Table Of Contents
tunnel udlr address-resolution
senders
To configure Test Sender parameters used in Multicast Routing Monitor (MRM), use the senders command in manager configuration mode. To restore the default values, use the no form of this command.
senders {access-list} [packet-delay milliseconds] [rtp | udp] [target-only | all-multicasts | all-test-senders] [proxy-src]
no senders {access-list} [packet-delay milliseconds] [rtp | udp] [target-only | all-multicasts | all-test-senders] [proxy-src]
Syntax Description
Defaults
packet-delay milliseconds: 200 milliseconds (that is, 5 packets per second)
rtp
all-multicastsCommand Modes
Manager configuration
Command History
Usage Guidelines
Use this command to specify which Test Senders are involved in the test and are affected by these parameters.
Examples
In the following example, the test2 group has the proxy-sender address 10.1.1.10, and the corresponding receivers command has an explicit packet delay configured to match the default packet delay of the sender:
Router(config)# ip mrm manager test1Router(config-mrm-manager)# manager e4/0/1 group 239.1.1.1Router(config-mrm-manager)# senders 1Router(config-mrm-manager)# receivers 2 sender-list 1Router(config-mrm-manager)# exitRouter(config)# ip mrm manager test2Router(config-mrm-manager)# manager e4/0/1 group 239.1.1.1Router(config-mrm-manager)# senders 1 10.1.1.10Router(config-mrm-manager)# receivers 2 sender-list 3 200Router(config-mrm-manager)# udp-port test-packet 16386 status-report 65533Router(config-mrm-manager)# exitRouter(config)# access-list 1 permit 10.1.1.2Router(config)# access-list 2 permit 10.1.4.2Router(config)# access-list 3 permit 10.1.1.10Related Commands
show ip dvmrp route
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 [name | ip-address | interface-type interface-number]
Syntax Description
name | ip-address
(Optional) Name or IP address of an entry in the DVMRP routing table.
interface-type interface-number
(Optional) Interface type and number.
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show ip dvmrp route command:
Router# show ip dvmrp routeDVMRP Routing Table - 1 entry172.16.0.0/16 [100/11] uptime 07:55:50, expires 00:02:52via 192.168.0.0, Tunnel3Table 4 describes the significant fields shown in the display.
Related Commands
ip dvmrp accept-filter
Configures an acceptance filter for incoming DVMRP reports.
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
Command Modes
User EXEC
Privileged EXECCommand History
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 groupsIGMP Connected Group MembershipGroup Address Interface Uptime Expires Last Reporter239.255.255.254 Ethernet3/1 1w0d 00:02:19 172.21.200.159224.0.1.40 Ethernet3/1 1w0d 00:02:15 172.21.200.1224.0.1.40 Ethernet3/3 1w0d never 172.16.214.251224.0.1.1 Ethernet3/1 1w0d 00:02:11 172.21.200.11224.9.9.2 Ethernet3/1 1w0d 00:02:10 172.21.200.155232.1.1.1 Ethernet3/1 5d21h stopped 172.21.200.206The following is sample output from the show ip igmp groups command with the group-address argument and detail keyword:
Router# show ip igmp groups 232.1.1.1 detailInterface: Ethernet3/2Group: 232.1.1.1Uptime: 01:58:28Group mode: INCLUDELast reporter: 10.0.119.133CSR Grp Exp: 00:02:38Group source list: (C - Cisco Src Report, U - URD, R - RemoteS- Static, M - SSM Mapping)Source Address Uptime v3 Exp CSR Exp Fwd Flags172.16.214.1 01:58:28 stopped 00:02:31 Yes CTable 5 describes the significant fields shown in the displays.
Related Commands
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
Command Modes
User EXEC
Privileged EXECCommand History
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.
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 interfaceEthernet0 is up, line protocol is upInternet address is 192.168.37.6, subnet mask is 255.255.255.0IGMP is enabled on interfaceIGMP query interval is 60 secondsInbound IGMP access group is not setMulticast routing is enabled on interfaceMulticast TTL threshold is 0Multicast designated router (DR) is 192.168.37.33No multicast groups joinedEthernet1 is up, line protocol is upInternet address is 192.168.36.129, subnet mask is 255.255.255.0IGMP is enabled on interfaceIGMP query interval is 60 secondsInbound IGMP access group is not setMulticast routing is enabled on interfaceMulticast TTL threshold is 0Multicast designated router (DR) is 192.168.36.131Multicast groups joined: 225.2.2.2 226.2.2.2Tunnel0 is up, line protocol is upInternet address is 10.1.37.2, subnet mask is 255.255.0.0IGMP is enabled on interfaceIGMP query interval is 60 secondsInbound IGMP access group is not setMulticast routing is enabled on interfaceMulticast TTL threshold is 0No multicast groups joinedTable 6 describes the significant fields shown in the display.
Related Commands
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
Command Modes
User EXEC
Privileged EXECCommand History
12.0(19)S
This command was introduced.
12.2(8)T
This command was integrated into Cisco IOS Release 12.2(8)T.
Usage Guidelines
Unlike the show ip igmp groups command, this command allows you to display detailed information about multicast channels 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 membershipFlags:A - aggregate, T - trackedL - Local, S - static, V - virtual, R - Reported through v3I - v3lite, D - Urd, M - SSM (S,G) channel1,2,3 - The version of IGMP, the group is inChannel/Group-Flags:/ - Filtering entry (Exclude mode (S,G), Include mode (*,G))Reporter:<ip-address> - last reporter if group is not explicitly tracked<n>/<m> - <n> reporter in include mode,<m> reporter in excludeChannel/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 Et2/0The 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 trackedFlags:A - aggregate, T - trackedL - Local, S - static, V - virtual, R - Reported through v3I - v3lite, D - Urd, M - SSM (S,G) channel1,2,3 - The version of IGMP, the group is inChannel/Group-Flags:/ - Filtering entry (Exclude mode (S,G), Include mode (*,G))Reporter:<ip-address> - last reporter if group is not explicitly tracked<n>/<m> - <n> reporter in include mode,<m> reporter in excludeChannel/Group Reporter Uptime Exp. Flags Interface*,239.1.1.1 2/0 00:00:11 stop 3AT Et2/010.30.0.100,239.1.1.1 10.10.0.10 00:00:11 02:48 RT Et2/010.30.0.101,239.1.1.1 10.10.0.20 00:00:03 02:56 RT Et2/010.30.0.101,239.1.1.1 10.10.0.10 00:00:11 02:48 RT Et2/010.30.0.102,239.1.1.1 10.10.0.20 00:00:03 02:56 RT Et2/0Table 7 describes the significant fields shown in the displays.
Related Commands
show ip igmp snooping
To display the Internet Group Management Protocol (IGMP) snooping configuration of the device or the VLAN, use the show ip igmp snooping command in privileged EXEC mode.
show ip igmp snooping [vlan vlan-id]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Use this command to display snooping characteristics for the device or for a specific VLAN.
