show ipv6 eigrp topology
To display entries in the Enhanced Interior Gateway Routing Protocol (EIGRP) IPv6 topology table, use the show ipv6 eigrp topology command in privileged EXEC mode.
show ipv6 eigrp topology [as-number | ipv6-address] [active | all-links | pending | summary | zero-successors]
Syntax Description
as-number |
(Optional) Autonomous system number. |
ipv6-address |
(Optional) IPv6 address. |
active |
(Optional) Displays only active entries in the EIGRP topology table. |
all-links |
(Optional) Displays all entries in the EIGRP topology table. |
pending |
(Optional) Displays all entries in the EIGRP topology table that are waiting for an update from a neighbor or are waiting to reply to a neighbor. |
summary |
(Optional) Displays a summary of the EIGRP topology table. |
zero-successors |
(Optional) Displays available routes in the EIGRP topology table. |
Command Modes
Privileged EXEC
Command History
|
|
12.4(6)T |
This command was introduced. |
12.2(33)SRB |
This command was integrated into Cisco IOS Release 12.2(33)SRB. |
12.2(33)SXH |
This command was integrated into Cisco IOS Release 12.2(33)SXH. |
Usage Guidelines
The show ipv6 eigrp topology command can be used without any keywords or arguments. If this command is used without any keywords or arguments, then only routes that are feasible successors are displayed. The show ipv6 eigrp topology command can be used to determine diffusing update algorithm (DUAL) states and to debug possible DUAL problems.
Examples
The following is sample output from the show ipv6 eigrp topology command:
Router# show ipv6 eigrp topology
IPv6-EIGRP Topology Table for AS(1)/ID(2001:0DB8:10::/64)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 2001:0DB8:3::/64, 1 successors, FD is 281600
via Connected, Ethernet1/0
show ipv6 eigrp traffic
To display the number of Enhanced Interior Gateway Routing Protocol (EIGRP) for IPv6 packets sent and received, use the show ipv6 eigrp traffic command in user EXEC or privileged EXEC mode.
show ipv6 eigrp traffic [as-number]
Syntax Description
as-number |
(Optional) Autonomous system number. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.4(6)T |
This command was introduced. |
12.2(33)SRB |
This command was integrated into Cisco IOS Release 12.2(33)SRB. |
12.2(33)SXH |
This command was integrated into Cisco IOS Release 12.2(33)SXH. |
Usage Guidelines
Use the show ipv6 eigrp traffic command to provide information on packets received and sent.
Examples
The following is sample output from the show ipv6 eigrp traffic command:
Router# show ipv6 eigrp traffic
IPv6-EIGRP Traffic Statistics for process 9
Hellos sent/received: 218/205
Updates sent/received: 7/23
Queries sent/received: 2/0
Replies sent/received: 0/2
Acks sent/received: 21/14
Table 167 describes the significant fields shown in the display.
Table 167 show ipv6 eigrp traffic Field Descriptions
|
|
process 9 |
Autonomous system number specified in the ipv6 router eigrp command. |
Hellos sent/received |
Number of hello packets sent and received. |
Updates sent/received |
Number of update packets sent and received. |
Queries sent/received |
Number of query packets sent and received. |
Replies sent/received |
Number of reply packets sent and received. |
Acks sent/received |
Number of acknowledgment packets sent and received. |
Related Commands
|
|
ipv6 router eigrp |
Configures the EIGRP for IPv6 routing process. |
show ipv6 flow cache aggregation
To display the aggregation cache configuration, use the show ipv6 cache flow aggregation command in privileged EXEC mode.
show ipv6 flow cache aggregation aggregation-type [verbose]
Syntax Description
aggregation-type |
Displays the configuration of a particular aggregation cache as follows: •Autonomous system •Destination prefix •Prefix •Protocol-port •Source prefix |
verbose |
(Optional) Displays additional information from the aggregation cache. |
Command Default
No default behavior or values.
Command Modes
Privileged EXEC
Command History
|
|
12.3(7)T |
This command was introduced. |
12.2(30)S |
This command was integrated into Cisco IOS Release 12.2(30)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. |
Examples
The following is an example display of an autonomous system aggregation cache using the show iv6 flow cache aggregation as command:
Router# show ipv6 flow cache aggregation as
IPv6 Flow Switching Cache, 278544 bytes
2 active, 4094 inactive, 13 added
178 ager polls, 0 flow alloc failures
Src If Src AS Dst If Dst AS Flows Pkts B/Pk Active
Fa1/0 0 Null 0 1 2 49 10.2
Fa1/0 0 Se2/0 20 1 5 100 0.0
The following is a sample display of an autonomous system aggregation cache for the prefix mask 2001::FFFC/64 using the show ipv6 flow cache aggregation as command:
Router# show ipv6 flow cache aggregation as
IPv6 Flow Switching Cache, 278544 bytes
2 active, 4094 inactive, 13 added
178 ager polls, 0 flow alloc failures
Src If Src AS Dst If Dst AS Flows Pkts B/Pk Active
e1/2 0 Null 0 1 2 49 10.2
e1/2 0 e1/2 20 1 5 100 0.0
The following is a sample display of an autonomous system aggregation cache for Ethernet1/2 using the show ipv6 flow cache verbose aggregation as command:
Router# show ipv6 flow cache aggregation as verbose
IPv6 Flow Switching Cache, 278544 bytes
2 active, 4094 inactive, 13 added
178 ager polls, 0 flow alloc failures
Src If Src AS Dst If Dst AS Flows Pkts B/Pk Active
e1/2 0 Null 0 1 2 49 10.2
e1/2 0 e1/2 20 1 5 100 0.0
Table 168 describes the significant fields shown in these examples.
Table 168 show ipv6 flow cache aggregation Field Descriptions
|
|
bytes |
Number of bytes of memory used by the NetFlow cache. |
active |
Number of active flows in the NetFlow cache at the time this command was entered. |
inactive |
Number of flow buffers that are allocated in the NetFlow cache, but are not currently assigned to a specific flow at the time this command is entered. |
added |
Number of flows created since the start of the summary period. |
ager polls |
Number of times the NetFlow code looked at the cache to cause entries to expire (used by Cisco for diagnostics only). |
flow alloc failures |
Number of times the NetFlow code tried to allocate a flow but could not. |
Src If |
Specifies the source interface. |
Src AS |
Specifies the source autonomous system. |
Dst If |
Specifies the destination interface. |
Dst AS |
Specifies the destination autonomous system. |
Flows |
Number of flows. |
Pkts |
Number of packets. |
B/Pk |
Average number of bytes observed for the packets seen for this protocol (total bytes for this protocol or the total number of flows for this protocol for this summary period). |
Active |
Number of active flows in the NetFlow cache at the time this command was entered. |
Related Commands
|
|
ipv6 flow-aggregation cache |
Enables aggregation cache configuration mode. |
show ipv6 flow export
To display the statistics for the data export, including the main cache and all other enabled caches, use the showipv6 flow export command in user EXEC or privileged EXEC mode.
show ipv6 flow export [template]
Syntax Description
template |
(Optional) Displays export template statistics. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(7)T |
This command was introduced. |
12.2(30)S |
This command was integrated into Cisco IOS Release 12.2(30)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. |
Examples
The following is sample output from the show ipv6 flow export command:
Router# show ipv6 flow export
Exporting flows to 10.42.42.1 (9991) 10.0.101.254 (9991)
Exporting using source IP address 10.0.101.203
Export Stats for 10.42.42.1 (9991)
3 flows exported in 3 udp datagrams
0 flows failed due to lack of export packet
3 export packets were sent up to process level
0 export packets were dropped due to no fib
0 export packets were dropped due to adjacency issues
0 export packets were dropped enqueuing for the RP
0 export packets were dropped due to IPC rate limiting
Export Stats for 10.0.101.254 (9991)
7 flows exported in 7 udp datagrams
0 flows failed due to lack of export packet
6 export packets were sent up to process level
0 export packets were dropped due to no fib
0 export packets were dropped due to adjacency issues
0 export packets were dropped enqueuing for the RP
0 export packets were dropped due to IPC rate limiting
Table 169 describes the significant fields shown in the display.
