
Syntax Description
vrf vrf-name
|
(Optional) Displays MSDP information about a peer from which the router will accept SA messages that originated from an RP associated with Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified for the vrf-name argument.
|
rp-address
|
Address of the rendezvous point (RP).
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.3(4)T
|
This command was introduced.
|
12.0(27)S
|
This command was integrated into Cisco IOS Release 12.0(27)S.
|
12.2(25)S
|
This command was integrated into Cisco IOS Release 12.2(25)S.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2(33)SXH
|
This command was integrated into Cisco IOS Release 12.2(33)SXH.
|
Usage Guidelines
Use this command when you need MSDP information about a peer from which the router will accept SA messages that originated from an RP. The ip msdp rfc-3618 rpf-rules command must be configured for the show ip msdp rpf-peer command to generate output.
Examples
The following is sample output for the show ip msdp rpf-peer command:
Router# show ip msdp rpf-peer 10.0.0.0
RPF peer information for ? (25.8.8.8)
RPF route/mask: 0.0.0.0/0
RPF rule: Peer is IGP next hop of best route
Table 31 describes the significant fields shown in the display.
Table 31 show ip msdp rpf Field Descriptions
Field
|
Description
|
RPF peer information for
|
Reverse Path Forwarding (RPF) peer address for the specified RP address. The question mark (?) indicates that the system does not find a name for that particular address.
|
RPF peer:
|
Peer address from which this device would accept MSDP SAs originated by the specified RP address. The question mark (?) indicates that the system does not find a name for that particular address.
|
RPF route/mask:
|
Network and mask of the RP address that the system determines from the route lookups that it used to choose the RPF peer.
|
RPF rule:
|
Rule used to determine the RPF peer for the specified RP address.
|
RPF type:
|
Route lookup or protocol used to choose the RPF peer for the specified RP address.
|
Related Commands
Command
|
Description
|
ip msdp rpf rfc3618
|
Enables IETF RFC 3618-compliant MSDP peer-RPF forwarding rules.
|
show ip msdp sa-cache
To display the (S,G) state learned from Multicast Source Discovery Protocol (MSDP) peers, use the show ip msdp sa-cache command in user EXEC or privileged EXEC mode.
show ip msdp [vrf vrf-name] sa-cache [group-address | source-address | group-name |
source-name] [group-address | source-address | group-name | source-name] [as-number]
[rejected-sa [detail] [read-only]]
Syntax Description
vrf
|
(Optional) Supports the multicast VPN routing and forwarding (VRF) instance.
|
vrf-name
|
(Optional) Name assigned to the VRF.
|
group-address | source-address | group-name | source-name
|
(Optional) Group address, source address, group name, or source name of the group or source about which (S, G) state information is displayed. If two addresses or names are specified, an (S, G) entry corresponding to those addresses is displayed. If only one group address is specified, all sources for that group are displayed.
If no options are specified, the entire Source-Active (SA) cache is displayed.
|
as-number
|
(Optional) Autonomous system (AS) number from which the SA message originated.
|
rejected-sa
|
(Optional) Displays the most recently received and rejected MSDP SA messages.
|
detail
|
(Optional) Displays detailed information about the IP address of the MSDP peer that sent the SA message and the reason that the SA message was rejected.
|
read-only
|
(Optional) Checkpoints the rejected SA cache. Once checkpointed, the rejected SA cache is emptied.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.0(7)T
|
This command was introduced.
|
12.0(23)S
|
The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
By default, (S,G) state is cached.
Rejected SA messages are cached only if the ip msdp cache-rejected-sa command is configured.
Use the show ip msdp sa-cache with the optional rejected-sa keyword to display SA messages stored in the rejected SA cache. When the detail keyword is added to the command string, the output includes the IP address of the MSDP peer router that sent the SA message and the reason that the SA message was rejected.
When the optional read-only keyword is added to the command string, the router checkpoints the rejected SA cache, which ensures that a consistent snapshot of the rejected SA cache is displayed in the output. After being checkpointed, the rejected SA cache is cleared.
Note Checkpointing the rejected SA cache requires that the router make a second copy of the rejected SA cache, which could cause the command to fail if the router is low on memory.
When the optional read-only keyword is not added to the command string, the router displays rejected MSDP SA messages out of the active rejected SA cache, which could result in inconsistent display output if rejected SA message entries are overwritten by rejected SA message entries that are captured as the output is being processed for display.
Examples
The following is sample output from the show ip msdp sa-cache command:
Router# show ip msdp sa-cache
MSDP Source-Active Cache - 2398 entries
(172.16.41.33, 238.105.148.0), RP 172.16.3.111, MBGP/AS 704, 2d10h/00:05:33
(172.16.112.8, 224.2.0.1), RP 192.168.200.65, MBGP/AS 10888, 00:03:21/00:02:38
(172.16.10.13, 227.37.32.1), RP 192.168.3.92, MBGP/AS 704, 05:22:20/00:03:32
(172.16.66.18, 233.0.0.1), RP 192.168.3.111, MBGP/AS 704, 2d10h/00:05:35
(172.16.66.148, 233.0.0.1), RP 192.168.3.111, MBGP/AS 704, 2d10h/00:05:35
(172.16.10.13, 227.37.32.2), RP 192.168.3.92, MBGP/AS 704, 00:44:30/00:01:31
(172.16.70.203, 224.2.236.2), RP 192.168.253.7, MBGP/AS 3582, 02:34:16/00:05:49
(172.18.42.104, 236.195.56.2), RP 192.168.3.92, MBGP/AS 704, 04:21:13/00:05:22
(172.16.10.13, 227.37.32.3), RP 192.168.3.92, MBGP/AS 704, 00:44:30/00:02:31
(172.18.15.43, 224.0.92.3), RP 192.168.200.65, MBGP/AS 10888, 6d09h/00:05:35
(172.18.15.111, 224.0.92.3), RP 192.168.200.65, MBGP/AS 10888, 16:18:08/00:05:35
(172.18.21.45, 224.0.92.3), RP 192.168.200.65, MBGP/AS 10888, 16:18:08/00:05:35
(172.18.15.75, 224.0.92.3), RP 192.168.200.65, MBGP/AS 10888, 08:40:52/00:05:35
(172.18.15.100, 224.0.92.3), RP 192.168.200.65, MBGP/AS 10888, 08:40:52/00:05:35
(172.16.10.13, 227.37.32.6), RP 192.168.3.92, MBGP/AS 704, 00:45:30/00:05:31
(172.18.41.33, 224.247.228.10), RP 192.168.3.111, MBGP/AS 704, 2d10h/00:05:35
(172.18.222.210, 224.2.224.13), RP 192.168.3.92, MBGP/AS 704, 01:51:53/00:05:22
(172.18.41.33, 229.231.124.13), RP 192.168.3.111, MBGP/AS 704, 2d10h/00:05:33
(172.18.32.138, 224.2.200.23), RP 192.168.253.7, MBGP/AS 3582, 21:33:40/00:05:49
(172.18.75.244, 224.2.200.23), RP 192.168.253.7, MBGP/AS 3582, 21:33:40/00:05:49
Table 32 describes the significant fields shown in the display.