Examples
The following is sample output from the show ip igmp snooping command:
Router# show ip igmp snoopingvlan 1----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is enabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this Vlanvlan 2----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is enabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this Vlanvlan 3----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is disabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this Vlanvlan 4----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is disabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this Vlanvlan 5----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is disabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this Vlanvlan 33----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is disabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this VlanThe following is sample output from the show ip igmp snooping vlan 1 command:
Router# show ip igmp snooping vlan 1vlan 1----------IGMP snooping is globally enabledIGMP snooping is enabled on this VlanIGMP snooping immediate-leave is enabled on this VlanIGMP snooping mrouter learn mode is pim-dvmrp on this VlanRelated Commands
show ip igmp snooping mrouter
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
Command Modes
Privileged EXEC
Command History
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 1Vlan ports---- -----1 Fa0/2(static), Fa0/3(dynamic)Related Commands
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
Defaults
No default behavior or values
Command Modes
User EXEC
Privileged EXECCommand History
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-mappingSSM Mapping : EnabledDNS Lookup : EnabledMcast domain : ssm-map.cisco.comName servers : 10.0.0.010.0.0.1Table 8 describes the significant fields shown in the displays.
The following example shows how to display information about the configured DNS-based SSM mapping:
Router# show ip igmp ssm-mapping 232.1.1.4Group address: 232.1.1.4Database : DNSDNS name : 4.1.1.232.ssm-map.cisco.comExpire time : 860000Source list : 172.16.8.5:172.16.8.6Table 9 describes the significant fields shown in the displays.
The following example shows how to display information about the configured static SSM mapping:
Router# show ip igmp ssm-mapping 232.1.1.4Group address: 232.1.1.4Database : StaticSource list : 172.16.8.5: 172.16.8.6Table 10 describes the significant fields shown in the displays.
The following is sample output for the show ip igmp ssm-mapping command when no SSM mappings can be found:
Router# show ip igmp ssm-mapping 232.1.1.4Can't resolve %i to source-mappingRelated Commands
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
Command Modes
User EXEC
Privileged EXECCommand History
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 udlrIGMP UDLR Status, UDL Interfaces: Serial0Group Address Interface UDL Reporter Reporter Expires224.2.127.254 Serial0 10.0.0.2 00:02:12224.0.1.40 Serial0 10.0.0.2 00:02:11225.7.7.7 Serial0 10.0.0.2 00:02:15The following is sample output of the show ip igmp udlr command on a downstream router:
downstream-rtr# show ip igmp udlrIGMP UDLR Status, UDL Interfaces: Serial0Group Address Interface UDL Reporter Reporter Expires224.2.127.254 Serial0 10.0.0.2 00:02:49224.0.1.40 Serial0 10.0.0.2 00:02:48225.7.7.7 Serial0 10.0.0.2 00:02:52Table 11 describes the significant fields shown in the first display.
show ip mcache
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
Command Modes
User EXEC
Privileged EXECCommand History
11.0
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.
Examples
The following is sample output from the show ip mcache user EXEC command. This entry shows a specific source (group1-source 239.1.1.1) sending to the group1 group (239.2.2.2).
Router> show ip mcache group1 group1-sourceIP Multicast Fast-Switching Cache(239.1.1.1/32, 239.2.2.2), Fddi0, Last used: 00:00:00Ethernet0 MAC Header: 01005E028F1800000C1883D30800Ethernet1 MAC Header: 01005E028F1800000C1883D60800Ethernet2 MAC Header: 01005E028F1800000C1883D40800Ethernet3 MAC Header: 01005E028F1800000C1883D70800The following is sample output from the show ip mcache privileged EXEC command when multicast distributed switching (MDS) is in effect:
Router# show ip mcacheIP Multicast Fast-Switching Cache(*, 239.2.3.4), Fddi3/0/0, Last used: mdsTunnel3 MAC Header: 5000602F9C150000603E473F60AAAA030000000800 (Fddi3/0/0)Tunnel0 MAC Header: 5000602F9C150000603E473F60AAAA030000000800 (Fddi3/0/0)Tunnel1 MAC Header: 5000602F9C150000603E473F60AAAA030000000800 (Fddi3/0/0)Table 12 describes the significant fields shown in the display.
show ip mpacket
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] [detail]
Syntax Description
Command Modes
Privileged EXEC
Command History
11.1
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.
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.
The three arguments and two keywords can be used in the same command in any combination.
Examples
The following is sample output from the show ip mpacket command with the group-name argument:
Router# show ip mpacket smallgroupIP Multicast Header Cache - entry count:6, next index: 7Key: id/ttl timestamp (name) source groupD782/117 206416.908 (company1.company.com) 192.168.228.10 224.5.6.77302/113 206417.908 (school.edu) 172.16.2.17 224.5.6.76CB2/114 206417.412 (company2.company.com) 172.16.19.40 224.5.6.7D782/117 206417.868 (company1.company.com) 192.168.228.10 224.5.6.7E2E9/123 206418.488 (company3.com) 239.1.8.10 224.5.6.71CA7/127 206418.544 (company4.company.com) 192.168.6.10 224.5.6.7Table 13 describes the significant fields shown in the display.
Related Commands
ip multicast cache-headers
Allocates a circular buffer to store IP multicast packet headers that the router receives.
show ip mrm interface
To display Test Sender or Test Receiver information about Multicast Routing Monitor (MRM), use the show ip mrm interface command in user EXEC or privileged EXEC mode.
show ip mrm interface [interface-type interface-number]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
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 interfaceInterface Address Mode StatusEthernet0 10.0.0.1 Test-Sender UpEthernet1 10.0.0.10 Test-Receiver UpTable 14 describes the significant fields shown in the display.
Related Commands
ip mrm
Configures an interface to operate as a Test Sender or Test Receiver, or both, for MRM.
show ip mrm manager
To display test information for Multicast Routing Monitor (MRM), 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 (as specified in the ip mrm manager command) for which to display information. If no name is specified, information about all Managers is displayed.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
Use this command to see information about the Manager.
Examples
The following is sample output from the show ip mrm manager command executed at two different times:
Router# show ip mrm manager testManager:test/10.0.0.0 is running, expire:1d00hBeacon interval/holdtime/ttl:60/86400/32Group:239.1.2.3, UDP port test-packet/status-report:16384/65535Test senders:10.0.0.1 /AckTest receivers:10.0.0.2 /AckRouter# show ip mrm manager testManager:test/10.0.0.0 is not runningBeacon interval/holdtime/ttl:60/86400/32Group:239.1.2.3, UDP port test-packet/status-report:16384/65535Test senders:10.0.0.1Test receivers:10.0.0.2Table 15 describes the significant fields shown in the display.
Related Commands
show ip mrm status-report
To display Multicast Routing Monitor (MRM) status reports of errors in the circular cache buffer, 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 for which to display received information. If no address is specified, all status reports in the cache buffer are displayed.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
Use this 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 cache buffer. The buffer 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.
Examples
The following is sample output from the show ip mrm status-report command:
Router# show ip mrm status-reportIP 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%) 0Table 16 describes the significant fields shown in the display.