Table 169 show ipv6 flow export Field Descriptions
|
|
Exporting flows to 10.42.42.1 (9991) 10.0.101.254 (9991) |
Specifies the export destinations and ports. The ports are in parentheses. |
Exporting using source IP address 10.0.101.203 |
Specifies the source address or interface. |
Version 5 flow records |
Specifies the version of the flow. |
3 flows exported in 3udp datagrams |
The total number of export packets sent, and the total number of flows contained within them. |
0 flows failed due to lack of export packet |
No memory was available to create an export packet. |
0 export packets were sent up to process level |
The packet could not be processed by CEF or by fast switching, possibly because another feature requires running on the packet. |
0 export packets were dropped due to no fib 0 export packets were dropped due to adjacency issues |
Indicates that CEF was unable to switch the packet or forward it up to the process level. |
0 export packets were dropped enqueuing for the RP 0 export packets were dropped due to IPC rate limiting |
Indicates that there was a problem transferring the export packet between the RP and the line card. |
show ipv6 general-prefix
To display information on IPv6 general prefixes, use the show ipv6 general-prefix command in user EXEC or privileged EXEC mode.
show ipv6 general-prefix
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(4)T |
This command was introduced. |
Usage Guidelines
Use the show ipv6 general-prefix command to view information on IPv6 general prefixes.
Examples
The following example shows an IPv6 general prefix called my-prefix, which has been defined based on a 6to4 interface. The general prefix is also being used to define an address on interface loopback42.
Router# show ipv6 general-prefix
IPv6 Prefix my-prefix, acquired via 6to4
Loopback42 (Address command)
Table 170 describes the significant fields shown in the display.
Table 170 show ipv6 general-prefix Field Descriptions
|
|
IPv6 Prefix |
User-defined name of the IPv6 general prefix. |
Acquired via |
The general prefix has been defined based on a 6to4 interface. A general prefix can also be defined manually or acquired using DHCP for IPv6 prefix delegation. |
2002:B0B:B0B::/48 |
The prefix value for this general prefix. |
Loopback42 (Address command) |
List of interfaces where this general prefix is used. |
Related Commands
|
|
ipv6 general-prefix |
Defines a general prefix for an IPv6 address manually. |
show ipv6 inspect
To view Context-based Access Control (CBAC) configuration and session information, use the show ipv6 inspect command in privileged EXEC mode.
show ipv6 inspect {name inspection-name | config | interfaces | session [detail] | all}
Syntax Description
name inspection-name |
Displays the configured inspection rule with the name inspection-name. |
config |
Displays the complete Cisco IOS firewall inspection configuration. |
interfaces |
Displays interface configuration with respect to applied inspection rules and access lists. |
session [detail] |
Displays existing sessions that are currently being tracked and inspected by Cisco IOS firewall. The optional detail keyword causes additional details about these sessions to be shown. |
all |
Displays all Cisco IOS firewall configuration and all existing sessions that are currently being tracked and inspected by Cisco IOS firewall. |
Command Modes
Privileged EXEC
Command History
|
|
12.3(7)T |
This command was introduced. |
Examples
The following example asks for information about interfaces currently under inspection:
Router# show ipv6 inspect interfaces
Related Commands
|
|
ipv6 inspect |
Applies a set of inspection rules to an interface. |
show ipv6 interface
To display the usability status of interfaces configured for IPv6, use the show ipv6 interface command in user EXEC or privileged EXEC mode.
show ipv6 interface [brief] [type number] [prefix]
Syntax Description
brief |
(Optional) Displays a brief summary of IPv6 status and configuration for each interface. |
type |
(Optional) The interface type about which to display information. |
number |
(Optional) The interface number about which to display information. |
prefix |
(Optional) Prefix generated from a local IPv6 prefix pool. |
Command Default
All IPv6 interfaces are displayed.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.2(2)T |
This command was introduced. |
12.2(4)T |
The OK, TENTATIVE, DUPLICATE, ICMP redirects, and ND DAD fields were added to the command output. |
12.0(21)ST |
This command was integrated into Cisco IOS Release 12.0(21)ST. |
12.0(22)S |
This command was integrated into Cisco IOS Release 12.0(22)S. |
12.2(14)S |
This command was integrated into Cisco IOS Release 12.2(14)S. |
12.2(25)S |
Command output was updated to display information on the current Unicast RPF configuration. |
12.4(2)T |
Command output was updated to show the state of the default router preference (DRP) preference value as advertised by a router through an interface. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
12.4(4)T |
Command output was updated to show Hot Standby Router Protocol (HSRP) for IPv6 information. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 series routers. |
12.4(24)T |
Command output was updated to show the Dynamic Host Configuration Protocol (DHCP) originated addresses. |
Usage Guidelines
The show ipv6 interface command provides output similar to the show ip interface command, except that it is IPv6-specific.
Use the show ipv6 interface command to validate the IPv6 status of an interface and its configured addresses. The show ipv6 interface command also displays the parameters that IPv6 is using for operation on this interface and any configured features.
If the interface's hardware is usable, the interface is marked up. If the interface can provide two-way communication for IPv6, the line protocol is marked up.
If you specify an optional interface type and number, the command displays information only about that specific interface. For a specific interface, you can enter the prefix keyword to see the IPv6 neighbor discovery (ND) prefixes that are configured on the interface.
Examples
Interface Information for a Specific Interface with IPv6 Configured
The show ipv6 interface command displays information about the specified interface.
Router# show ipv6 interface ethernet 0/0
Ethernet0 is up, line protocol is up
IPv6 is enabled, link-local address is 2001:0DB8::/29
Global unicast address(es):
2000:0DB8::2, subnet is 2001:0DB8::/64
Joined group address(es):
ICMP error messages limited to one every 500 milliseconds
ICMP redirects are enabled
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfig for addresses.
Table 171 describes the significant fields shown in the display.
Table 171 show ipv6 interface Field Descriptions
|
|
Ethernet 0 is up, down, administratively down (down and administratively down are not shown in sample output) |
Indicates whether the interface hardware is active (whether line signal is present) and whether it has been taken down by an administrator. If the interface hardware is usable, the interface is marked "up." For an interface to be usable, both the interface hardware and line protocol must be up. |
line protocol is up, down (down is not shown in sample output) |
Indicates whether the software processes that handle the line protocol consider the line usable (that is, whether keepalives are successful or IPv6 CP has been negotiated). If the interface can provide two-way communication, the line protocol is marked up. For an interface to be usable, both the interface hardware and line protocol must be up. |
IPv6 is enabled, stalled, disabled (stalled and disabled are not shown in sample output) |
Indicates that IPv6 is enabled, stalled, or disabled on the interface. If IPv6 is enabled, the interface is marked "enabled." If duplicate address detection processing identified the link-local address of the interface as being a duplicate address, the processing of IPv6 packets is disabled on the interface and the interface is marked "stalled." If IPv6 is not enabled, the interface is marked "disabled." |
link-local address |
Displays the link-local address assigned to the interface. |
Global unicast address(es): |
Displays the global unicast addresses assigned to the interface. |
Joined group address(es): |
Indicates the multicast groups to which this interface belongs. |
MTU |
Maximum transmission unit of the interface. |
ICMP error messages |
Specifies the minimum interval (in milliseconds) between error messages sent on this interface. |
ICMP redirects |
The state of Internet Control Message Protocol (ICMP) IPv6 redirect messages on the interface (the sending of the messages is enabled or disabled). |
ND DAD |
The state of duplicate address detection on the interface (enabled or disabled). |
number of DAD attempts: |
Number of consecutive neighbor solicitation messages that are sent on the interface while duplicate address detection is performed. |
ND reachable time |
Displays the neighbor discovery reachable time (in milliseconds) assigned to this interface. |
ND advertised reachable time |
Displays the neighbor discovery reachable time (in milliseconds) advertised on this interface. |
ND advertised retransmit interval |
Displays the neighbor discovery retransmit interval (in milliseconds) advertised on this interface. |
ND router advertisements |
Specifies the interval (in seconds) for neighbor discovery router advertisements sent on this interface and the amount of time before the advertisements expire. As of Cisco IOS Release 12.4(2)T, this field displays the default router preference (DRP) value sent by this router on this interface. |
ND advertised default router preference is Medium |
The DRP for the router on a specific interface. |
show ipv6 interface Command Using the brief Keyword
The following is sample output from the show ipv6 interface command when entered with the brief keyword:
Router# show ipv6 interface brief
Ethernet0 is up, line protocol is up
Ethernet5 [administratively down/down]
2001:123::210:7BFF:FEC2:ACD8
Interface Status IPv6 Address
Ethernet0 up 3FFE:C00:0:1:260:3EFF:FE11:6770
Fddi0 up 3FFE:C00:0:2:260:3EFF:FE11:6772
Serial0 administratively down unassigned
Serial1 administratively down unassigned
Serial2 administratively down unassigned
Serial3 administratively down unassigned
Tunnel0 up unnumbered (Ethernet0)
Tunnel1 up 3FFE:700:20:1::12
IPv6 Interface with ND Prefix Configured
This sample output shows the characteristics of an interface that has generated a prefix from a local IPv6 prefix pool:
Router# show ipv6 interface Ethernet 0/0 prefix
ipv6 address 2001:0DB8::1/64
ipv6 address 2001:0DB8::2/64
ipv6 nd prefix 2001:0DB8:2::/64
ipv6 nd prefix 2001:0DB8:3::/64 2592000 604800 off-link
IPv6 Prefix Advertisements Ethernet0/0
Codes: A - Address, P - Prefix-Advertisement, O - Pool
U - Per-user prefix, D - Default
N - Not advertised, C - Calendar
default [LA] Valid lifetime 2592000, preferred lifetime 604800
AD 2001:0DB8:1::/64 [LA] Valid lifetime 2592000, preferred lifetime 604800
APD 2001:0DB8:2::/64 [LA] Valid lifetime 2592000, preferred lifetime 604800
P 2001:0DB8:3::/64 [A] Valid lifetime 2592000, preferred lifetime 604800
The default prefix shows the parameters that are configured using the ipv6 nd prefix default command.