Table 32 show ip msdp sa-cache Field Descriptions
Field
|
Description
|
(172.16.41.33, 238.105.148.0)
|
Indicates that the first address (source) is sending to the second address (group).
|
RP 172.16.3.111
|
IP address of the Rendezvous point (RP) where the SA message originated.
|
MBGP/AS 704
|
Indicates that the RP from which the SA message originated is in AS 704 according to multiprotocol Border Gateway Protocol (BGP).
|
2d10h/00:05:33
|
The route has been cached for 2 days and 10 hours. If no SA message is received in 5 minutes and 33 seconds, the route will be removed from the SA cache.
|
The following is sample output from the show ip msdp sa-cache command with the rejected, detail, and read-only keywords specified:
Router# show ip msdp sa-cache rejected detail read-only
35 rejected SAs received over 02:50:01, cache size: 50 entries
Timestamp (source, group)
2832.248, (10.10.10.4, 227.7.7.12), RP: 10.10.10.4, Peer: 10.10.10.4,
Reason: sa-limit-exceeded
2915.232, (10.10.10.8, 224.1.1.1), RP: 10.11.11.11, Peer: 10.10.10.8,
3509.584, (10.12.12.2, 225.5.5.5), RP: 10.15.15.1, Peer: 10.12.12.2,
Table 33 describes the significant fields shown in the display.
Table 33 show ip msdp sa-cache rejected detail read-only Field Descriptions
Field
|
Description
|
35 rejected SAs received over 02:50:01
|
The number of rejected SA message entries received in the length of time indicated in HH:MM:SS.
|
cache size:
|
Indicates the size of the rejected SA cache. This field is controlled by the ip msdp rejected-sa-cache command. If the rejected SA cache overflows, entries are overwritten, starting from the first entry.
|
Timestamp
|
Indicates the router uptime in seconds.milliseconds.
|
(source, group)
|
The (S, G) information advertised in the rejected SA message.
|
RP:
|
Indicates the IP address of the Rendezvous Point (RP) that originated the SA message.
|
Peer:
|
Indicates the IP address of the MSDP peer that sent the rejected SA message.
|
Reason:
|
Indicates the reason that the router rejected the SA message.
The possible reasons are as follows:
•autorp-group—Indicates that the SA message was rejected because it included one of the two AutoRP groups (224.0.1.39 and 224.0.1.40).
•in-filter—Indicates that the SA message was rejected because it was filtered by a configured incoming filter list (configured by the ip msdp sa-filter in command).
•no-memory—Indicates that the SA message was rejected because the router ran out of memory while allocating storage for the MSDP SA message.
•rpf-fail—Indicates that the SA message was rejected because it failed the Reverse Path Forwarding (RPF) check.
•rp-filter—Indicates that the SA message was rejected because it was filtered by a configured incoming RP filter list (configured by the ip msdp sa-filter in command).
•sa-limit-exceeded—Indicates that the SA message was rejected because the maximum number of SA cache entries (controlled by the ip msdp sa-limit command) was already exhausted when the SA message was received.
•ssm-range—Indicates that the SA message was rejected because it indicated a group in the SSM range.
|
Related Commands
Command
|
Description
|
clear ip msdp sa-cache
|
Clears MSDP SA cache entries.
|
ip msdp cache-sa-state
|
Enables the router to create SA state.
|
show ip msdp summary
To display Multicast Source Discovery Protocol (MSDP) peer status, use the show ip msdp summary command in user EXEC or privileged EXEC mode.
show ip msdp [vrf vrf-name] summary
Syntax Description
vrf
|
(Optional) Supports the multicast VPN routing and forwarding (VRF) instance.
|
vrf-name
|
(Optional) Name assigned to the VRF.
|
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.0(7)T
|
This command was introduced.
|
12.1(7)
|
This command was modified to display information about the number of Source-Active (SA) messages from each MSDP peer in the SA cache.
|
12.0(23)S
|
The vrf keyword and vrf-name argument were added.
|
12.2(13)T
|
The vrf keyword and vrf-name argument were added.
|
12.2(14)S
|
This command was integrated into Cisco IOS Release 12.2(14)S.
|
12.2(18)SXE
|
Support for this command was introduced on the Supervisor Engine 720 only.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2(27)SBC
|
This command was integrated into Cisco IOS Release 12.2(27)SBC.
|
Examples
The following is sample output from the show ip msdp summary command:
Router# show ip msdp summary
Peer Address AS State Uptime/ Reset SA Peer Name
224.135.250.116 109 Up 1d10h 9 111 rtp5-rp1
*172.20.240.253 1239 Up 14:24:00 5 4010 sl-rp-stk
172.16.253.19 109 Up 12:36:17 5 10 shinjuku-rp1
172.16.170.110 109 Up 1d11h 9 12 ams-rp1
Table 34 describes the significant fields shown in the display.
Table 34 show ip msdp summary Field Descriptions
Field
|
Description
|
Peer Address
|
IP address of the MSDP peer.
|
AS
|
Autonomous system to which the MSDP peer belongs.
|
State
|
State of the MSDP peer.
|
Uptime/Downtime
|
Days and hours the MSDP peer is up or down, per state shown in the previous column. If the time is less than 24 hours, it is shown in terms of hours:minutes:seconds.
|
SA Count
|
Number of SA messages from this MSDP peer in the SA cache.
|
Peer Name
|
Name of the MSDP peer.
|
show ip multicast
To display information about IP multicast global configuration parameters, use the show ip multicast command in user EXEC or privileged EXEC mode.
show ip multicast [vrf vrf-name]
Syntax Description
vrf vrf-name
|
(Optional) Restricts the output to displaying IP multicast global configuration parameters associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified by the vrf-name argument.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.3(14)T
|
This command was introduced.
|
12.2(33)ZW
|
This command was integrated into Cisco IOS Release 12.2(33)ZW.
|
12.2(33)SRB
|
This command was integrated into Cisco IOS Release 12.2(33)SRB.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Examples
The following is sample output from the show ip multicast command. The output is self-explanatory.
Router# show ip multicast
Multicast Routing: enabled
Multicast Multipath: disabled
Multicast Route limit: No limit
Multicast Triggered RPF check: enabled
Multicast Fallback group mode: Dense
Table 35 describes the fields shown in the display.