Related Commands
show ip mroute
To display the contents of the IP multicast routing (mroute) table, use the show ip mroute command in user EXEC or privileged EXEC mode.
show ip mroute [vrf vrf-name] [group-address | group-name] [source-address | source-name] [interface-type interface-number] [summary] [count] [active kbps]
Syntax Description
Defaults
The show ip mroute command displays all groups and sources.
The show ip mroute active command displays all sources sending at a rate greater than or equal to 4 kbps.Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
If you omit all optional arguments and keywords, the show ip mroute command displays all entries in the IP multicast routing 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 Reverse Path Forwarding [RPF]).
The output for the show ip mroute command with the active keyword will display either positive or negative numbers for the rate PPS. The router displays negative numbers when RPF packets fail or when the router observes RPF packets with an interfaces out (OIF) list. This type of activity may indicate a multicast routing problem.
Examples
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-audioIP Multicast Routing TableFlags: 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 groupTimers: Uptime/ExpiresInterface 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: DCIncoming interface: Null, RPF neighbor 224.0.0.0, DvmrpOutgoing interface list:Ethernet0, Forward/Dense, 0:57:31/0:02:52Tunnel0, Forward/Dense, 0:56:55/0:01:28(192.168.37.100/32, 224.0.255.1), uptime 20:20:00, expires 0:02:55, flags: CIncoming interface: Tunnel0, RPF neighbor 10.20.37.33, DvmrpOutgoing interface list:Ethernet0, Forward/Dense, 20:20:00/0:02:52The following is sample output from the show ip mroute command for a router operating in sparse mode:
Router# show ip mrouteIP Multicast Routing TableFlags: 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 groupTimers: Uptime/ExpiresInterface state: Interface, Next-Hop, State/Mode(*, 224.0.255.3), uptime 5:29:15, RP is 192.168.37.2, flags: SCIncoming interface: Tunnel0, RPF neighbor 10.3.35.1, DvmrpOutgoing interface list: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: CIncoming interface: Tunnel0, RPF neighbor 10.3.35.1Outgoing interface list:Ethernet0, Forward/Sparse, 5:29:15/0:02:57The 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 224.1.1.1IP Multicast Routing TableFlags: 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 groupTimers: Uptime/ExpiresInterface state: Interface, Next-Hop or VCD, State/Mode(*, 224.1.1.1), 00:03:57/00:02:54, RP 172.16.0.0, flags: SJIncoming interface: Null, RPF nbr 224.0.0.0224.0.0.0Outgoing interface list:ATM0/0, VCD 14, Forward/Sparse, 00:03:57/00:02:53The following is sample output from the show ip mroute command with the summary keyword:
Router# show ip mroute summaryIP Multicast Routing TableFlags: 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 groupTimers: Uptime/ExpiresInterface 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(172.16.160.67/32, 224.2.127.254), 00:02:46/00:00:12, flags: CLJT(172.16.244.217/32, 224.2.127.254), 00:02:15/00:00:40, flags: CLJT(172.16.8.33/32, 224.2.127.254), 00:00:25/00:02:32, flags: CLJT(172.16.2.62/32, 224.2.127.254), 00:00:51/00:02:03, flags: CLJT(172.16.8.3/32, 224.2.127.254), 00:00:26/00:02:33, flags: CLJT(172.16.60.189/32, 224.2.127.254), 00:03:47/00:00:46, flags: CLJTThe following is sample output from the show ip mroute command with the active keyword:
Router# show ip mroute active 4Active IP Multicast Sources - sending >= 4 kbpsGroup: 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 97Source: 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 97Source: 192.168.52.160 (webcast3-e1.acm97.interop.net)Rate: 3 pps/31 kbps(1sec), 63 kbps(last 19 secs), 65 kbps(life avg)The following is sample output from the show ip mroute command for a router supporting SSM services: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 232.6.6.6IP Multicast Routing TableFlags: 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 groupOutgoing interface flags:H - Hardware switched, A - Assert winnerTimers:Uptime/ExpiresInterface state:Interface, Next-Hop or VCD, State/Mode(*, 232.6.6.6), 00:01:20/00:02:59, RP 224.0.0.0, flags:sSJPIncoming interface:Null, RPF nbr 224.0.0.0Outgoing interface list:Null(10.2.2.2, 232.6.6.6), 00:01:20/00:02:59, flags:CTIIncoming interface:Ethernet3/3, RPF nbr 224.0.0.0Outgoing interface list:Ethernet3/1, Forward/Sparse-Dense, 00:00:36/00:02:35Table 17 describes the significant fields shown in the display.
The following is sample output from the show ip mroute command with the count keyword:
Router# show ip mroute countIP Multicast Statistics4045 routes using 2280688 bytes of memory41 groups, 97.65 average sources per groupForwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per secondOther counts:Total/RPF failed/Other drops(OIF-null, rate-limit etc)Group:239.0.18.1, Source count:200, Packets forwarded:348232, Packets received:348551RP-tree:Forwarding:12/0/218/0, Other:12/0/0Source:10.1.1.1/32, Forwarding:1763/1/776/9, Other:1764/0/1Source:10.1.1.2/32, Forwarding:1763/1/777/9, Other:1764/0/1Source:10.1.1.3/32, Forwarding:1763/1/783/10, Other:1764/0/1Source:10.1.1.4/32, Forwarding:1762/1/789/10, Other:1763/0/1Source:10.1.1.5/32, Forwarding:1762/1/768/10, Other:1763/0/1Source:10.1.1.6/32, Forwarding:1793/1/778/10, Other:1794/0/1Source:10.1.1.7/32, Forwarding:1793/1/763/10, Other:1794/0/1Source:10.1.1.8/32, Forwarding:1793/1/785/10, Other:1794/0/1Source:10.1.1.9/32, Forwarding:1793/1/764/9, Other:1794/0/1Source:10.1.1.10/32, Forwarding:1791/1/774/10, Other:1792/0/1Source:10.1.2.1/32, Forwarding:1689/1/780/10, Other:1691/0/2Source:10.1.2.2/32, Forwarding:1689/1/782/10, Other:1691/0/2Source: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:8810RP-tree:Forwarding:8810/7/780/49, Other:8810/0/0Group:239.0.17.132, Source count:0, Packets forwarded:704491, Packets received:704491RP-tree:Forwarding:704491/639/782/4009, Other:704491/0/0Group:239.0.17.133, Source count:0, Packets forwarded:704441, Packets received:704441RP-tree:Forwarding:704441/639/782/3988, Other:704441/0/0Group:239.0.18.133, Source count:0, Packets forwarded:8810, Packets received:8810RP-tree:Forwarding:8810/8/786/49, Other:8810/0/0Group:239.0.18.193, Source count:0, Packets forwarded:0, Packets received:0Group:239.0.17.193, Source count:0, Packets forwarded:0, Packets received:0Group:239.0.18.134, Source count:0, Packets forwarded:8803, Packets received:8803RP-tree:Forwarding:8803/8/774/49, Other:8803/0/0
Note
Table 18 describes the significant fields shown in the display.