IPv6 Interface with DRP Configured
This sample output shows the state of the DRP preference value as advertised by this router through an interface:
Router# show ipv6 interface gigabitethernet 0/1
GigabitEthernet0/1 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::130
Description: Management network (dual stack)
Global unicast address(es):
FEC0:240:104:1000::130, subnet is FEC0:240:104:1000::/64
Joined group address(es):
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Low
Hosts use stateless autoconfig for addresses.
IPv6 Interface with HSRP Configured
When HSRP IPv6 is first configured on an interface, the interface IPv6 link-local address is marked unactive (UNA) because it is no longer advertised, and the HSRP IPv6 virtual link-local address is added to the virtual link-local address list with the UNA and tentative DAD (TEN) flags set. The interface is also programmed to listen for the HSRP IPv6 multicast address.
This sample output shows the status of UNA and TEN flags, when HSRP IPv6 is configured on an interface:
Router# show ipv6 interface ethernet 0/0
Ethernet0/0 is up, line protocol is up
IPv6 is enabled, link-local address is FE80:2::2 [UNA]
Virtual link-local address(es):
FE80::205:73FF:FEA0:1 [UNA/TEN]
Global unicast address(es):
2001:2::2, subnet is 2001:2::/64
Joined group address(es):
ICMP error messages limited to one every 100 milliseconds
ND DAD is enabled, number of DAD attempts: 1
After the HSRP group becomes active, the UNA and TEN flags are cleared, and the optimistic DAD (OPT) flag is set. The solicited node multicast address for the HSRP virtual IPv6 address is also added to the interface.
This sample output shows the status of UNA, TEN and OPT flags, when HSRP group is activated:
Router# show ipv6 interface ethernet 0/0
Ethernet0/0 is up, line protocol is up
IPv6 is enabled, link-local address is FE80:2::2 [UNA]
Virtual link-local address(es):
FE80::205:73FF:FEA0:1 [OPT]
Global unicast address(es):
2001:2::2, subnet is 2001:2::/64
Joined group address(es):
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ND DAD is enabled, number of DAD attempts: 1
Table 172 describes additional significant fields shown in the displays for the show ipv6 interface command with HSRP configured.
Table 172 show ipv6 interface Command with HSRP Configured Field Descriptions
|
|
IPv6 is enabled, link-local address is FE80:2::2 [UNA] |
The interface IPv6 link-local address is marked UNA because it is no longer advertised. |
FE80::205:73FF:FEA0:1 [UNA/TEN] |
The virtual link-local address list with the UNA and TEN flags set. |
FF02::66 |
HSRP IPv6 multicast address. |
FE80::205:73FF:FEA0:1 [OPT] |
HSRP becomes active, and the HSRP virtual address marked OPT. |
FF02::1:FFA0:1 |
HSRP solicited node multicast address. |
IPv6 Interface with Minimum RA Interval Configured
When you enable Mobile IPv6 on an interface, you can configure a minimum interval between IPv6 router advertisement (RA) transmissions. The show ipv6 interface command output reports the minimum RA interval, when configured. If the minimum RA interval is not explicitly configured, then it is not displayed.
In the following example, the maximum RA interval is configured as 100 seconds, and the minimum RA interval is configured as 60 seconds on Ethernet interface 1/0:
Router(config-if)# ipv6 nd ra-interval 100 60
Subsequent use of the show ipv6 interface then displays the interval as follows:
Router(config)# show ipv6 interface ethernet 1/0
Ethernet1/0 is administratively down, line protocol is down
IPv6 is enabled, link-local address is FE80::A8BB:CCFF:FE00:5A01 [TEN]
No Virtual link-local address(es):
No global unicast address is configured
Joined group address(es):
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 60 to 100 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfig for addresses.
In the following example, the maximum RA interval is configured as 100 milliseconds (ms), and the minimum RA interval is configured as 60 ms on Ethernet interface 1/0:
Router(config)# show ipv6 interface ethernet 1/0
Ethernet1/0 is administratively down, line protocol is down
IPv6 is enabled, link-local address is FE80::A8BB:CCFF:FE00:5A01 [TEN]
No Virtual link-local address(es):
No global unicast address is configured
Joined group address(es):
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 60 to 100 milliseconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfig for addresses.
Table 173 describes additional significant fields shown in the displays for the show ipv6 interface command with minimum RA interval information configured.
Table 173 show ipv6 interface Command with Minimum RA Interval Information Configuration Field Descriptions
|
|
ND router advertisements are sent every 60 to 100 seconds |
ND RAs are sent at an interval randomly selected from a value between the minimum and maximum values. In this example, the minimum value is 60 seconds, and the maximum value is 100 seconds. |
ND router advertisements are sent every 60 to 100 milliseconds |
ND RAs are sent at an interval randomly selected from a value between the minimum and maximum values. In this example, the minimum value is 60 ms, and the maximum value is 100 ms. |
Related Commands
|
|
ipv6 nd prefix |
Configures which IPv6 prefixes are included in IPv6 router advertisements. |
ipv6 nd ra interval |
Configures the interval between IPv6 RA transmissions on an interface. |
show ip interface |
Displays the usability status of interfaces configured for IP. |
show ipv6 local pool
To display information about any defined IPv6 address pools, use the show ipv6 local pool command in privileged EXEC mode.
show ipv6 local pool [poolname [cache]]
Syntax Description
poolname |
(Optional) User-defined name for the local address pool. |
cache |
(Optional) Indicates that cache statistics are to be included in the output display |
Command Modes
Privileged EXEC
Command History
|
|
12.2(13)T |
This command was introduced. |
Usage Guidelines
If you omit the poolname argument, the command displays a generic list of all defined address pools and the IP addresses that belong to them. If you specify the poolname argument, the command displays detailed information about that pool.
Examples
The following command displays IPv6 prefix pool information, which includes cache statistics:
Router# show ipv6 local pool mypool
Prefix is 2001:0DB8::/29 assign /64 prefix
2 entries in use, 254 available, 0 rejected
0 entries cached, 1000 maximum
john 3FFE:FFFF:A:1::/64 Vi2
The following command displays IPv6 prefix pool information for all prefix pools:
Router# show ipv6 local pool
mypool 2001:0DB8::/29 65516 20
myrouter# show ipv6 local pool mypool
Prefix is 1234::/48 assign /64 prefix
20 entries in use, 65516 available, 0 rejected
0 entries cached, 1000 maximum
user1-72b 1234::/64 Vi1.21
user1-72b 1234:0:0:1::/64 Vi1.22
user1-72b 1234:0:0:2::/64 Vi1.23
user1-72b 1234:0:0:3::/64 Vi1.24
user1-72b 1234:0:0:4::/64 Vi1.25
user1-72b 1234:0:0:5::/64 Vi1.26
user1-72b 1234:0:0:6::/64 Vi1.27
user1-72b 1234:0:0:7::/64 Vi1.28
user1-72b 1234:0:0:8::/64 Vi1.29
user1-72b 1234:0:0:9::/64 Vi1.30
user1-72b 1234:0:0:A::/64 Vi1.31
user1-72b 1234:0:0:B::/64 Vi1.32
user1-72b 1234:0:0:C::/64 Vi1.33
user1-72b 1234:0:0:D::/64 Vi1.34
user1-72b 1234:0:0:E::/64 Vi1.35
user1-72b 1234:0:0:F::/64 Vi1.36
user1-72b 1234:0:0:10::/64 Vi1.37
user1-72b 1234:0:0:11::/64 Vi1.38
user1-72b 1234:0:0:12::/64 Vi1.39
user1-72b 1234:0:0:13::/64 Vi1.40
Table 174 describes the significant fields shown in the displays.