Table 35 show ip multicast Field Descriptions
Field
|
Description
|
Multicast routing:
|
Indicates whether multicast routing has been enabled or disabled (using the ip multicast-routing command).
|
Multicast multipath:
|
Indicates whether multicast load splitting has been enabled or disabled (using the ip multicast multipath command) and displays what hash algorithm is configured for load splitting IP multicast traffic (when multicast load splitting has been enabled).
|
Multicast Route limit:
|
Displays the limit configured for the ip multicast route-limit command.
|
Multicast Triggered RPF check:
|
Indicates whether RPF triggered RPF checks have been enabled (the default) or disabled (using the no ip multicast rpf backoff command)
|
Multicast Fallback group mode:
|
Indicates the multicast fallback group mode (dense or sparse) in use (configured with the ip pim dm-fallback command). The default is dense mode.
|
Related Commands
Command
|
Description
|
ip multicast-routing
|
Enables IP multicast routing.
|
ip multicast multipath
|
Enables load splitting of IP multicast traffic over ECMP.
|
ip multicast route-limit
|
Limits the number of mroutes that can be added to a multicast routing table.
|
ip multicast rpf backoff
|
Configures the intervals at which PIM RPF failover will be triggered by changes in the routing tables.
|
ip pim dm-fallback
|
Enables PIM-DM fallback.
|
show ip multicast interface
To display information about IP multicast interface configuration parameters and packet counters, use the show ip multicast interface command in user EXEC or privileged EXEC mode.
show ip multicast [vrf vrf-name] interface [type number]
Syntax Description
vrf vrf-name
|
(Optional) Restricts the output to displaying information about multicast-enabled interfaces associated with the Multicast Virtual Private Network (MVPN) routing and forwarding (MVRF) instance specified by the vrf-name argument.
|
type number
|
(Optional) Interface type and number for which to display IP multicast interface-specific configuration paratemeters and packets counters.
|
Command Default
If no optional arguments and keywords are specified, this command will display IP multicast configuration parameters and packet counters for all multicast-enabled interfaces.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.3(14)T
|
This command was introduced.
|
12.2(33)ZW
|
This command was integrated into Cisco IOS Release 12.2(33)ZW.
|
12.2(33)SRB
|
This command was integrated into Cisco IOS Release 12.2(33)SRB.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Examples
The following is sample output from the show ip multicast interface command with type number arguments:
Router# show ip multicast interface fastethernet 1/0
FastEthernet1/0 is up, line protocol is up
Internet address is 10.1.1.1/24
Multicast routing: enabled
Multicast switching: fast
Multicast packets in/out: 0/0
Multicast boundary: test (in/out)
Multicast Tagswitching: disabled
Multicast TTL threshold: 0
Multicast Tagswitching: disabled
Table 36 describes the fields shown in the display.
Table 36 show ip multicast interface Field Descriptions
Field
|
Description
|
<interface type> <interface number> is
|
Indicates the state of the multicast-enabled interface (up or down).
|
line protocol is
|
Indicates whether the software processes that handle the line protocol consider the line usable or if it has been taken down by an administrator.
|
IP address is
|
IP address configured for the interface (using the ip address command)
|
Multicast routing:
|
Indicates whether multicast routing (Protocol Independent Multicast [PIM]) has been enabled or disabled on the interface (using the ip pim command).
|
Multicast switching:
|
Indicates the type of multicast switching operating on the interface (as configured with the ip mroute-cache command).
Note In Cisco IOS Releases that support the IPv4 MFIB, the ip mroute-cache command has been removed and this field will always display "fast" in the output.
|
Multicast packets in/out:
|
Displays multicast packet counters.
Note These counters are also displayed in the output of the show ip pim interface command.
|
Multicast boundary:
|
Indicates the multicast boundary configured on an interface (using the ip multicast boundary command).
Note If no IP multicast boundaries are configured on the interface, this field will not be displayed in the output.
|
Multicast TTL threshold:
|
Indicates the time-to-live (TTL) threshold of multicast packets being forwarded out an interface (as configured with the ip multicast ttl-threshold command).
Note This field is obsolete in Cisco IOS Releases that support the IPv4 MFIB. For those releases, the ip multicast ttl-threshold command has been removed and this field will always "0" in the output.
|
Multicast Tagswitching:
|
This field is obsolete. It will always display "Disabled" in the output.
|
Related Commands
Command
|
Description
|
ip pim
|
Enables PIM on an interface.
|
ip mroute-cache
|
Configures IP multicast fast or distributed switching on interface.
|
ip multicast boundary
|
Configures an administratively scoped IPv4 multicast boundary on an interface.
|
ip multicast ttl-threshold
|
Configures the TTL threshold of multicast packets being forwarded out an interface.
|
show ip pim interface
|
Displays information about interfaces configured for PIM.
|
show ip multicast redundancy state
To display information about the current redundancy state for IP multicast, use the show ip multicast redundancy state command in user EXEC or privileged EXEC mode.
Syntax for the Catalyst 6500 Series Switch in Cisco IOS Release 12.2(33)SXI and Later Releases
show ip multicast redundancy state
Syntax for the Cisco 7600 Series Router in Cisco IOS Release 12.2(33)SRE and Later Releases
Syntax for the Cisco 7600 Series Router in Cisco IOS Release 15.0(1)S and Later Releases
show ip multicast redundancy state [verbose]
Syntax Description
verbose
|
(Optional) Displays additional information about the In Service Software Upgrade (ISSU) negotiation status for each defined IP multicast synchronization message type.
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.2(33)SXI
|
This command was introduced.
|
12.2(33)SRE
|
This command was modified. The verbose keyword was added, and new output fields were added to display ISSU status information.
|
Cisco IOS XE Release 2.6
|
This command was integrated into Cisco IOS XE Release 2.6.
|
15.0(1)S
|
This command was integrated into Cisco IOS Release 15.0(1)S.
|
Usage Guidelines
Use this command to display the current IP multicast redundancy state of the Route Processors (RPs). The output displays information about the current multicast redundancy state of the RPs and the current synchronization state of the standby RP.
Examples
The following is sample output from the show ip multicast redundancy state command from a Catalyst 6500 series switch running Cisco IOS Release 12.2(33)SXI:
Router# show ip multicast redundancy state
Multicast Redundancy state: SSO
Sync message sequence number: 11
Stale NSF state flush timeout: 30000 ms
Current sync state: Synched
Table 37 describes the fields shown in the display.