Related Commands
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
Command Modes
User EXEC
Privileged EXECCommand History
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 countSA State per Peer Counters, <Peer>: <# SA learned>224.135.250.116: 24172.16.240.253: 3964172.16.253.19: 10172.16.170.110: 11SA State per ASN Counters, <asn>: <# sources>/<# groups>Total entries: 4009?: 192/98, 9: 1/1, 14: 107/57, 17: 7/518: 4/3, 25: 23/17, 26: 39/27, 27: 2/232: 19/7, 38: 2/1, 52: 4/4, 57: 1/168: 4/4, 73: 12/8, 81: 19/1, 87: 9/6...Table 19 describes the significant fields shown in the display.
Related Commands
show ip msdp peer
To display detailed information about the Multicast Source Discovery Protocol (MSDP) peer, 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
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show ip msdp peer command:
Router# show ip msdp peer 224.135.250.116MSDP Peer 224.135.250.116 (rtp5-rp1.cisco.com), AS 109 (configured AS)Description:Connection status:State: Up, Resets: 9, Connection source: Loopback2 (228.69.199.17)Uptime(Downtime): 1d10h, Messages sent/received: 436765/429062Output messages discarded: 0Connection and counters cleared 1w2d agoSA Filtering:Input (S,G) filter: none, route-map: noneInput RP filter: none, route-map: noneOutput (S,G) filter: none, route-map: noneOutput RP filter: none, route-map: noneSA-Requests:Input filter: noneSending SA-Requests to peer: disabledPeer ttl threshold: 0SAs learned from this peer: 32, SAs limit: 500Input queue size: 0, Output queue size: 0Table 20 describes the significant fields shown in the display.
Related Commands
show ip msdp rpf
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 Route Processor (RP), use the show ip msdp rpf command in user EXEC or privileged EXEC mode.
show ip msdp [vrf vrf-name] rpf rp-address
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
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 command to work.
Examples
The following is sample output for the show ip msdp rpf command:
Router# show ip msdp rpf 10.0.0.0RPF peer information for ? (25.8.8.8)RPF peer: ? (2.2.2.3)RPF route/mask: 0.0.0.0/0RPF rule: Peer is IGP next hop of best routeRPF type: unicast (rip)Table 21 describes the significant fields shown in the display.
Related Commands
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
Command Modes
User EXEC
Privileged EXECCommand History
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.
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
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-cacheMSDP 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, 21:33:40/00:05:49Table 22 describes the significant fields shown in the display.
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-onlyMSDP Rejected SA Cache35 rejected SAs received over 02:50:01, cache size: 50 entriesTimestamp (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-exceeded2915.232, (10.10.10.8, 224.1.1.1), RP: 10.11.11.11, Peer: 10.10.10.8,Reason: in-filter3509.584, (10.12.12.2, 225.5.5.5), RP: 10.15.15.1, Peer: 10.12.12.2,Reason: rpf-fail...Table 23 describes the significant fields shown in the display.
Related Commands
clear ip msdp sa-cache
Clears MSDP SA cache entries.
ip msdp cache-sa-state
Enables the router to create SA state.
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 EXECCommand History
Examples
The following is sample output from the show ip msdp summary command:
Router# show ip msdp summaryMSDP Peer Status SummaryPeer Address AS State Uptime/ Reset SA Peer NameDowntime Count Count224.135.250.116 109 Up 1d10h 9 111 rtp5-rp1*172.20.240.253 1239 Up 14:24:00 5 4010 sl-rp-stk172.16.253.19 109 Up 12:36:17 5 10 shinjuku-rp1172.16.170.110 109 Up 1d11h 9 12 ams-rp1Table 24 describes the significant fields shown in the display.
show ip multicast
To display IP multicast limit information, use the show ip multicast command in user EXEC or privileged EXEC mode.
show ip multicast [global | interface | limit | vrf] interface-type interface-number
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
The multicast routing table is populated 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 Reverse Path Forwarding [RPF]).
The output for the show ip multicast command will display the IP multicast information configured on each interface.
Examples
The following sample output shows the counters that the interfaces currently have for each configured access list.
Router# show ip multicast limit
Interface Ethernet1/0Multicast Access Limitsout acl out-list (1 < max 32) exceeded 0rpf acl rpf-list (6 < max 32) exceeded 0con acl conn-list (0 < max 32) exceeded oThe following sample output shows that there have been 36 attempts to increase the counter above the configured maximum.
Router# show ip multicast limit
Interface Ethernet0/2Multicast Access Limitsi+o acl std-list (15 < max 16) exceeded 36Related Commands
ip multicast limit
Configures an interface to limit the multicast state for all groups and channels permitted by an access list to a maximum number of entries.
show ip pgm host defaults
Note
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 EXECCommand History
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 defaultsSource 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)Common Default Values:stream-type (apdu), ttl (255)Address used to source packets:(10.1.1.1)Table 25 describes the fields and default values in the sample output.
Related Commands
show ip pgm host sessions
Note
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 EXECCommand History
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 sessionsIdx GSI Source Port Type State Dest Port Mcast Address1 000000000000 0 receiver listen 48059 224.3.3.32 9CD72EF099FA 1025 source conn 48059 224.1.1.1The following user EXEC example shows traffic information for traffic session number 2:
Router> show ip pgm host sessions 2Idx GSI Source Port Type State Dest Port Mcast Address2 9CD72EF099FA 1025 source conn 48059 224.1.1.1stream-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)ODATA packets sent 0bytes sent 0RDATA packets sent 0bytes sent 0Total bytes sent 0ADPUs sent 0APDU transmit memory errors 0SPM packets sent 6NCF packets sent 0NAK packets received 0packets received in error 0General bad packets 0TX window lead 0TX window trail 0The following user EXEC example shows traffic information for multicast group address 244.1.1.1:
Router> show ip pgm host sessions 244.1.1.1Idx GSI Source Port Type State Dest Port Mcast Address2 9CD72EF099FA 1025 source conn 48059 224.1.1.1stream-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)ODATA packets sent 0bytes sent 0RDATA packets sent 0bytes sent 0Total bytes sent 0ADPUs sent 0APDU transmit memory errors 0SPM packets sent 6NCF packets sent 0NAK packets received 0packets received in error 0General bad packets 0TX window lead 0TX window trail 0Table 26 describes the significant fields shown in the displays.
Related Commands
show ip pgm host traffic
Note
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 EXECCommand History
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 trafficGeneral Statistics :Sessions in 0out 0Bytes in 0out 0Source Statistics :ODATA packets sent 0bytes sent 0RDATA packets sent 0bytes sent 0Total bytes sent 0ADPUs sent 0APDU transmit memory errors 0SPM packets sent 0NCF packets sent 0NAK packets received 0packets received in error 0Receiver Statistics :ODATA packets received 0packets received in error 0valid bytes received 0RDATA packets received 0packets received in error 0valid bytes received 0Total valid bytes received 0Total bytes received in error 0ADPUs received 0SPM packets received 0packets received in error 0NCF packets received 0packets received in error 0NAK packets received 0packets received in error 0packets sent 0Undeliverable packets 0General bad packets 0Bad checksum packets 0Table 27 describes the significant fields shown in the display.