Table 174 show ipv6 local pool Field Descriptions
|
|
Scope |
The type of access. |
Pool |
Pool and group names and associations, if created. |
Begin |
The first IP address in the defined range of addresses in this pool. |
End |
The last IP address in the defined range of addresses in this pool. |
Free |
The number of addresses available. |
InUse |
The number of addresses in use. |
Related Commands
|
|
ipv6 local pool |
Configures a local pool of IPv6 addresses to be used when a remote peer connects to a point-to-point interface. |
show ipv6 mfib
To display the forwarding entries and interfaces in the IPv6 Multicast Forwarding Information Base (MFIB), use the show ipv6 mfib command in user EXEC or privileged EXEC mode.
Cisco 3660 Series Routers, Cisco 10000 Series Routers, and Catalyst 6500 Series Routers
show ipv6 mfib [vrf vrf-name] [all | linkscope | verbose | group-address-name | ipv6-prefix/prefix-length | source-address-name | interface | status | summary]
Cisco 7600 Series Routers
show ipv6 mfib [vrf vrf-name] [all | linkscope | verbose | interface | status | summary]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
all |
(Optional) Displays all forwarding entries and interfaces in the IPv6 MFIB. |
linkscope |
(Optional) Displays the link-local groups. |
verbose |
(Optional) Provides additional information, such as the MAC encapsulation header and platform-specific information. |
ipv6-prefix |
(Optional) The IPv6 network assigned to the interface. The default IPv6 prefix is 128. This argument must be in the form documented in RFC 2373 where the address is specified in hexadecimal using 16-bit values between colons. |
/prefix-length |
(Optional) The length of the IPv6 prefix. A decimal value that indicates how many of the high-order contiguous bits of the address comprise the prefix (the network portion of the address). A slash mark must precede the decimal value. |
group-address-name |
(Optional) IPv6 address or name of the multicast group. |
source-address-name |
(Optional) IPv6 address or name of the multicast group. |
interface |
(Optional) Interface settings and status. |
status |
(Optional) General settings and status. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.2(18)SXE |
Support for this command was added for the Supervisor Engine 720. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(33)SRA |
This command was integrated into Cisco IOS Release 12.2(33)SRA. |
12.3(4)T |
The link-local keyword was added. |
12.3(7)T |
The ipv6-prefix and prefix-length arguments were added. |
12.2(33)SXH |
This command was integrated into Cisco IOS Release 12.2(33)SXH. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.0(1)M |
This command was modified. The link-local keyword was changed to linkscope. |
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. |
Cisco IOS XE Release 3.2S |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
Use the show ipv6 mfib command to display MFIB entries; and forwarding interfaces, and their traffic statistics. This command can be enabled on virtual IP (VIP) if the router is operating in distributed mode.
A forwarding entry in the 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. Table 175 describes the MFIB forwarding entries and interface flags.
Table 175 MFIB Entries and Interface Flags
|
|
F |
Forward—Data is forwarded out of this interface. |
A |
Accept—Data received on this interface is accepted for forwarding. |
IC |
Internal copy—Deliver to the router a copy of the packets received or forwarded on this interface. |
NS |
Negate signal—Reverse the default entry signaling behavior for packets received on this interface. |
DP |
Do not preserve—When signaling the reception of a packet on this interface, do not preserve a copy of it (discard it instead). |
SP |
Signal present—The reception of a packet on this interface was just signaled. |
S |
Signal—By default, signal the reception of packets matching this entry. |
C |
Perform directly connected check for packets matching this entry. Signal the reception if packets were originated by a directly connected source. |
Examples
The following example displays the forwarding entries and interfaces in the MFIB. The router is configured for fast switching, and it has a receiver joined to FF05::1 on Ethernet1/1 and a source (2001::1:1:20) sending on Ethernet1/2:
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
Interface Flags: A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
Interface Counts: FS Pkt Count/PS Pkt Count
Forwarding: 0/0/0/0, Other: 0/0/0
Forwarding: 0/0/0/0, Other: 0/0/0
Forwarding: 2/0/100/0, Other: 0/0/0
(2001::1:1:200,FF05::1) Flags:
Forwarding: 5/0/100/0, Other: 0/0/0
Forwarding: 0/0/0/0, Other: 0/0/0
Table 176 describes the significant fields shown in the display.
Table 176 show ipv6 mfib Field Descriptions
|
|
Entry Flags |
Information about the entry. |
Forwarding Counts |
Statistics on the packets that are received from and forwarded to at least one interface. |
Pkt Count/ |
Total number of packets received and forwarded since the creation of the multicast forwarding state to which this counter applies. |
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. |
Kbits 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. |
Interface Flags: |
Information about the interface. See Table 175 for further information on interface flags. |
Interface Counts: |
Interface statistics. |
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 specified:
Router# show ipv6 mfib FF03:1::1
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
Interface Counts:FS Pkt Count/PS Pkt Count
Forwarding:0/0/0/0, Other:0/0/0
GigabitEthernet5/0.25 Flags:F NS
GigabitEthernet5/0.24 Flags:F NS
(5002:1::2,FF03:1::1) Flags:
Forwarding:71505/0/50/0, Other:42/0/42
GigabitEthernet5/0 Flags:A
GigabitEthernet5/0.19 Flags:F NS
GigabitEthernet5/0.20 Flags:F NS
GigabitEthernet5/0.21 Flags:F NS
GigabitEthernet5/0.16 Flags:F NS
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 and a source address of 5002:1::2 specified:
Router# show ipv6 mfib FF03:1::1 5002:1::2
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
Interface Counts:FS Pkt Count/PS Pkt Count
(5002:1::2,FF03:1::1) Flags:
Forwarding:71505/0/50/0, Other:42/0/42
GigabitEthernet5/0 Flags:A
GigabitEthernet5/0.19 Flags:F NS
GigabitEthernet5/0.20 Flags:F NS
GigabitEthernet5/0.16 Flags:F NS
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 and a default prefix of 128:
Router# show ipv6 mfib FF03:1::1/128
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
Interface Counts:FS Pkt Count/PS Pkt Count
Forwarding:0/0/0/0, Other:0/0/0
GigabitEthernet5/0.25 Flags:F NS
GigabitEthernet5/0.24 Flags:F NS
GigabitEthernet5/0.16 Flags:F NS
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FFE0 and a prefix of 15:
Router# show ipv6 mfib FFE0::/15
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
Interface Counts:FS Pkt Count/PS Pkt Count
Forwarding:0/0/0/0, Other:0/0/0
The following example shows output of the show ipv6 mfib command used with the verbose keyword. It shows forwarding entries and interfaces in the MFIB and additional information such as the MAC encapsulation header and platform-specific information.
Router# show ipv6 mfib ff33::1:1 verbose
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, K - Keepalive
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
Platform per slot HW-Forwarding Counts: Pkt Count/Byte Count
Platform flags: HF - Forwarding entry,HB - Bridge entry,HD - NonRPF Drop entry,
NP - Not platform switchable,RPL - RPF-ltl linkage,
MCG - Metset change,ERR - S/w Error Flag,RTY - In RetryQ,
LP - L3 pending,MP - Met pending,AP - ACL pending
Interface Flags: A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
Interface Counts: Distributed FS Pkt Count/FS Pkt Count/PS Pkt Count
(10::2,FF33::1:1) Flags: K
RP Forwarding: 0/0/0/0, Other: 0/0/0
LC Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwd: 0/0/0/0, Other: NA/NA/NA
Slot 6: HW Forwarding: 0/0, Platform Flags: HF RPL
Slot 1: HW Forwarding: 0/0, Platform Flags: HF RPL
Pkts: 0/0/0 MAC: 33330001000100D0FFFE180086DD
Table 177 describes the fields shown in the display.
Table 177 show ipv6 mfib verbose Field Descriptions
|
|
Platform flags |
Information about the platform. |
Platform per slot HW-Forwarding Counts |
Total number of packets per bytes forwarded. |
Related Commands
|
|
show ipv6 mfib active |
Displays the rate at which active sources are sending to multicast groups. |
show ipv6 mfib count |
Displays summary traffic statistics from the MFIB about the group and source. |
show ipv6 mfib interface |
Displays information about IPv6 multicast-enabled interfaces and their forwarding status. |
show ipv6 mfib status |
Displays the general MFIB configuration and operational status. |
show ipv6 mfib summary |
Displays summary information about the number of IPv6 MFIB entries (including link-local groups) and interfaces. |
show ipv6 mfib active
To display the rate at which active sources are sending to multicast groups, use the show ipv6 mfib active command in user EXEC or privileged EXEC mode.
show ipv6 mfib [vrf vrf-name] [all | linkscope] active [kbps]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
all |
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups. |
linkscope |
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups. |
kbps |
(Optional) Kilobits per second. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.0(1)M |
This command was modified. The link-local keyword was changed to linkscope. |
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. |
Cisco IOS XE Release 3.2S |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
Use the show ipv6 mfib active command to display MFIB entries actively used to forward packets. In many cases, it is useful to provide the optional kbps argument to limit the set of entries displayed to the ones that are forwarding an amount of traffic larger or equal to the amount set by the kbps argument.