Table 37 show ip multicast redundancy state Field Descriptions
Field
|
Description
|
Multicast Redundancy state:
|
Indicates the current redundancy state of the RPs.
|
Sync message epoch:
|
Internal qualifier for the synchronization message sequence number.
|
Sync message sequence number:
|
Internal sequence number assigned to a synchronization message within a synchronization message epoch.
|
Stale NSF state flush timeout:
|
Indicates the nonstop forwarding (NSF) state flush timeout period.
Note In the event of an RP switchover, this timeout period occurs after unicast and multicast reconvergence. The timeout period is the delay between the downloading of refreshed multicast control plane route information to the forwarding plane and the flushing of stale NSF forwarding plane information that was retained from before the RP switchover. The default timeout period is 30,000 milliseconds (ms). Use the ip multicast redundancy routeflush maxtime command to configure an additional timeout period before stale forwarding plane multicast routing (mroute) information is flushed.
|
Current sync state:
|
Current synchronization state of the standby RP.
|
The following is sample output from the show ip multicast redundancy state command from a Cisco 7600 series router running Cisco IOS Release 12.2(33)SRE:
Router# show ip multicast redundancy state
Multicast IPv4 Redundancy Mode: SSO
Multicast IPv6 Redundancy Mode: Not enabled
Multicast IPv4 HA state machine status: Idle
Multicast IPv6 HA state machine status: Idle
Sync message sequence number: 21
Stale NSF state flush timeout: 30000 ms
Current sync state: Synched
Multicast ISSU Client Status:
PIM MIC client ISSU compatible
MRIB MIC client ISSU compatible
MFIB IPv4 MIC client ISSU compatible
MFIB IPv6 MIC client No ISSU result reported
PLATFORM IPv4 MIC client Unregistered - ignored
PLATFORM IPv6 MIC client Unregistered - ignored
IPv4 SSO supported for: PIM, MRIB, MFIBV4
IPv6 SSO blocked by: MFIBV6
The following is sample output from the show ip multicast redundancy state command with the verbose keyword from a Cisco 7600 series router running Cisco IOS Release 12.2(33)SRE:
Router# show ip multicast redundancy state verbose
Multicast IPv4 Redundancy Mode: SSO
Multicast IPv6 Redundancy Mode: Not enabled
Multicast IPv4 HA state machine status: Idle
Multicast IPv6 HA state machine status: Idle
Sync message sequence number: 21
Stale NSF state flush timeout: 30000 ms
Current sync state: Synched
Multicast ISSU Client Status:
PIM MIC client ISSU compatible
MRIB MIC client ISSU compatible
MFIB IPv4 MIC client ISSU compatible
MFIB IPv6 MIC client No ISSU result reported
PLATFORM IPv4 MIC client Unregistered - ignored
PLATFORM IPv6 MIC client Unregistered - ignored
IPv4 SSO supported for: PIM, MRIB, MFIBV4
IPv6 SSO blocked by: MFIBV6
Multicast ISSU sync message status
SYNC_RP_MAPPING : Compatible
SYNC_RP_ROUTE : Compatible
SYNC_AUTORP_DISCOV_IDB : Compatible
SYNC_MDT_TUNNEL : Compatible
SYNC_REG_TUNNEL : Compatible
SYNC_MCAC_RSV : Compatible
SYNC_MDT_DATA_RCV : Compatible
SYNC_MDT_DATA_SND : Compatible
SYNC_MDT_DATA_RCV_DECAP : Compatible
SYNC_LSP_VIF : Compatible
Table 38 describes the significant fields shown in the display.
Table 38 show ip multicast redundancy state Field Descriptions
Field
|
Description
|
Multicast IPv4 Redundancy Mode:
|
Indicates the current redundancy mode in operation for IPv4 multicast.
|
Multicast IPv6 Redundancy Mode:
|
Indicates the current redundancy mode in operation for IPv6 multicast.
|
Multicast IPv4 HA state machine status:
|
Provides the status of IPv4 high availability (HA) state machine events.
Note This status is displayed only on the active RP.
Possible state machine status values are as follows:
•DDE replaying
•Flush pending
•Idle
•Not enabled
•NSF hold-off extending
•Unicast converging
Following an RP switchover, the multicast NSF HA state machine is enabled under the following conditions:
•The system is configured to be in stateful switchover (SSO) mode.
•All registered IPv4 multicast software components (Protocol Independent Multicast [PIM], Multicast Routing Information Base [MRIB], Multicast Forwarding Information Base [MFIB], and, on applicable router types, the platform multicast driver software) have successfully completed ISSU negotiation with their peer on the "old" active RP before the RP switchover occurred.
•Multicast routing is configured for the default multicast routing table or for one or more nondefault multicast routing tables (for example, VPN routing and forwarding [VRF] instances).
If the multicast IPv4 HA state machine is not enabled, the state machine status displayed is "Not enabled."
|
| |
If the multicast IPv4 HA state machine is enabled, the state machine status progresses through the following states after a switchover occurs:
•Unicast converging—Indicates that this RP is gathering updated multicast and unicast routing information from neighboring routers and hosts for one or more IPv4 multicast routing tables. This phase of the state machine must complete before the next phase, data driven events (DDE) replay, can begin.
•DDE replaying—Indicates that this RP is incorporating synched MFIB state information for multicast (S,G) routes that were created before the switchover by DDEs into the multicast routing table. This information is being incorporated for one or more IPv4 multicast routing tables.
|
|
| |
Multicast routes learned via DDEs cannot be learned from neighboring PIM routers or hosts and are, instead, synched by the MFIB during steady state operation in order to enable data flow continuity through an SSO switchover.
DDEs comprise one of the two following types:
–Initial start of data flow from a directly connected data source (host) that is detected on a "first hop" router.
–Shortest path tree (SPT) switchover at a "last hop" router that is triggered by multicast data packets received via a (*, G) multicast route from a given source "S" and sent to an Internet Group Management Protocol (IGMP) host that has requested reception of packets from a multicast group address "G."
|
| |
•NSF hold-off extending—Indicates that after completion of DDE replay, an additional NSF hold-off delay was requested by the platform multicast driver software for one or more IPv4 multicast routing tables. The hold-off period will continue until it is either released by the platform multicast driver software or until the maximum allowable hold-off time has elapsed. This phase of the HA state machine is optional and occurs only when required for correct serialization of platform multicast driver software databases during initial postswitchover processing.
|
| |
•Flush pending—Indicates that the multicast HA state machine is waiting for the hold-off period to flush "stale" multicast data plane forwarding state.