Related Commands
show ip pgm router
To display Pragmatic General Multicast (PGM) Reliable Transport Protocol state and statistics, use the show ip pgm router command in privileged EXEC mode.
show ip pgm router [interface [interface-type interface-number] | state [group-address] | [traffic [interface-type interface-number]] [verbose]
Syntax Description
Command Modes
Privileged EXEC
Command History
12.0(5)T
This command was introduced.
12.2(13)T
The output display for this command was updated to include DLR information.
Examples
The following is sample output from the show ip pgm router command with the interface keyword:
Router# show ip pgm router interfaceAddress Interface10.1.0.2 Ethernet1/0/0 (measured drop rate 0%)10.3.0.2 Ethernet1/0/4 (measured drop rate 0%)Table 28 describes the significant fields shown in the display.
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 trafficFastEthernet0/0NAKs received 2NCFs transmitted 2RDATA forwarded 2RDATA frags forwarded 6SPMs received 4used 4SPMs forwarded 33Serial0/0NAKs forwarded 2NAKs retransmitted 2NCFs received 4RDATA received 2RDATA frags received 6SPMs received 33used 33The 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:
•
•
•
•
•
Router# show ip pgm router state verboseTSI Group Neighbor TGSIZE0A0700C85555-1000 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 verboseTSI Group Neighbor TGSIZE0A0700C85555-1000 227.7.7.7 rpf/source N/A 00:04:55sqn 1990 age 4 ELIM TMREthernet1/0/0sqn 1991 age 5 (anticipated)0A0700C85555-2000 234.4.3.2 rpf/source 16 00:04:55sqn ( 125, 7) age 10Serial5/0 prty # 7For 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
clear ip pgm router
Clears PGM traffic statistics.
ip pgm router
Enables PGM Router Assist and thereby allows PGM to operate more efficiently on the router.
show ip pim bsr
To display the bootstrap router (BSR) information, use the show ip pim bsr command in user EXEC or privileged EXEC mode.
show ip pim [vrf vrf-name] bsr
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 EXECCommand History
11.3 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.
Usage Guidelines
The output includes elected BSR information and information about the locally configured candidate rendezvous point (RP) advertisement.
Examples
The following is sample output from the show ip pim bsr command:
Router# show ip pim bsrPIMv2 Bootstrap informationThis system is the Bootstrap Router (BSR)BSR address: 172.16.143.28Uptime: 04:37:59, BSR Priority: 4, Hash mask length: 30Next bootstrap message in 00:00:03 secondsNext Cand_RP_advertisement in 00:00:03 seconds.RP: 172.16.143.28(Ethernet0), Group acl: 6Table 29 describes the significant fields shown in the display.
Related Commands
show ip pim interface
To display information about interfaces configured for Protocol Independent Multicast (PIM), use the show ip pim interface command in user EXEC or privileged EXEC mode.
show ip pim [vrf vrf-name] interface [interface-type interface-number] [df | count] [rp-address] [detail]
Syntax Description
Defaults
If no interface is specified, all interfaces are displayed.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
This command works only on interfaces that are configured for PIM.
Use the show ip pim interface count command to display switching counts for Multicast Distributed Switching (MDS) and other fast-switching statistics.
Examples
The following is sample output from the show ip pim interface command:
Router# show ip pim interfaceAddress Interface Ver/ Nbr Query DR DRMode Count Intvl Prior10.1.0.1 GigabitEthernet0/0 v2/SD 0 30 1 10.1.0.110.6.0.1 GigabitEthernet0/1 v2/SD 1 30 1 10.6.0.210.2.0.1 ATM1/0.1 v2/SD 1 30 1 0.0.0.0The following is sample output from the show ip pim interface command when an interface is specified:
Router# show ip pim interface Ethernet1/0Address Interface Ver/ Nbr Query DR DRMode Count Intvl Prior172.16.1.4 Ethernet1/0 v2/S 1 100 ms 1 172.16.1.4The following is sample output from the show ip pim interface command when the count keyword is specified:
Router# show ip pim interface countAddress Interface FS Mpackets In/Out172.16.121.35 Ethernet0 * 548305239/13744856172.16.121.35 Serial0.33 * 8256/67052912192.168.12.73 Serial0.1719 * 219444/862191The following is sample output from the show ip pim interface command when the count keyword is specified and IP MMLS is enabled. The example lists the PIM interfaces that are fast switched and process switched, and the packet counts for these interfaces. The H flag is added to interfaces where IP MMLS is enabled.
Router# show ip pim interface countStates: FS - Fast Switched, H - Hardware SwitchedAddress Interface FS Mpackets In/Out192.168.10.2 Vlan10 * H 40886/0192.168.11.2 Vlan11 * H 0/40554192.168.12.2 Vlan12 * H 0/40554192.168.23.2 Vlan23 * 0/0192.168.24.2 Vlan24 * 0/0The following are two sample outputs from the show ip pim interface command when the df keyword is specified:
Router# show ip pim interface dfInterface RP DF Winner Metric UptimeEthernet3/3 10.10.0.2 10.4.0.2 0 00:03:4910.10.0.3 10.4.0.3 0 00:01:4910.10.0.5 10.4.0.4 409600 00:01:49Ethernet3/4 10.10.0.2 10.5.0.2 0 00:03:4910.10.0.3 10.5.0.2 409600 00:02:3210.10.0.5 10.5.0.2 435200 00:02:16Loopback0 10.10.0.2 10.10.0.2 0 00:03:4910.10.0.3 10.10.0.2 409600 00:02:3210.10.0.5 10.10.0.2 435200 00:02:16Router# show ip pim interface Ethernet3/3 df 10.10.0.3Designated Forwarder election for Ethernet3/3, 10.4.0.2, RP 10.10.0.3State Non-DFOffer count is 0Current DF ip address 10.4.0.3DF winner up time 00:02:33Last winner metric preference 0Last winner metric 0Table 30 describes the significant fields shown in the displays.
The following is sample output from the show ip pim interface command with the detail keyword for Fast Ethernet interface 0/1:
Router# show ip pim interface fastethernet 0/1 detailFastEthernet0/1 is up, line protocol is upInternet address is 172.16.8.1/24Multicast switching:processMulticast packets in/out:0/0Multicast boundary:not setMulticast TTL threshold:0PIM:enabledPIM version:2, mode:densePIM DR:172.16.8.1 (this system)PIM neighbor count:0PIM Hello/Query interval:30 secondsPIM State-Refresh processing:enabledPIM State-Refresh origination:enabled, interval:60 secondsPIM NBMA mode:disabledPIM ATM multipoint signalling:disabledPIM domain border:disabledMulticast Tagswitching:disabledTable 31 describes the significant fields shown in the display.
Related Commands
show ip pim mdt bgp
To show detailed Border Gateway Protocol (BGP) advertisement of the route distinguisher (RD) for the multicast distribution tree (MDT) default group, use the show ip pim mdt bgp command in user EXEC or privileged EXEC mode.
show ip pim [vrf vrf-name] mdt bgp
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 EXECCommand History
12.0(23)S
This command was introduced.
12.2(13)T
This command was integrated into Cisco IOS Release 12.2(13)T.
Usage Guidelines
Use this command to show detailed BGP advertisement of the RD for the MDT default group.