Examples
The following example displays statistics on the rate at which active IP multicast sources are sending information. The router is switching traffic from 2001::1:1:200 to FF05::1:
Router# show ipv6 mfib active
Active IPv6 Multicast Sources - sending >= 4 kbps
Rate: 20 pps/16 kbps(1sec), 0 kbps(last 128 sec)
Table 178 describes the significant fields shown in the display.
Table 178 show ipv6 mfib active Field Descriptions
|
|
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. |
Rate...kbps |
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. Refer to the platform documentation for more information. |
show ipv6 mfib count
To display summary traffic statistics from the IPv6 Multicast Forwarding Information Base (MFIB) about multicast sources and groups, use the show ipv6 mfib count command in user EXEC or privileged EXEC mode.
show ipv6 mfib [vrf vrf-name] [all | linkscope] count
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
all |
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups. |
linkscope |
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was integrated into Cisco IOS XE Release 2.1. |
15.0(1)M |
This command was modified. The link-local keyword was changed to linkscope. |
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. |
Cisco IOS XE Release 3.2S |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
Use the show ipv6 mfib count command to display the average packet size and data rate in kilobits per seconds.
Examples
The following example displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both reserved and nonreserved groups:
Router# show ipv6 mfib all count
show ipv6 mfib global
To display information from the IPv6 Multicast Forwarding Information Base (MFIB) global table, use the show ipv6 mfib active command in user EXEC or privileged EXEC mode.
show ipv6 mfib [vrf vrf-name] [all | linkscope] global
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
all |
(Optional) Displays information in the IPv6 MFIB global table for both linkscope (reserved) and nonlinkscope (nonreserved) groups. |
linkscope |
(Optional) Displays information in the IPv6 MFIB global table for linkscope groups. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.0(1)M |
This command was modified. The link-local keyword was changed to linkscope. |
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. |
Cisco IOS XE Release 3.2S |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
If no optional keywords or arguments are entered, global table information in the IPv6 MFIB associated with nonlinkscope multicast groups are displayed.
Examples
The following example enables you to display IPv6 MFIB global table information:
Router# show ipv6 mfib global
show ipv6 mfib instance
To display information about an IPv6 Multicast Forwarding Information Base (MFIB) table instance, use the show ipv6 mfib instance command in user EXEC or privileged EXEC mode.
show ipv6 mfib [vrf vrf-name] [all | linkscope] instance
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
all |
(Optional) Displays all information about a. |
linkscope |
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.0(1)M |
This command was modified. The link-local keyword was changed to linkscope. |
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. |
Cisco IOS XE Release 3.2S |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Examples
The following example enables you to display IPv6 MFIB instance information:
Router# show ipv6 mfib instance
show ipv6 mfib interface
To display information about IPv6 multicast-enabled interfaces and their forwarding status, use the show ipv6 mfib interface command in user EXEC or privileged EXEC mode.
show ipv6 mfib interface
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
This command was integrated into Cisco IOS Release 12.0(26)S. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
Usage Guidelines
The show ipv6 mfib interface command displays the Multicast Forwarding Information Base (MFIB) interfaces and in what switching mode each MFIB has been configured.
Examples
The following example displays information about IPv6 multicast-enabled interfaces and their forwarding status. The router is configured for fast switching.
Router# show ipv6 mfib interface
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
MFIB interface status CEF-based output
Ethernet1/1 up [yes ,yes ]
Table 179 describes the significant fields shown in the display.
Table 179 show ipv6 mfib interface Field Descriptions
|
|
MFIB interface |
Specifies the MFIB interface. |
Status |
Specifies the status of the MFIB interface. |
CEF-based output |
Provides information on the Cisco Express Forwarding-based output of the MFIB interface. |
show ipv6 mfib route
To display the forwarding entries and interfaces in the IPv6 Multicast Forwarding Information Base (MFIB) without packet header information and forwarding counters, use the show ipv6 mfib route command in user EXEC or privileged EXEC mode.
show ipv6 mfib [vrf vrf-name] [all | linkscope] route
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
all |
(Optional) Displays the forwarding entries and interfaces in the IPv6 MFIB for both linkscope (reserved) and nonlinkscope (nonreserved) groups. |
linkscope |
(Optional) Displays the forwarding entries and interfaces in the IPv6 MFIB for linkscope (reserved) groups. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.0(1)M |
This command was modified. The link-local keyword was changed to linkscope. |
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. |
Cisco IOS XE Release 3.2S |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Examples
The following example enables you to display IPv6 MFIB instance information:
Router# show ipv6 mfib instance
show ipv6 mfib status
To display the general Multicast Forwarding Information Base (MFIB) configuration and operational status, use the show ipv6 mfib status command in user EXEC or privileged EXEC mode.
show ipv6 mfib status
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.0(26)S |
This command was introduced. |
12.3(4)T |
This command was integrated into Cisco IOS Release 12.3(4)T. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
Usage Guidelines
Use the show ipv6 mfib status to find such information as whether or not MFIB is enabled and running.
Examples
The following example displays MFIB information:
Router# show ipv6 mfib status
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: not running
Notes: MFIB not running because multicast routing is disabled
Table 180 describes the significant fields shown in the displays.
Table 180 show ipv6 mfib status Field Descriptions
|
|
Configuration status: enabled |
MFIB is enabled on the device. |
Operational status: not running |
Although MFIB is enabled on the device, it is not running. |
Notes: |
Information about MFIB configuration and operational status. |
show ipv6 mfib summary
To display summary information about the number of IPv6 Multicast Forwarding Information Base (MFIB) entries (including link-local groups) and interfaces, use the show ipv6 mfib summary command in user EXEC or privileged EXEC mode.
show ipv6 mfib [vrf vrf-name] summary
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
This command was integrated into Cisco IOS Release 12.0(26)S. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
The show ipv6 mfib summary command shows the IP multicast routing table in abbreviated form. The command displays only the number of MFIB entries, the number of (*, G) and (S, G) entries, and the number of MFIB interfaces specified.
The show ipv6 mfib summary command counts all entries, including link-local entries.
Examples
The following example displays summary information about the number of IPv6 MFIB entries and interfaces:
Router# show ipv6 mfib summary
54 total entries [1 (S,G), 7 (*,G), 46 (*,G/m)]
Table 181 describes the significant fields shown in the display.
Table 181 show ipv6 mfib summary Field Descriptions
|
|
54 total entries |
Total number of MFIB entries, including the number of (*, G) and (S, G) entries. |
17 total MFIB interfaces |
Sum of all the MFIB interfaces in all the MFIB entries. |
show ipv6 mld groups
To display the multicast groups that are directly connected to the router and that were learned through Multicast Listener Discovery (MLD), use the show ipv6 mld groups command in user EXEC or privileged EXEC mode.
show ipv6 mld [vrf vrf-name] groups [link-local] [group-name | group-address] [interface-type interface-number] [detail | explicit]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
link-local |
(Optional) Displays the link-local groups. |
group-name | group-address |
(Optional) IPv6 address or name of the multicast group. |
interface-type interface-number |
(Optional) Interface type and number. |
detail |
(Optional) Displays detailed information about individual sources. |
explicit |
(Optional) Displays information about the hosts being explicitly tracked on each interface for each group. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.3(7)T |
The explicit keyword was added. |
12.2(25)S |
The link-local and explicit keywords were added. |
12.4(2)T |
Information about MLD state limits was added to the command output. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
If you omit all optional arguments, the show ipv6 mld groups command displays by group address and interface type and number all directly connected multicast groups, including link-local groups (where the link-local keyword is not available) used.
Examples
The following is sample output from the show ipv6 mld groups command. It shows all of the groups joined by Fast Ethernet interface 2/1, including link-local groups used by network protocols.
Router# show ipv6 mld groups FastEthernet 2/1
MLD Connected Group Membership
Group Address Interface Uptime Expires
FF02::2 FastEthernet2/1 3d18h never
FF02::D FastEthernet2/1 3d18h never
FF02::16 FastEthernet2/1 3d18h never
FF02::1:FF00:1 FastEthernet2/1 3d18h 00:00:27
FF02::1:FF00:79 FastEthernet2/1 3d18h never
FF02::1:FF23:83C2 FastEthernet2/1 3d18h 00:00:22
FF02::1:FFAF:2C39 FastEthernet2/1 3d18h never
FF06:7777::1 FastEthernet2/1 3d18h 00:00:26
The following is sample output from the show ipv6 mld groups command using the detail keyword:
Router# show ipv6 mld groups detail
Last reporter: FE80::250:54FF:FE60:3B14
Source Address Uptime Expires Fwd Flags
2004:4::6 00:00:11 00:04:08 Yes Remote Ac 4
The following is sample output from the show ipv6 mld groups command using the explicit keyword:
Router# show ipv6 mld groups explicit
Up:00:43:11 EXCLUDE(0/1) Exp:00:03:17
Host Address Uptime Expires
FE80::A8BB:CCFF:FE00:800 00:43:11 00:03:17
Up:00:42:22 INCLUDE(1/0) Exp:not used
Host Address Uptime Expires
FE80::A8BB:CCFF:FE00:800 00:42:22 00:03:17
EXCLUDE/INCLUDE - The mode the group is in on the router.