After the hold-time period ends (the period when the current converged multicast routing control plane state is downloaded to the multicast data plane software and hardware), a "flush" is performed to delete any multicast forwarding state that was previously stored in the data plane (through synching from the "old" active RP during steady state operation) that has not been "refreshed" by matching state from the reconverged post failover routing information in the multicast control plane. A fixed time delay is observed between the termination of the hold-off period and the flushing of stale multicast data plane forwarding state.
|
| |
•Idle—Indicates that the multicast HA state machine has completed its progression through all state machine phases for all IPv4 multicast routing tables. Following the flushing of stale multicast data plane state, normal multicast route and forwarding state maintenance has resumed.
|
Multicast IPv6 HA state machine status:
|
Provides the status of IPv6 HA state machine events.
Note This status is displayed only on the active RP.
The field descriptions for the IPv6 HA state machine are nearly the same as for the IPv4 HA state machine; therefore, you can apply the field descriptions from the IPv4 HA state machine, substituting IPv6 for IPv4.
The one exception is that the conditions for enabling the IPv6 HA state machine are slightly different (because the Multicast VPN feature is not supported for the IPv6 address family). The conditions required for enabling the IPv6 multicast HA state machine are, therefore, as follows:
•The system is configured to be in SSO mode
•All registered IPv6 multicast software components (PIM, MRIB, MFIB, and, on applicable router types, the platform multicast driver software) have successfully completed ISSU negotiation with their peer on the "old" active RP before the RP switchover occurred.
•Multicast routing is configured for the IPv6 multicast address family.
|
Sync message epoch:
|
Internal qualifier for the synchronization message sequence number.
|
Sync message sequence number:
|
Internal sequence number assigned to a synchronization message within a synchronization message epoch.
|
Stale NSF state flush timeout:
|
Indicates the NSF state flush timeout period.
Note In the event of an RP switchover, this timeout period occurs after unicast and multicast reconvergence. The timeout period is the delay between the downloading of refreshed multicast control plane route information to the forwarding plane and the flushing of stale NSF forwarding plane information that was retained from before the RP switchover. The default timeout period is 30,000 ms. Use the ip multicast redundancy routeflush maxtime command to configure an additional timeout period before stale forwarding plane mroute information is flushed.
|
Current sync state:
|
Current synchronization state of the standby RP.
|
Multicast ISSU Client Status:
|
Provides status on the various ISSU clients.
Multicast requires participation from multiple software components, each of which require their own communication channel to the standby RP. ISSU client status tracks ISSU negotiation state for each of these components.
|
Multicast ISSU sync message status:
|
Provides the status of ISSU synchronization messages.
For each type of internal multicast forwarding database, ISSU requires agreement from the active and standby peers on which message version will be used. These outputs show that the negotiation completion status for each of the synched database types.
|
Related Commands
Command
|
Description
|
debug ip multicast redundancy
|
Displays information about IP multicast redundancy events.
|
ip multicast redundancy routeflush maxtime
|
Configures an additional timeout period before stale forwarding plane mroute information is flushed following an RP switchover.
|
show ip multicast redundancy statistics
|
Displays IP multicast redundancy statistics.
|
show ip multicast redundancy statistics
To display IP multicast redundancy statistics, use the show ip multicast redundancy statistics command in user EXEC or privileged EXEC mode.
show ip multicast redundancy statistics
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.2(33)SXI
|
This command was introduced.
|
12.2(33)SRE
|
This command was integrated into Cisco IOS Release 12.2(33)SRE.
|
Cisco IOS XE Release 2.6
|
This command was integrated into Cisco IOS XE Release 2.6.
|
15.0(1)S
|
This command was integrated into Cisco IOS Release 15.0(1)S.
|
Usage Guidelines
Use the show ip multicast redundancy statistics command to display IP multicast redundancy statistics. The output displays the following information:
•A summary statistic showing the current number of synchronization messages awaiting transmission from the active Route Processor (RP) to the standby RP. (This count is summed across all synchronization database types.)
•A summary statistic showing the current number of synchronization messages that have been sent from the active RP to the standby RP, but for which the active RP has not yet received acknowledg ment from the standby for successful reception. (This count is summed across all synchronization database types.)
•The last two statistics, displaying the count of messages awaiting transmission or acknowledgement, provide a way to measure the load on the internal synchronization message sending mechanism.
Use the clear ip multicast redundancy statistics command to reset IP multicast redundancy statistics.
Examples
The following is sample output from the show ip multicast redundancy statistics command:
mcast-iouha-1# show ip multicast redundancy statistics
Multicast Redundancy Statistics
Sync Type Updates Syncs Sync failures
Bidir. RP route info 0 0 0
Autorp discovery IDB 0 0 0
PIM register tunnel 0 0 0
Data MDT receive decap 0 0 0
Requests Awaiting Sync Msg Transmission: 0
Requests Awaiting Sync Msg Acknowledgement: 0
Table 39 describes the significant fields shown in the display.
Table 39 show ip multicast redundancy statistics Field Descriptions
Field
|
Description
|
Sync Type
|
Displays statistics about the internal multicast forwarding databases that are synchronized between the active and standby RP.
The following internal multicast forwarding databases are synchronized between the active and standby RPs:
•RP mapping—Internal database that stores group-to-RP mapping information.
•Bidirectional (bidir) RP route info—Internal database that stores bidir-Protocol Independent Multicast (PIM) RP route information.
•Bootstrap cache—Internal database that stores bootstrap router (BSR) candidate information.
•AutoRP discovery IDB—Internal database that stores the identity of the interface chosen on the active RP for use as the source interface for AutoRP discovery messages.
•RPDF—Internal database that stores bidir-PIM designated forwarder (DF) information.
•MDT tunnel—Internal database that stores MVPN Multicast Distribution Tree (MDT) tunnel information.
•PIM register tunnel—Internal database that stores Protocol Independent Multicast (PIM) register tunnel information.
•MCAC Reservation—Internal database that stores the identity of IPv6 (S, G) multicast routes for which a multicast Call Admission Control (MCAC) cost is currently accrued for each interface on the active RP. Retention of this information on the standby RP enables that RP, on becoming the new active RP during an RP switchover, to reserve MCAC bandwidth for these multicast routes during the initial post switchover multicast state reconvergence period, which, therefore, enables continuity of these multicast data streams through an RP switchover.
|
|
Updates
|
Tracks the number of updates that required standby RP synchronization for each of the internal multicast forwarding databases.
If the number of updates displayed under the "Updates" column for an internal multicast forwarding database matches the number of synchronizations displayed under the "Syncs" column, it can be inferred that the standby RP is currently synchronized.
Note Over time, however, the number of updates for a given multicast forwarding database is expected to exceed the number of synchronizations. In normal operating conditions, this disparity is usually due to update bundling: when several updates are sent simultaneously (or within a relatively short period of time), the Cisco IOS software will bundle the updates when synchronizing data on the standby RP.