Examples
The following is sample output from the show ip pim mdt bgp command:
Router# show ip pim mdt bgpMDT-default group 232.2.1.4rid:10.1.1.1 next_hop:10.1.1.1Table 32 describes the significant fields shown in the display.
show ip pim mdt history
To provide information on data multicast distribution trees (MDTs) that have been reused, use the show ip pim mdt history command in privileged EXEC mode.
show ip pim [vrf vrf-name] mdt history interval {minutes}
Syntax Description
Command Modes
Privileged EXEC
Command History
12.0(23)S
This command was introduced.
12.2(13)T
This command was integrated into Cisco IOS Release 12.2(13)T.
Usage Guidelines
The show ip pim mdt history command displays the data MDTs that have been reused during the past configured interval.
Examples
The following is sample output from the show ip pim mdt history command with the interval configured to be 20 minutes:
Router# show ip pim vrf vrf1 mdt history interval 20MDT-data send history for VRF - vrf1 for the past 20 minutesMDT-data group Number of reuse10.9.9.8 310.9.9.9 2Table 33 describes the significant fields shown in the display.
show ip pim mdt receive
To display the data multicast distribution tree (MDT) advertisements received by a specified router, use the show ip pim mdt receive command in privileged EXEC mode.
show ip pim [vrf vrf-name] mdt receive [detail]
Syntax Description
Command Modes
Privileged EXEC
Command History
12.0(23)S
This command was introduced.
12.2(13)T
This command was integrated into Cisco IOS Release 12.2(13)T.
Usage Guidelines
When a router wants to switch over from the default MDT to a data MDT, it advertises the VRF source, the group pair, and the global multicast address over which the traffic will be sent. If the remote router wants to receive this data, then it will join this global address multicast group.
Examples
The following is sample output from the show ip pim mdt receive command using the detail keyword for further information:
Router# show ip pim vrf vpn8 mdt receive detailJoined MDT-data groups for VRF:vpn8group:172.16.8.0 source:10.0.0.100 ref_count:13(10.101.8.10, 225.1.8.1), 1d13h/00:03:28/00:02:26, OIF count:1, flags:TY(10.102.8.10, 225.1.8.1), 1d13h/00:03:28/00:02:27, OIF count:1, flags:TYTable 34 describes the significant fields shown in the display.
show ip pim mdt send
To show the data multicast distribution tree (MDT) advertisements that a specified router has made, use the show ip pim mdt send command in privileged EXEC mode.
show ip pim [vrf vrf-name] mdt send
Syntax Description
vrf
(Optional) Supports the multicast VPN routing and forwarding (VRF) instance.
vrf-name
(Optional) Name assigned to the VRF.
Command Modes
Privileged EXEC
Command History
12.0(23)S
This command was introduced.
12.2(13)T
This command was integrated into Cisco IOS Release 12.2(13)T.
Usage Guidelines
Use this command to show the data MDT advertisements that a specified router has made.
Examples
The following is sample output from the show ip pim mdt send command:
Router# show ip pim mdt sendMDT-data send list for VRF:vpn8(source, group) MDT-data group ref_count(10.100.8.10, 225.1.8.1) 232.2.8.0 1(10.100.8.10, 225.1.8.2) 232.2.8.1 1(10.100.8.10, 225.1.8.3) 232.2.8.2 1(10.100.8.10, 225.1.8.4) 232.2.8.3 1(10.100.8.10, 225.1.8.5) 232.2.8.4 1(10.100.8.10, 225.1.8.6) 232.2.8.5 1(10.100.8.10, 225.1.8.7) 232.2.8.6 1(10.100.8.10, 225.1.8.8) 232.2.8.7 1(10.100.8.10, 225.1.8.9) 232.2.8.8 1(10.100.8.10, 225.1.8.10) 232.2.8.9 1Table 35 describes the significant fields shown in the display.
show ip pim neighbor
To list the Protocol Independent Multicast (PIM) neighbors discovered by the Cisco IOS software, use the show ip pim neighbor command in user EXEC or privileged EXEC mode.
show ip pim [vrf vrf-name] neighbor [interface-type interface-number]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
Use this command to determine which routers on the LAN are configured for PIM.
Examples
The following is sample output from the show ip pim neighbor command:
Router# show ip pim neighborPIM Neighbor TableNeighbor Interface Uptime/Expires Ver DRAddress Prio/Mode126.1.33.11 GigabitEthernet2/1 1d11h/00:00:02 v2 N / DR126.1.34.12 GigabitEthernet2/1 1d11h/00:00:02 v2 N / DR126.104.20.56 Serial4/1/0/1:0.104 1d11h/00:00:02 v2 1 / S126.105.20.58 Serial4/1/0/2:0.105 1d00h/00:01:31 v2 1 / STable 36 describes the significant fields shown in the display.
Related Commands
show ip pim rp
To display active rendezvous points (RPs) that are cached with associated multicast routing entries, use the show ip pim rp command in user EXEC or privileged EXEC mode.
show ip pim [vrf vrf-name] rp [mapping [elected | in-use] | metric] [rp-address]
Syntax Description
Defaults
If no RP is specified, all active RPs are displayed.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
The Protocol Independent Multicast (PIM) version known for an RP influences the type of PIM register messages (Version 1 or Version 2) that the router sends when acting as the designated router (DR) for an active source. If an RP is statically configured, the PIM version of the RP is not set and the router, if required to send register packets, tries to send PIM Version 2 register packets. If sending PIM Version 2 packets fails, the router sends PIM Version 1 register packets.
The version of the RP displayed in the show ip pim rp command output can change according to the operations of the router. When the group is created, the version shown is for the RP in the RP mapping cache. Later, the version displayed by this command may change. If this router is acting as a DR for an active source, the router sends PIM register messages. The PIM register messages are answered by the RP with PIM register stop messages. The router learns from these PIM register stop messages the actual PIM version of the RP. Once the actual PIM version of the RP is learned, this command displays only this version. If the router is not acting as a DR for active sources on this group, then the version shown for the RP of the group does not change. In this case, the PIM version of the RP is irrelevant to the router because the version of the RP influences only the PIM register messages that this router must send.
When you enter the show ip pim rp mapping command, the version of the RP displayed in the output is determined only by the method through which an RP is learned. If the RP is learned from Auto-RP then the RP displayed is either "v1" or "v2, v1." If the RP is learned from a static RP definition, the RP version is undetermined and no RP version is displayed in the output. If the RP is learned from the BSR, the RP version displayed is "v2."
Use the elected keyword on an Auto-RP Mapping Agent to limit the output to only the elected RPs that the mapping agent will advertise to all other routers in the network via Auto-RP. This is useful when comparing the output of the show ip pim rp mapping command on non mapping agent routers with the ouptut of the show ip pim rp mapping elected command on a mapping agent to verify that the Group-to-RP mapping information is consistent.