(0/1) (1/0) - (Number of hosts in INCLUDE mode/Number of hosts in EXCLUDE moe)
Exp:Expiry time for the group.
FE80::A8BB:CCFF:FE00:800 - Host ipv6 address.
00:43:11 - Uptime for the host.
00:03:17 - Expiry time for the host
Mode:INCLUDE/EXCLUDE - Mode the Host is operating in.
300::1, 300::2, 300::3 - Sources that the host has joined in the above specified mode.
Table 182 describes the significant fields shown in the display.
Table 182 show ipv6 mld groups Field Descriptions
|
|
Group Address |
Address of the multicast group. |
Interface |
Interface through which the group is reachable. |
Uptime |
How long (in hours, minutes, and seconds) this multicast group has been known. |
Expires |
How long (in hours, minutes, and seconds) until the entry is removed from the MLD groups table. The expiration timer shows "never" if the router itself has joined the group, and the expiration timer shows "not used" when the router mode of the group is INCLUDE. In this situation, the expiration timers on the source entries are used. |
Last reporter: |
Last host to report being a member of the multicast group. |
Flags Ac 4 |
Flags counted toward the MLD state limits configured. |
Related Commands
|
|
ipv6 mld query-interval |
Configures the frequency at which the Cisco IOS software sends MLD host-query messages. |
show ipv6 mld groups summary
To display the number of (*, G) and (S, G) membership reports present in the Multicast Listener Discovery (MLD) cache, use the show ipv6 mld groups summary command in user EXEC or privileged EXEC mode.
show ipv6 mld groups summary
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
This command was integrated into Cisco IOS Release 12.0(26)S. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
Usage Guidelines
The show ipv6 mld groups summary command displays the number of directly connected multicast groups (including link-local groups).
Examples
The following is sample output from the show ipv6 mld groups summary command:
Router# show ipv6 mld groups summary
Table 183 describes the significant fields shown in the display.
Table 183 show ipv6 mld groups summary Field Descriptions
|
|
No. of (*,G) routes = 5 |
Displays the number of groups present in the MLD cache. |
No. of (S,G) routes = 0 |
Displays the number of include and exclude mode sources present in the MLD cache. |
show ipv6 mld host-proxy
To display IPv6 MLD host proxy information, use the show ipv6 mld host-proxy command in user EXEC or privileged EXEC mode.
show ipv6 mld host-proxy [interface-type interface-number] [group [group-address]]
Syntax Description
interface-type interface-number |
(Optional) Interface type and number. |
group |
(Optional) Displays a list of group entries for which the specified interface is acting as a proxy interface. |
group-address |
(Optional) Specified group. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
15.1(2)T |
This command was introduced. |
Usage Guidelines
The show ipv6 mld host-proxy command displays MLD proxy information. When this command is used with the interface-type interface-number arguments, interface details such as interface state, IPv6 address, MLD state, etc., are displayed. If an interface is not specified, the show ipv6 mld host-proxy command displays all active proxy interfaces on the router.
The show ipv6 mld host-proxy command when used with the interface-type interface-number arguments and the group keyword displays information about group entries for which interface is acting as a proxy interface. If the group-address argument is specified, it display the group information for specified group.
Examples
The following example displays IPv6 MLD proxy information for the Ethernet 0/0 interface:
Router# show ipv6 mld host-proxy Ethernet0/0
Ethernet0/0 is up, line protocol is up
Internet address is FE80::34/64
MLD is enabled on interface
MLD querying router is FE80::12, Version: MLDv2
Current MLD host version is 2
MLD max query response time is 10 seconds
Number of MLD Query sent on interface : 10
Number of MLD Query received on interface : 20
Number of MLDv1 report sent : 5
Number of MLDv2 report sent : 10
Number of MLDv1 leave sent : 0
Number of MLDv2 leave sent : 1
Table 184 describes the significant fields shown in the display.
Table 184 show ipv6 mld host-proxy Field Descriptions
|
|
Ethernet0/0 is up, line protocol is up |
State of the specified interface. |
Internet address is FE80::34/64 |
IPv6 address of the specified interface. |
MLD is enabled on interface |
State of MLD on the interface, whether enabled or disabled. |
MLD querying router is FE80::12, Version: MLDv2 |
IPv6 address and MLD version of the querying router. |
Current MLD host version is 2 |
Configured MLD host version. |
MLD max query response time is 10 seconds |
Maximum allowed response time for the query. |
Number of MLD Query sent on interface: 10 |
Number of MLD queries sent from the interface. |
Number of MLD Query received on interface: 20 |
Number of MLD queries received on the interface. |
Number of MLDv1 report sent : 5 |
Number of MLDv1 membership reports sent. |
Number of MLDv2 report sent : 10 |
Number of MLDv2 membership reports sent. |
Number of MLDv1 leave sent : 0 |
Number of MLDv1 leave reports sent. |
Number of MLDv2 leave sent : 1 |
Number of MLDv2 leave reports sent. |
The following example provides information about a group entry for the Ethernet 0/0 proxy interface:
Router# show ipv6 mld host-proxy Ethernet0/0 group
Table 184 describes the significant fields shown in the display.
Table 185 show ipv6 mld host-proxy Field Descriptions
|
|
Group: FF5E::12 |
The IPv6 address of the group. |
Uptime: 00:00:07 |
The length of time the group has been active. |
Group mode: INCLUDE |
The group mode. |
Version MLDv2 |
The MLD version on the proxy interface. |
Group source list: |
Information on the group source list. |
Related Commands
|
|
ipv6 mld host-proxy |
Enables the MLD proxy feature. |
ipv6 mld host-proxy interface |
Enables the MLD proxy feature on a specified interface on an RP. |
show ipv6 mld interface
To display multicast-related information about an interface, use the show ipv6 mld interface command in user EXEC or privileged EXEC mode.
show ipv6 mld [vrf vrf-name] interface [type number]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
type number |
(Optional) Interface type and number. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
This command was integrated into Cisco IOS Release 12.0(26)S. |
12.4(2)T |
Information about MLD state limits was added to the command output. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
If you omit the optional type and number arguments, the show ipv6 mld interface command displays information about all interfaces.
Examples
The following is sample output from the show ipv6 mld interface command for Ethernet interface 2/1/1:
Router# show ipv6 mld interface Ethernet 2/1/1
Global State Limit : 2 active out of 2 max
Loopback0 is administratively down, line protocol is down
Ethernet2/1/1 is up, line protocol is up
Internet address is FE80::260:3EFF:FE86:5649/10
MLD is enabled on interface
MLD query interval is 125 seconds
MLD querier timeout is 255 seconds
MLD max query response time is 10 seconds
Last member query response interval is 1 seconds
Interface State Limit : 2 active out of 3 max
State Limit permit access list:
MLD activity: 83 joins, 63 leaves
MLD querying router is FE80::260:3EFF:FE86:5649 (this system)
Table 186 describes the significant fields shown in the display.
Table 186 show ipv6 mld interface Field Descriptions
|
|
Ethernet2/1/1 is up, line protocol is up |
Interface type, number, and status. |
Internet address is... |
Internet address of the interface and subnet mask being applied to the interface. |
MLD is enabled in interface |
Indicates whether Multicast Listener Discovery (MLD) has been enabled on the interface with the ipv6 multicast-routing command. |
Current MLD version is 2 |
The current MLD version. |
MLD query interval is 125 seconds |
Interval (in seconds) at which the Cisco IOS software sends MLD query messages, as specified with the ipv6 mld query-interval command. |
MLD querier timeout is 255 seconds |
The length of time (in seconds) before the router takes over as the querier for the interface, as specified with the ipv6 mld query-timeout command. |
MLD max query response time is 10 seconds |
The length of time (in seconds) that hosts have to answer an MLD Query message before the router deletes their group, as specified with the ipv6 mld query-max-response-time command. |
Last member query response interval is 1 seconds |
Used to calculate the maximum response code inserted in group and source-specific query. Also used to tune the "leave latency" of the link. A lower value results in reduced time to detect the last member leaving the group. |
Interface State Limit : 2 active out of 3 max |
Two out of three configured interface states are active. |
State Limit permit access list: change |
Activity for the state permit access list. |
MLD activity: 83 joins, 63 leaves |
Number of groups joins and leaves that have been received. |
MLD querying router is FE80::260:3EFF:FE86:5649 (this system) |
IPv6 address of the querying router. |
Related Commands
|
|
ipv6 mld join-group |
Configures MLD reporting for a specified group and source. |
ipv6 mld query-interval |
Configures the frequency at which the Cisco IOS software sends MLD host-query messages. |
show ipv6 mld snooping
To display Multicast Listener Discovery version 2 (MLDv2) snooping information, use the show ipv6 mld snooping command in privileged EXEC mode.
show ipv6 mld [vrf vrf-name] snooping {explicit-tracking vlan vlan | mrouter [vlan vlan] | report-suppression vlan vlan | statistics vlan vlan}
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
explicit-tracking vlan vlan |
Displays the status of explicit host tracking. |
mrouter |
Displays the multicast router interfaces on an optional VLAN. |
vlan vlan |
(Optional) Specifies the VLAN number on the multicast router interfaces. |
report-suppression vlan vlan |
Displays the status of the report suppression. |
statistics vlan vlan |
Displays MLD snooping information on a VLAN. |
Command Default
This command has no default settings.