Note If the number of updates exceeds the number of synchronizations because of a synchronization failure, then the number displayed under "Sync failures" will also increment.
|
Syncs
|
Number of times that the data for a given internal multicast forwarding database has been synchronized on the standby RP.
|
Sync failures
|
Number of times that synchronization of data for a given internal multicast forwarding database failed on the standby RP.
Tip The show ip multicast redundancy state command can be used to determine the synchronization state after a synchronization failure. When the standby RP has been resynchronized after a failure, the current state shown in the "Current sync state" field will display "Synched."
Note An alternative way to determine whether the standby RP has been resynchronized is to examine the "Requests Awaiting Sync Msg Transmission" and the "Requests Awaiting Sync Msg Acknowledgement" fields. The value displayed for these fields will normally be zero (except in situations where the system is under heavy load). In the event of a synchronization failure, the number of synchronization message requests for updates awaiting transmission and acknowledgment will begin accumulating in the queue; the values displayed for those fields, thus, will increment accordingly. After the standby RP recovers from the failure and resynchronizes, the value displayed for those fields will return to zero.
|
Requests Awaiting Sync Msg Transmission:
|
Synchronization message requests that are in the queue for transmission from the active RP to the standby RP.
|
Requests Awaiting Sync Msg Acknowledgement:
|
Synchronization message requests that are in transit awaiting acknowledgment from the standby RP.
|
Average Sync Wait Time =
|
Displays the average time, in milliseconds (ms), that a synchronization message request for an update waits in the queue before being sent to the standby RP.
Note Both this field and the "Average Sync Ack Time =" field can be interpreted as a measure of how heavy the load is on the synchronization message sending mechanism. The average wait time for a synchronization message request in the queue will generally be short (even on a heavily loaded system). On a lightly loaded system, the value displayed for this field may even appear as 0 ms (when the wait time is less than half of a millisecond, the system will round down to zero).
|
Average Sync Ack Time =
|
Displays the average round-trip time of synchronization message requests for updates, in milliseconds (ms). The average for the round-trip time is based on the time between when messages are sent to the standby RP for acknowledgment to the time at which the active RP receives acknowledgments from the standby RP for those messages.
Note The average time that is displayed for this field will always be higher than the average time displayed for the "Average Sync Wait Time" field; however—even on a heavily loaded system—the average time displayed for this field will generally be short.
|
Related Commands
Command
|
Description
|
clear ip multicast redundancy statistics
|
Resets IP multicast redundancy statistics.
|
debug ip multicast redundancy
|
Displays information about IP multicast redundancy events.
|
show ip multicast rpf tracked
Note The show ip multicast rpf tracked command is not available in Cisco IOS Release 15.0(1)S2 and later Cisco IOS 15.0S releases.
To display IP multicast Return Path Forwarding (RPF) tracked information, use the show ip multicast rpf tracked command in user EXEC or privileged EXEC mode.
show ip multicast rpf tracked
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.2(33)SRB
|
This command was introduced.
|
15.0(1)M
|
This command was integrated into Cisco IOS Release 15.0(1)M.
|
15.0(1)S2
|
This command was removed. It is not available in Cisco IOS Release 15.0(1)S2 and later Cisco IOS 15.0S releases.
|
Examples
The following is sample output from the show ip multicast rpf tracked command.
Router# show ip multicast rpf tracked
RPF neighbor: ? (10.0.10.2)
RPF route/mask: 10.0.33.0/16
RPF type: unicast (eigrp 1)
Related Commands
Command
|
Description
|
debug ip multicast rpf tracked
|
Displays information about IP multicast rpf tracked events.
|
show ip multicast topology
To display multicast topology information, use the show ip multicast topology command in user EXEC or privileged EXEC mode.
show ip multicast topology [{multicast | unicast} topology-name]
Syntax Description
multicast topology-name
|
(Optional) Displays information about the specified multicast topology instance.
|
unicast topology-name
|
(Optional) Displays information about the specified unicast topology instance.
|
Command Default
Information about all topology instances is displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
Cisco IOS XE Release 3.2S
|
This command was introduced.
|
Usage Guidelines
This command displays topology information for multicast streams that are configured to support the Multicast Live-Live feature. This feature delivers two multicast streams with the same content over diverse paths in the network. This functionality reduces packet loss due to network failures on any one of the paths.
Examples
The following is sample output from the show ip multicast topology command:
Router# show ip multicast topology multicast live-A
Topology: ipv4 multicast live-A
Associated VPN VRF is IPv4 default
Table 40 describes the fields shown in the display.
Table 40 show ip multicast topology Field Descriptions
Field
|
Description
|
Topology
|
The multicast data stream topology instance whose information is being displayed.
|
TID
|
The identity of the topology instance.
|
Extended IP ACL
|
The IP access list that is associated with the topology instance.
|
Associated VPN VRF
|
The Virtual Private Network (VPN) Virtual Routing and Forwarding (VRF) instance that is associated with the topology instance.
|
Related Commands
Command
|
Description
|
debug ip multicast topology
|
Enables debugging output for IP multicast stream topology creation events, deletion events, and IP multicast stream ACL matching events.
|
ip multicast rpf select topology
|
Associates a multicast topology with a multicast group with a specific mroute entry.
|
ip multicast topology
|
Configures topology selection for multicast streams.
|
show ip pgm host defaults
Note Support for the PGM Host feature has been removed. Use of this command is not recommended.
To display the default values for Pragmatic General Multicast (PGM) Host traffic, use the show ip pgm host defaults command in user EXEC or privileged EXEC mode.
show ip pgm host defaults
Syntax Description
This command has no arguments or keywords.
Defaults
No default behavior or values
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.1(1)T
|
This command was introduced.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
The default values displayed in the show ip pgm host defaults command output are applied to every new host connection that is opened.
Examples
The following is sample output from the show ip pgm host defaults user EXEC command:
Router> show ip pgm host defaults
Source Session Default Values :
spm-ambient-ivl (6000), txw-adv-secs (6000)
txw-adv-timeout-max (3600000), txw-rte (16384), txw-secs (30000)
ncf-max (infinite), spm-rpt-ivl (3000), ihb-min (1000)
ihb-max (10000), join (0), tpdu-size (16384)
txw-adv-method (time), tx-buffer-mgmt (return)
Receiver Session Default Values :
nak-gen-ivl (60000), nak-rb-ivl (500), nak-rdata-ivl (2000)
nak-rpt-ivl (2000), rx-buffer-mgmt (minimum), rx-local-retrans (none)
stream-type (apdu), ttl (255)
Address used to source packets:(10.1.1.1)
Table 41 describes the fields and default values in the sample output.