Examples
The following is sample output from the show ip pim rp command:
Router# show ip pim rpGroup:227.7.7.7, RP:10.10.0.2, v2, v1, next RP-reachable in 00:00:48The following is sample output from the show ip pim rp command when the mapping keyword is specified:
Router# show ip pim rp mappingPIM Group-to-RP MappingsThis system is an RP (Auto-RP)This system is an RP-mapping agentGroup(s) 227.0.0.0/8RP 10.10.0.2 (?), v2v1, bidirInfo source:10.10.0.2 (?), via Auto-RPUptime:00:01:42, expires:00:00:32Group(s) 228.0.0.0/8RP 10.10.0.3 (?), v2v1, bidirInfo source:10.10.0.3 (?), via Auto-RPUptime:00:01:26, expires:00:00:34Group(s) 229.0.0.0/8RP 10.10.0.5 (mcast1.cisco.com), v2v1, bidirInfo source:10.10.0.5 (mcast1.cisco.com), via Auto-RPUptime:00:00:52, expires:00:00:37Group(s) (-)230.0.0.0/8RP 10.10.0.5 (mcast1.cisco.com), v2v1, bidirInfo source:10.10.0.5 (mcast1.cisco.com), via Auto-RPUptime:00:00:52, expires:00:00:37The following is sample output from the show ip pim rp command when the metric keyword is specified:
Router# show ip pim rp metricRP Address Metric Pref Metric Flags RPF Type Interface10.10.0.2 0 0 L unicast Loopback010.10.0.3 90 409600 L unicast Ethernet3/310.10.0.5 90 435200 L unicast Ethernet3/3Table 37 describes the significant fields shown in the displays.
show ip pim rp-hash
To display which rendezvous point (RP) is being selected for a specified group, use the show ip pim rp-hash command in user EXEC or privileged EXEC mode.
show ip pim [vrf vrf-name] rp-hash {group-address | group-name}
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
11.3 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.
Usage Guidelines
This command displays which RP was selected for the group specified. It also shows whether this RP was selected by Auto-RP or the PIM Version 2 bootstrap mechanism.
Examples
The following is sample output from the show ip pim rp-hash command with the group address 239.1.1.1 specified:
Router# show ip pim rp-hash 239.1.1.1RP 172.16.24.12 (mt1-47a.cisco.com), v2Info source: 172.16.24.12 (mt1-47a.cisco.com), via bootstrapUptime: 05:15:33, expires: 00:02:01Table 38 describes the significant fields shown in the display.
show ip pim vc
To display ATM virtual circuit (VC) status information for multipoint VCs opened by Protocol Independent Multicast (PIM), use the show ip pim vc command in user EXEC or privileged EXEC mode.
show ip pim vc [group-address | group-name] [interface-type interface-number]
Syntax Description
Defaults
VC status information is displayed for all ATM interfaces.
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show ip pim vc command:
Router# show ip pim vcIP Multicast ATM VC StatusATM0/0 VC count is 5, max is 200Group VCD Interface Leaf Count Rate224.2.2.2 26 ATM0/0 1 0 pps224.1.1.1 28 ATM0/0 1 0 pps224.4.4.4 32 ATM0/0 2 0 pps224.5.5.5 35 ATM0/0 1 0 ppsTable 39 describes the significant fields shown in the display.
Related Commands
ip pim multipoint-signalling
Enables PIM to open ATM multipoint switched VCs for each multicast group that a receiver joins.
show ip rpf
To display how IP multicast routing does Reverse Path Forwarding (RPF), use the show ip rpf command in privileged EXEC mode.
show ip rpf [vrf vrf-name] {source-address | source-name} [metric]
Syntax Description
Defaults
If no source is specified, all sources are displayed.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
The router can reverse path forward from multiple routing tables (that is, the unicast routing table, Distance Vector Multicast Routing Protocol [DVMRP] routing table, or static multicast routes). This command tells you the source of the retrieved information.
Examples
The following is sample output from the show ip rpf command:
Router# show ip rpf 172.16.10.13RPF information for host1 (172.16.10.13)RPF interface: BRI0RPF neighbor: sj1.cisco.com (172.16.121.10)RPF route/mask: 172.16.0.0/255.255.0.0RPF type: unicastRPF recursion count: 0Doing distance-preferred lookups across tablesThe following is sample output from the show ip rpf command when the metric keyword is specified:
Router# show ip rpf 172.16.10.13 metricRPF information for host1.cisco.com (172.16.10.13)RPF interface: BRI0RPF neighbor: neighbor.cisco.com (172.16.121.10)RPF route/mask: 172.16.0.0/255.255.0.0RPF type: unicastRPF recursion count: 0Doing distance-preferred lookups across tablesMetric preference: 110Metric: 11Table 40 describes the significant fields shown in the display.
show ip rpf events
To display the last 15 triggered multicast Reverse Path Forwarding (RPF) check events, use the show ip rpf events command in user EXEC or privileged EXEC mode.
show ip rpf events
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
Use this command to determine the most recent triggered multicast RPF check events.
Examples
The following is sample output from the show ip rpf events command:
Router# show ip rpf eventsLast 15 triggered multicast RPF check eventsRPF backoff delay:500 msecRPF maximum delay:5 secDATE/TIME BACKOFF PROTOCOL EVENT RPF CHANGESMar 7 03:24:10.505 500 msec Static Route UP 0Mar 7 03:23:11.804 1000 sec BGP Route UP 3Mar 7 03:23:10.796 500 msec ISIS Route UP 0Mar 7 03:20:10.420 500 msec ISIS Route Down 3Mar 7 03:19:51.072 500 msec Static Route Down 0Mar 7 02:46:32.464 500 msec Connected Route UP 3Mar 7 02:46:24.052 500 msec Static Route Down 0Mar 7 02:46:10.200 1000 sec Connected Route UP 3Mar 7 02:46:09.060 500 msec OSPF Route UP 3Mar 7 02:46:07.416 500 msec OSPF Route Down 0Mar 7 02:45:50.423 500 msec EIGRP Route UP 3Mar 7 02:45:09.679 500 msec EIGRP Route Down 0Mar 7 02:45:06.322 500 msec EIGRP Route Down 2Mar 7 02:33:09.424 500 msec Connected Route UP 0Mar 7 02:32:28.307 500 msec BGP Route UP 3The following is sample output from the show ip rpf events command when the ip multicast rpf backoff command is used with the disable keyword, disabling the triggered RPF check function:
Router# show ip rpf eventsLast 15 triggered multicast RPF check eventsNote:Triggered RPF disabled!RPF backoff delay:50 msecRPF maximum delay:2 secDATE/TIME BACKOFF PROTOCOL EVENT RPF CHANGESSep 4 06:25:31.707 500 msec Connected Route UP 0Sep 4 06:25:30.099 500 msec Connected Route UP 0Table 41 describes the significant fields shown in the display.
show ip sap
To display the Session Announcement Protocol (SAP) cache, use the show ip sap command in user EXEC or privileged EXEC mode.
show ip sap [group-address | "session-name" | detail]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
11.1
The show ip sdr command was introduced.
12.2
The show ip sdr command was replaced by the show ip sap command.
Usage Guidelines
If the router is configured to be a member of multicast group 224.2.127.254 (the default session directory group), it will cache SAP announcements.
If no arguments or keywords are used with this command, the system displays a sorted list of session names.