Command Modes
Privileged EXEC
Command History
|
|
12.2(18)SXE |
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. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
You can enter the show ipv6 mld snooping mrouter command without arguments to display all the multicast router interfaces.
Examples
This example shows how to display explicit tracking information on VLAN 25:
Router# show ipv6 mld 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
This example shows how to display the multicast router interfaces in VLAN 1:
Router# show ipv6 mld snooping mrouter vlan 1
-----+----------------------------------------
1 Gi1/1,Gi2/1,Fa3/48,Router
This example shows the MLD snooping statistics information for VLAN 25:
Router# show ipv6 mld snooping statistics interface vlan 25
Snooping staticstics for Vlan25
Source/Group Interface Reporter Uptime Last-Join Last-Leave
10.1.1.1/226.2.2.2 Gi1/2:Vl25 10.27.2.3 00:01:47 00:00:50 -
10.2.2.2/226.2.2.2 Gi1/2:Vl25 10.27.2.3 00:01:47 00:00:50 -
Related Commands
|
|
ipv6 mld snooping |
Enables MLDv2 snooping globally. |
ipv6 mld snooping explicit-tracking |
Enables explicit host tracking. |
ipv6 mld snooping querier |
Enables the MLDv2 snooping querier. |
ipv6 mld snooping report-suppression |
Enables report suppression on a VLAN. |
show ipv6 mld ssm-map
To display Source Specific Multicast (SSM) mapping information, use the show ipv6 mld ssm-map static command in user EXEC or privileged EXEC mode.
show ipv6 mld [vrf vrf-name] ssm-map [source-address]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
source-address |
(Optional) Source address associated with an MLD membership for a group identified by the access list. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.2(18)SXE |
This command was introduced. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
12.2(33)SRA |
This command was integrated into Cisco IOS Release 12.2(33)SRA. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
If the optional source-address argument is not used, all SSM mapping information is displayed.
Examples
The following example shows all SSM mappings for the router:
Router# show ipv6 mld ssm-map
The following examples show SSM mapping for the source address 2001:0DB8::1:
Router# show ipv6 mld ssm-map 2001:0DB8::1
Group address : 2001:0DB8::1
Source list : 2001:0DB8::2
Router# show ipv6 mld ssm-map 2001:0DB8::2
Group address : 2001:0DB8::2
Source list : 2001:0DB8::3
Table 187 describes the significant fields shown in the displays.
Table 187 show ipv6 mld ssm-map Field Descriptions
|
|
SSM Mapping |
The SSM mapping feature is enabled. |
DNS Lookup |
The DNS lookup feature is automatically enabled when the SSM mapping feature is enabled. |
Group address |
Group address identified by a specific access list. |
Group mode ssm : TRUE |
The identified group is functioning in SSM mode. |
Database : STATIC |
The router is configured to determine source addresses by checking static SSM mapping configurations. |
Database : DNS |
The router is configured to determine source addresses using DNS-based SSM mapping. |
Source list |
Source address associated with a group identified by the access list. |
Related Commands
|
|
debug ipv6 mld ssm-map |
Displays debug messages for SSM mapping. |
ipv6 mld ssm-map enable |
Enables the SSM mapping feature for groups in the configured SSM range |
ipv6 mld ssm-map query dns |
Enables DNS-based SSM mapping. |
ipv6 mld ssm-map static |
Configures static SSM mappings. |
show ipv6 mld traffic
To display the Multicast Listener Discovery (MLD) traffic counters, use the show ipv6 mld traffic command in user EXEC or privileged EXEC mode.
show ipv6 mld [vrf vrf-name] traffic
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.0(26)S |
This command was introduced. |
12.3(4)T |
This command was integrated into Cisco IOS Release 12.3(4)T. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(33)SRA |
This command was integrated into Cisco IOS Release 12.2(33)SRA. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
Use the show ipv6 mld traffic command to check if the expected number of MLD protocol messages have been received and sent.
Examples
The following example displays the MLD protocol messages received and sent.
Router# show ipv6 mld traffic
Elapsed time since counters cleared:00:00:21
Packets Received on MLD-disabled Interface 0
Table 188 describes the significant fields shown in the display.
Table 188 show ipv6 mld traffic Field Descriptions
|
|
Elapsed time since counters cleared |
Indicates the amount of time (in hours, minutes, and seconds) since the counters cleared. |
Valid MLD packets |
Number of valid MLD packets received and sent. |
Queries |
Number of valid queries received and sent. |
Reports |
Number of valid reports received and sent. |
Leaves |
Number of valid leaves received and sent. |
Mtrace packets |
Number of multicast trace packets received and sent. |
Errors |
Types of errors and the number of errors that have occurred. |
show ipv6 mobile binding
To display information about the binding cache, use the show ipv6 mobile binding command in user EXEC or privileged EXEC mode.
show ipv6 mobile binding [care-of-address address | home-address address | interface-type interface-number]
Syntax Description
care-of-address |
(Optional) Provides information about the mobile node's current location. |
address |
(Optional) Current address of the mobile node. |
home-address |
(Optional) IPv6 address is assigned to the mobile node within its home subnet prefix on its home link. |
interface-type interface-number |
(Optional) Interface type and number. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(14)T |
This command was introduced. |
12.4(11)T |
Command output was updated to display the tunnel interface and the tunnel end point details. |
Usage Guidelines
The show ipv6 mobile binding command displays details of all bindings that match all search criteria. If no optional keywords or arguments are specified, all bindings are displayed.
Examples
The following example displays information about the binding cache:
Router# show ipv6 mobile binding
Mobile IPv6 Binding Cache Entries:
2001:1::8
via care-of address 2001:2::1
home-agent 2001:1::2
state ACTIVE, sequence 1, flags AHrlK
lifetime:remaining 1023 (secs), granted 1024 (secs), requested 1024 (secs)
interface Ethernet1/3
0 tunneled, 0 reversed tunneled
Selection matched 1 bindings
The following example displays information about the tunnel interface and the tunnel end point details:
Router# show ipv6 mobile bindings
Tunnel Interface: tunnel0
Tunnel Source 2001:0DB1:1:1
Tunnel Destination: 2001:0DB1:2:1
Input: 20 packets, 1200 bytes, 0 drops
Output: 20 packets, 1200 bytes, 0 drops
Table 180 describes the significant fields shown in the displays.
Table 189 show ipv6 mobile binding Field Descriptions
|
|
2001:1::8 |
Home IPv6 address of the mobile node. |
via care-of address 2001:2::1 |
Care-of address of the mobile node. |
home-agent 2001:1::2 |
Home-agent address |
state ACTIVE, sequence 1, flags AHrlK |
•State: State of the mobile binding. •Sequence number. •Flags: Services requested by mobile node. The mobile node requests these services by setting bits in the registration request. Uppercase characters denote bit set. |
lifetime:remaining 1023 (secs), granted 1024 (secs), requested 1024 (secs) |
•Remaining: The time remaining until the registration is expired. It has the same initial value as lifetime granted, and is counted down by the home agent. •Granted: The lifetime granted to the mobile node for this registration. Number of seconds in parentheses. •Requested: The lifetime requested by the mobile node for this registration. Number of seconds in parentheses. |
interface Ethernet1/3 |
The interface being used. |
0 tunneled, 0 reversed tunneled |
Number of bindings tunneled and reverse tunneled. |
Selection matched 1 bindings |
Total number of mobility bindings that were matched. |
Tunnel Interface |
The tunnel interface being used. |
Tunnel Source |
Tunnel source IPv6 address. |
Tunnel Destionation |
Tunnel destination IPv6 address. |
Input |
Number of packets in. |
Output |
Number of packets out. |
Related Commands
binding |
Configures binding options for the Mobile IPv6 home agent feature in home-agent configuration mode. |
ipv6 mobile home-agent (interface configuration) |
Initializes and starts the Mobile IPv6 home agent on a specific interface. |
show ipv6 mobile globals
To display global Mobile IPv6 parameters, use the show ipv6 mobile globals command in user EXEC or privileged EXEC mode.
show ipv6 mobile globals
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(14)T |
This command was introduced. |
12.4(11)T |
Command output was updated to show the Mobile IPv6 tunnel information on the home agent. |
Usage Guidelines
The show ipv6 mobile globals command displays the values of all global configuration parameters associated with Mobile IPv6 and lists the interfaces on which home agent functionality is operating.