Table 41 show ip pgm host defaults Field Descriptions
Field
|
Description
|
Source Session Default Values
|
Displays the values for source-specific PGM Host traffic defaults.
|
spm-ambient-ivl (6000)
|
Amount of time, in milliseconds, the PGM Host waits for a PGM source path message (SPM) ambient data packet. The default is 6000 ms.
|
txw-adv-secs (6000)
|
Amount of time, in milliseconds, of the advanced transmit window for the PGM Host. The default is 6000 ms.
|
txw-adv-timeout-max (3600000)
|
Amount of time, in milliseconds, the PGM Host waits for data packets, even if the PGM Host receives PGM NAK data packets. The default is 3600000 ms.
|
txw-rte (16384)
|
The data transmit rate, in bytes-per-second, for the PGM Host. The default is 16384 bytes per second.
|
txw-secs (30000)
|
Data transmit window size, in milliseconds, for the PGM Host. The default is 30000 ms.
|
ncf-max (infinite)
|
Maximum number of PGM NAK confirmation data packets (NAK NCFs), in packets per second, the PGM Host sends per second. The default is infinite.
|
spm-rpt-ivl (3000)
|
Amount of time, in milliseconds, the PGM Host waits for a PGM SPM repeat data packet. The default is 3000 ms.
|
ihb-min (1000)
|
SPM interheartbeat timer minimum, in milliseconds. The default is 1000 ms.
|
ihb-max (10000)
|
SPM interheartbeat timer maximum, in milliseconds. The default is 10000 milliseconds (ms).
|
join (0)
|
Amount of time, in milliseconds, the PGM Host waits, when running in router mode, for client requests. The default is 0 ms.
|
tpdu-size (16384)
|
Size of the source transport data unit (TPDU) for the PGM Host. The available range is 41 through 16384 bytes. The default is 1400 bytes.
|
tx-adv-method (time)
|
Type of advanced transmit window method (data or time) for the PGM Host. The default is time.
|
tx-buffer-mgmt (return)
|
Type of transmit data buffers (keep or return) for the PGM Host. The default is return.
|
Receiver Session Default Values
|
Displays the values for receiver-specific PGM Host traffic defaults.
|
nak-gen-ivl (60000)
|
Amount of time, in milliseconds, the PGM Host waits for a PGM negative acknowledgment (NAK) data packet. The default is 60000 ms.
|
nak-rb-ivl (500)
|
Amount of time, in milliseconds, the PGM Host waits before sending a PGM NAK data packet. The default is 500 ms.
|
nak-rdata-ivl (2000)
|
Amount of time, in milliseconds, the PGM Host waits for a re-sent PGM NAK (NAK RDATA) data packet. The default is 2000 ms.
|
nak-rpt-ivl (2000)
|
Amount of time, in milliseconds, the PGM Host waits for a PGM NAK confirmation (NAK NCF) data packet. The default is 2000 ms.
|
rx-buffer-mgmt (minimum)
|
Type of receive data buffers (full or minimum) for the PGM Host. The default is minimum.
|
rx-local-retrans (none)
|
Specifies whether a receiver has to do local retransmissions or not if it sees NAKs.
|
Common Default Values
|
Displays the values for PGM Host traffic defaults that are common between a source and a receiver.
|
stream-type (apdu)
|
Data stream type (apdu or byte) for the PGM Host. The default is apdu.
|
ttl (255)
|
Time-to-live (TTL) value on the PGM Host for sent multicast data packets. The default is 255 hops. The TTL value for a packet is decremented by 1 as the packet passes through a router.
|
Address used to source packets
|
The unicast IP address that the virtual host is using to originate PGM packets.
|
Related Commands
Command
|
Description
|
clear ip pgm host
|
Resets PGM Host connections to their default values and clears traffic statistics.
|
ip pgm host
|
Enables PGM Host.
|
show ip pgm host sessions
|
Displays open PGM Host traffic sessions.
|
show ip pgm host traffic
|
Displays PGM Host traffic statistics.
|
show ip pgm host sessions
Note Support for the PGM Host feature has been removed. Use of this command is not recommended.
To display open Pragmatic General Multicast (PGM) Host traffic sessions, use the show ip pgm host sessions command in user EXEC or privileged EXEC mode.
show ip pgm host sessions [session-number | group-address]
Syntax Description
session-number
|
(Optional) PGM Host traffic session number.
|
group-address
|
(Optional) PGM Host multicast group address.
|
Defaults
No default behavior or values
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.1(1)T
|
This command was introduced.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
If a session number or multicast group address is not specified, all open traffic sessions are displayed.
Examples
The following user EXEC example shows all open traffic sessions:
Router> show ip pgm host sessions
Idx GSI Source Port Type State Dest Port Mcast Address
1 000000000000 0 receiver listen 48059 224.3.3.3
2 9CD72EF099FA 1025 source conn 48059 224.1.1.1
The following user EXEC example shows traffic information for traffic session number 2:
Router> show ip pgm host sessions 2
Idx GSI Source Port Type State Dest Port Mcast Address
2 9CD72EF099FA 1025 source conn 48059 224.1.1.1
stream-type (apdu), ttl (255)
spm-ambient-ivl (6000), txw-adv-secs (6000)
txw-adv-timeout-max (3600000), txw-rte (16384), txw-secs (30000)
ncf-max (infinite), spm-rpt-ivl (3000), ihb-min (1000)
ihb-max (10000), join (0), tpdu-size (16384)
txw-adv-method (time), tx-buffer-mgmt (return)
APDU transmit memory errors 0
packets received in error 0
The following user EXEC example shows traffic information for multicast group address 244.1.1.1:
Router> show ip pgm host sessions 244.1.1.1
Idx GSI Source Port Type State Dest Port Mcast Address
2 9CD72EF099FA 1025 source conn 48059 224.1.1.1
stream-type (apdu), ttl (255)
spm-ambient-ivl (6000), txw-adv-secs (6000)
txw-adv-timeout-max (3600000), txw-rte (16384), txw-secs (30000)
ncf-max (infinite), spm-rpt-ivl (3000), ihb-min (1000)
ihb-max (10000), join (0), tpdu-size (16384)
txw-adv-method (time), tx-buffer-mgmt (return)
APDU transmit memory errors 0
packets received in error 0
Table 42 describes the significant fields shown in the displays.