Examples
The following is sample output from the show ip sap command for a session using multicast group 224.2.197.250:
Router# show ip sap 224.2.197.250SAP Cache - 198 entriesSession Name: Session1Description: This broadcast is brought to you courtesy of Name1.Group: 0.0.0.0, ttl: 0, Contiguous allocation: 1Lifetime: from 10:00:00 PDT Jul 4 1999 until 10:00:00 PDT Aug 1 1999Uptime: 4d05h, Last Heard: 00:01:40Announcement source: 128.102.84.134Created by: sample 3136541828 3139561476 IN IP4 128.102.84.134Phone number: Sample Digital Video Lab (555) 555-5555Email: email1 <name@email.com>URL: http://url.com/Media: audio 20890 RTP/AVP 0Media group: 224.2.197.250, ttl: 127Attribute: ptime:40Media: video 62806 RTP/AVP 31Media group: 224.2.190.243, ttl: 127Table 42 describes the significant fields shown in the display.
Related Commands
show ip sdr
The show ip sdr command is replaced by the show ip sap command. See the description of the show ip sap command for more information.
tunnel udlr address-resolution
To enable the forwarding of the Address Resolution Protocol (ARP) and Next Hop Resolution Protocol (NHRP) over a unidirectional link (UDL), use the tunnel udlr address-resolution command in interface configuration mode. To disable forwarding, use the no form of this command.
tunnel udlr address-resolution
no tunnel udlr address-resolution
Syntax Description
This command has no arguments or keywords.
Defaults
The command is disabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
This command is configured on the send-only tunnel interface of a downstream router.
Examples
The following example shows how to configure the tunnel udlr address-resolution command on an interface to enable ARP and NHRP over a send-only tunnel. An ARP address resolution request received from the upstream router on the UDL (Ethernet interface 0) will be replied to over the send-only tunnel of the receiver. Likewise, an ARP request may be sent by the downstream router over the send-only tunnel, and the response will be received over the UDL.
interface tunnel 0tunnel udlr send-only ethernet 0tunnel udlr address-resolutionRelated Commands
tunnel udlr send-only
Configures a unidirectional, GRE tunnel to act as a back channel that can send messages, when another interface is configured for UDLR to receive messages.
tunnel udlr receive-only
To configure a unidirectional, generic routing encapsulation (GRE) tunnel to act as a back channel that can receive messages, when another interface is configured for unidirectional link routing (UDLR) to send messages, use the tunnel udlr receive-only command in interface configuration mode. To remove the tunnel, use the no form of this command.
tunnel udlr receive-only interface-type interface-number
no tunnel udlr receive-only interface-type interface-number
Syntax Description
Defaults
No UDLR tunnel is configured.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command to configure a router that has a unidirectional interface with send-only capabilities. One example of when you might configure this command is if you have traffic traveling via a satellite.
The interface-type and interface-number arguments must match the send-only interface type and number specified by the interface command.
You must configure the tunnel udlr send-only command at the opposite end of the tunnel.
If you have a large number of receivers, you should configure UDLR by an alternative means: Internet Group Management Protocol (IGMP) UDLR. See the description of the ip igmp unidirectional-link command.
Examples
In the following example, Router A (the upstream router) is configured with Open Shortest Path First (OSPF) and Protocol Independent Multicast (PIM). Serial interface 0 has send-only capability. Therefore, the UDLR tunnel is configured as receive-only, and points to serial interface 0.
Router A Configuration
ip multicast-routing!! Serial0 has send-only capability!interface serial 0encapsulation hdlcip address 10.1.0.1 255.255.0.0ip pim sparse-dense-mode!! Configure tunnel as receive-only UDLR tunnel.!interface tunnel 0tunnel source ethernet 0tunnel destination <downstream-router>tunnel udlr receive-only serial 0!! Configure OSPF.!router ospf <pid>network 10.0.0.0 0.255.255.255 area 0Router B (the downstream router) is configured with OSPF and PIM. Serial interface 1 has receive-only capability. Therefore, the UDLR tunnel is configured as send-only, and points to serial interface 1.
Router B Configuration
ip multicast-routing!! Serial1 has receive-only capability!interface serial 1encapsulation hdlcip address 10.1.0.2 255.255.0.0ip pim sparse-dense-mode!! Configure tunnel as send-only UDLR tunnel.!interface tunnel 0tunnel source ethernet 0tunnel destination <upstream-router>tunnel udlr send-only serial 1!! Configure OSPF.!router ospf <pid>network 10.0.0.0 0.255.255.255 area 0Related Commands
tunnel udlr send-only
To configure a unidirectional, generic routing encapsulation (GRE) tunnel to act as a back channel that can send messages, when another interface is configured for unidirectional link routing (UDLR) to receive messages, use the tunnel udlr send-only command in interface configuration mode. To remove the tunnel, use the no form of this command.
tunnel udlr send-only interface-type interface-number
no tunnel udlr send-only interface-type interface-number
Syntax Description
Defaults
No UDLR tunnel is configured.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command to configure a router that has a unidirectional interface with receive-only capabilities. The UDLR tunnel will act as a back channel. One example of when you might configure this command is if you have traffic traveling via a satellite.
The interface-type and interface-number arguments must match the receive-only interface type and number specified by the interface command.
You must configure the tunnel udlr receive-only command at the opposite end of the tunnel.
Examples
In the following example, Router A (the upstream router) is configured with Open Shortest Path First (OSPF) and Protocol Independent Multicast (PIM). Serial interface 0 has send-only capability. Therefore, the UDLR tunnel is configured as receive-only, and points to serial interface 0.
Router A Configuration
ip multicast-routing!! Serial0 has send-only capability!interface serial 0encapsulation hdlcip address 10.1.0.1 255.255.0.0ip pim sparse-dense-mode!! Configure tunnel as receive-only UDLR tunnel.!interface tunnel 0tunnel source ethernet 0tunnel destination <downstream-router>tunnel udlr receive-only serial 0Router B (the downstream router) is configured with OSPF and PIM. Serial interface 1 has receive-only capability. Therefore, the UDLR tunnel is configured as send-only, and points to serial interface 1.
Router B Configuration
ip multicast-routing!! Serial1 has receive-only capability!interface serial 1encapsulation hdlcip address 10.1.0.2 255.255.0.0ip pim sparse-dense-mode!! Configure tunnel as send-only UDLR tunnel.!interface tunnel 0tunnel source ethernet 0tunnel destination <upstream-router>tunnel udlr send-only serial 1Related Commands
udp-port
To change User Datagram Protocol (UDP) port numbers to which a Test Sender sends test packets or a Test Receiver sends status reports, use the udp-port command in manager configuration mode. To remove the port numbers, use the no form of this command.
udp-port [test-packet port-number] [status-report port-number]
no udp-port [test-packet port-number] [status-report port-number]
Syntax Description
Defaults
test-packet port-number: 16384, the minimum value of an audio port
status-report port-number: 65535, the maximum value of a video portCommand Modes
Manager configuration
Command History
Usage Guidelines
Change the default values if you want to listen to a different port.
Examples
The following example changes the UDP port number to which test packets are targeted to 20000:
udp-port test-packet 20000Related Commands