Table 42 show ip pgm host sessions Field Descriptions
Field
|
Description
|
Idx
|
The local index for the traffic session.
|
GSI
|
The global source identifier for the traffic session.
|
Source Port
|
The source port for the traffic session.
|
Type
|
Source or receiver session.
|
State
|
The state of the session. For example, connected or listening.
|
Dest Port
|
The destination port for the traffic session.
|
Mcast Address
|
The IP multicast address for the traffic session.
|
ODATA
|
Normal data packet.
|
RDATA
|
Re-sent data packet.
|
ADPUs
|
Application data units.
|
SPM
|
Source path message.
|
NCF
|
Negative acknowledgment (NAK) confirmation packet.
|
NAK
|
NAK packet.
|
Related Commands
Command
|
Description
|
clear ip pgm host
|
Resets PGM Host connections to their default values and clears traffic statistics.
|
ip pgm host
|
Enables PGM Host.
|
show ip pgm host defaults
|
Displays the default values for PGM Host traffic.
|
show ip pgm host traffic
|
Displays PGM Host traffic statistics.
|
show ip pgm host traffic
Note Support for the PGM Host feature has been removed. Use of this command is not recommended.
To display Pragmatic General Multicast (PGM) Host traffic statistics, use the show ip pgm host traffic command in user EXEC or privileged EXEC mode.
show ip pgm host traffic
Syntax Description
This command has no arguments or keywords.
Defaults
No default behavior or values
Command Modes
User EXEC
Privileged EXEC
Command History
Release
|
Modification
|
12.1(1)T
|
This command was introduced.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Usage Guidelines
Use this command to display traffic statistics at the PGM transport layer.
Examples
The following is sample output from the show ip pgm host traffic user EXEC command:
Router> show ip pgm host traffic
APDU transmit memory errors 0
packets received in error 0
packets received in error 0
packets received in error 0
Total valid bytes received 0
Total bytes received in error 0
packets received in error 0
packets received in error 0
packets received in error 0
Table 43 describes the significant fields shown in the display.
Table 43 show ip pgm host traffic Field Descriptions
Field
|
Description
|
General Statistics
|
Displays statistics that relate to both the traffic source and the receiver.
|
Source Statistics
|
Displays statistics that relate to the traffic source.
|
Receiver Statistics
|
Displays statistics that relate to the traffic receiver.
|
Related Commands
Command
|
Description
|
clear ip pgm host
|
Resets PGM Host connections to their default values and clears traffic statistics.
|
ip pgm host
|
Enables PGM Host.
|
show ip pgm host defaults
|
Displays the default values for PGM Host traffic.
|
show ip pgm host sessions
|
Displays open PGM Host traffic sessions.
|
show ip pgm router
To display Pragmatic General Multicast (PGM) Reliable Transport Protocol state and statistics, use the show ip pgm router command in user EXEC or privileged EXEC mode.
show ip pgm router [interface [interface-type interface-number] | state [group-address] | [traffic
[interface-type interface-number]] [verbose]
Syntax Description
interface [interface-type interface-number]
|
(Optional) Displays interfaces on which PGM Router Assist is configured.
|
state [group-address]
|
(Optional) Displays designated local repairer (DLR) information and PGM resend state information per transport session identifier (TSI). If no group address is specified, resend state for all groups is shown.
|
traffic [interface-type interface-number]
|
(Optional) Displays PGM packet counters. If no interface type and number are specified, traffic on all interfaces is displayed. These statistics do not reflect the number of PGM data packets (ODATA) that are forwarded in a session, because these are forwarded transparently by IP multicast.
Note The traffic keyword will display statistics for the POLRs, NAKs, RDATA that will differentiate if they are taken from the off-tree DLR (or the upstream DLR in some cases). POLLs have rows for POLLs received and POLLs discarded. In the case of POLLs for off-tree DLR discovery, the packets are discarded and are accounted for in the POLLs discarded row.
|
verbose
|
(Optional) Displays extended information about outgoing interface lists, timers, and Forward Error Connections (FECs).
|
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
|
Modification
|
12.0(5)T
|
This command was introduced.
|
12.2(13)T
|
The output display for this command was updated to include DLR information.
|
12.2(33)SRA
|
This command was integrated into Cisco IOS Release 12.2(33)SRA.
|
12.2SX
|
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
|
Examples
The following is sample output from the show ip pgm router command with the interface keyword:
Router# show ip pgm router interface
10.1.0.2 Ethernet1/0/0 (measured drop rate 0%)
10.3.0.2 Ethernet1/0/4 (measured drop rate 0%)
Table 44 describes the significant fields shown in the display.
Table 44 show ip pgm router Field Descriptions
Field
|
Description
|
Address
|
IP address of the interface running PGM Router Assist.
|
Interface
|
Interface type and number on the router that is running PGM Router Assist, plus the drop rate measured on the interface.
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The following is sample output from the show ip pgm router command with the traffic keyword. An RDATA fragment is a part of an RDATA packet that has been fragmented at the IP layer while in transit. The PGM network element has seen two RDATA packets that were each fragmented into three IP fragments.
Router# show ip pgm router traffic
The following is sample output from the show ip pgm router command with the state and verbose keywords. The timer associated with each session is an idle timer; the TSI state is deleted when this timer expires. The measured loss rates are indicated as follows:
•link_lr: worst reported link loss rate
•path_lr: worst reported path loss rate
•receiver_lr: worst reported receiver loss rate
•cr_lead: sequence number associated with worst receiver loss rate
•cr_worst_rec: IP address that reported worst loss rate
Router# show ip pgm router state verbose
TSI Group Neighbor TGSIZE
0A0700C85555-1000 227.7.7.7 rpf/source N/A 00:04:25
(link_lr 7%, path_lr 4%, receiver_lr 10%
cr_lead 6256421, cr_worst_rec 134.45.0.126)
The following sample output shows state after receivers have reported loss of certain packets. Negative acknowledgments (NAKs) have been received for each of the two sessions in the previous example. After the loss, the router has state for the lost packets. The "sqn 1990" indicates that a receiver lost a packet with sequence number 1990 and is requesting that it be re-sent.
Router# show ip pgm router state verbose
TSI Group Neighbor TGSIZE
0A0700C85555-1000 227.7.7.7 rpf/source N/A 00:04:55
sqn 1991 age 5 (anticipated)
0A0700C85555-2000 234.4.3.2 rpf/source 16 00:04:55
For the selective TSI, the output shows resend state for sequence number 1990. This state was created by a NAK received on Ethernet interface 1/0/0. "ELIM TMR" indicates that the state is eliminating duplicates of any NAK that is pending and any new NAKs for this sequence number will not be forwarded.
State shown for sequence 1991 is anticipated state, indicating that it was created by a NAK confirmation (NCF) for a NAK sent by some other PGM router with the same PGM upstream neighbor as this router.
For the TSI with parity, the state shown was created by a parity NAK for seven packets of the Transmission Group 125. This state was received on serial interface 5/0; "# 7" indicates that seven parity packets must be forwarded out this interface.
Related Commands
Command
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Description
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clear ip pgm router
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Clears PGM traffic statistics.
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ip pgm router
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Enables PGM Router Assist and thereby allows PGM to operate more efficiently on the router.
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