Examples
In the following example, the show ipv6 mobile globals command displays the binding parameters:
Router# show ipv6 mobile globals
Mobile IPv6 Global Settings:
1 Home Agent service on following interfaces:
Maximum number is unlimited.
Binding lifetime permitted is 262140 seconds
Recommended refresh time is 300 seconds
In the following example, the show ipv6 mobile globals command displays the Mobile IPv6 tunnel information parameters on the home agent:
Router# show ipv6 mobile globals
Tunnel Encapsulation Mode: IPv6/IPv6
ICMP Unreachable for tunnel interfaces <enabled/disabled>
Tunnel Path MTU Discovery: <enabled/disabled>
Table 180 describes the significant fields shown in the displays.
Table 190 show ipv6 mobile globals Field Descriptions
|
|
1 Home Agent service on following interfaces: Ethernet1/2 |
Interface on which the home agent service is enabled. |
Bindings: |
Information on bindings. |
Maximum number is unlimited. |
The amount of bindings allowed on the home agent. |
1 bindings are in use. |
How many bindings are being used. |
1 bindings peak |
The maximum number of bindings that have been used in this session. |
Binding lifetime permitted is 262140 seconds |
The configured binding lifetime. |
Recommended refresh time is 300 seconds |
The configured refresh time. |
Tunnel Encapsulation Mode: |
Tunnel encapsulation type. |
ICMP Unreachable for tunnel interfaces |
Enabled or disabled. |
Tunnel Path MTU Discovery: |
Enabled or disabled. |
Related Commands
|
|
address (IPv6 mobile router) |
Specifies the home address of the IPv6 mobile node. |
binding |
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode. |
ipv6 mobile home-agent (global configuration) |
Enters home agent configuration mode. |
host group |
Creates a host configuration in Mobile IPv6. |
show ipv6 mobile home-agents
To display local and discovered neighboring home agents, use the show ipv6 mobile home-agents command in user EXEC or privileged EXEC mode.
show ipv6 mobile home-agents [interface-type interface-number [prefix]]
Syntax Description
interface-type interface-number |
(Optional) Interface type and number. |
prefix |
(Optional) IPv6 address prefix of the care-of address or the home address of neighboring agents. |
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
|
|
12.3(14)T |
This command was introduced. |
Usage Guidelines
The show ipv6 mobile home-agents command displays information about local and discovered neighboring home agents. You can choose to display information on a specified interface using the optional interface-type and interface-number arguments, and you can further choose to display only those addresses that match the optional prefix argument.
If no argument or keyword is entered, the home agent list for each interface on which the router is acting as a home agent is displayed. Each list is displayed in decreasing order of preference.
Examples
In the following example, the fact that no neighboring mobile home agents were found is displayed:
Router# show ipv6 mobile home-agents
Home Agent information for Ethernet1/3
preference 0 lifetime 1800
global address 2001:0DB8:1::2/64
FE80::4, last update 0 min
preference 0 lifetime 1800
global address 2001:0DB8:1::4/64
Table 180 describes the significant fields shown in the display.
Table 191 show ipv6 mobile home-agents Field Descriptions
|
|
Home Agent information for Ethernet1/3 |
The interface on which the home agent is configured. |
Configured: FE80::20B:BFFF:FE33:501F |
The IPv6 address on which the home agent is configured. |
preference 0 lifetime 1800 |
The configured home agent preference and lifetime. |
global address 2001:0DB8:1::2/64 |
The configured global address. |
Discovered Home Agents: FE80::4, last update 0 min preference 0 lifetime 1800 global address 2001:0DB8:1::4/64 |
The address and configuration information about discovered home agents. |
Related Commands
|
|
binding |
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode. |
show ipv6 mobile host groups
To display information about IPv6 mobile host groups, use the show ipv6 mobile host groups command in user EXEC or privileged EXEC mode.
show ipv6 mobile host groups [profile-name]
Syntax Description
profile-name |
(Optional) Host group profile name. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.4(11)T |
This command was introduced. |
Usage Guidelines
The show ipv6 mobile host groups command lists the configuration of all configured host groups. To display information about a specific host group, use the optional profile-name keyword.
Examples
In the following example, information about a host group named localhost is displayed:
Router# show ipv6 mobile host groups
Mobile IPv6 Host Configuration
Host Group Name: localhost
Address: CAB:C0:CA5A:CA5A::CA5A
Security Association Entry:
SPI: (Hex: 501) (Decimal Int: 1281)
Key Format: Hex Key: baba
Replay Protection: On Replay Window: 6 secs
Table 180 describes the significant fields shown in the display.
Table 192 show ipv6 mobile host groups Field Descriptions
|
|
Host Group Name: localhost |
Configuration information about the host group named localhost to follow. |
NAI: sai@cisco.com |
Network access identifier (NAI) for localhost host group. |
Address: 2001:0DB8:CA5A:CA5A::CA5A |
IPv6 address for localhost host group. |
Security Association Entry: |
Security association for the host group named localhost to follow. |
SPI: (Hex: 501) (Decimal Int: 1281) |
SPI for localhost. |
Key Format: Hex Key: baba |
Key format and name for localhost. |
Algorithm: HMAC_SHA1 |
Authentication algorithm. |
Replay Protection: On Replay Window: 6 secs |
Replay protection is activated, and the number of seconds that the router uses for replay protection is 6. |
Related Commands
|
|
address (Mobile IPv6) |
Specifies the home address of the IPv6 mobile node. |
authentication (Mobile IPv6) |
Specifies the authentication properties for the IPv6 mobile node by creating either a unidirectional or bidirectional SPI. |
host group |
Creates a host group configuration in IPv6 Mobile. |
nai |
Specifies the NAI for the IPv6 mobile node. |
show ipv6 mobile globals |
Displays global Mobile IPv6 parameters. |
show ipv6 mobile router
To display configuration information and monitoring statistics about the IPv6 mobile router, use the show ipv6 mobile router command in user EXEC or privileged EXEC mode.
show ipv6 mobile router [running-config | status]
Syntax Description
running-config |
(Optional) Displays IPv6 mobile router running configuration information. |
status |
(Optional) Displays IPv6 mobile router status information. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.4(20)T |
This command was introduced. |
Usage Guidelines
The show ipv6 mobile router display includes the mobile router configuration information such as the home address and network mask, home agent, and registration settings, and operational information such as status, tunnel interface, active foreign agent, and care-of address.
Examples
The following is sample output from the show ipv6 mobile router command:
Router# show ipv6 mobile router
Mobile Reverse Tunnel established
---------------------------------
Home Agent: 2001:DB8:2000::2001
CareOf Address: 2001:DB8::A8BB:CCFF:FE01:F611
Attachment Router: FE80::A8BB:CCFF:FE01:F511
Attachment Interface: Ethernet1/1
Home Network: 2001:DB8:2000:0:FDFF:FFFF:FFFF:FFFE/64
Home Address: 2001:DB8:2000::1111
Table 193 describes the significant fields shown in the display.
Table 193 show ipv6 mobile router Field Descriptions
|
|
Mobile Reverse Tunnel established |
If reverse tunnel is enabled or disabled, this information is displayed or absent, respectively. |
using Nemo Basic mode |
Type of mode being used by the mobile router. |
Home Agent: |
Home agent with which the mobile router registers. The mobile router registers only to the home agent with the highest priority when multiple addresses are configured. |
CareOf Address: |
Care-of address used by the registered mobile router. |
Attachment Router: |
Attachment point in the foreign network. |
Attachment Interface: |
Attachment interface used in the foreign network. |
Home Network: |
IPv6 address of the mobile router home network. |
Home Address: |
IPv6 address of the mobile router. |
show ipv6 mobile traffic
To display information about binding updates received and binding acknowledgments sent, use the show ipv6 mobile traffic command in user EXEC or privileged EXEC mode.
show ipv6 mobile traffic
Syntax Description
The command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(14)T |
This command was introduced. |
12.2(33)SRA |
This command was integrated into Cisco IOS Release 12.2(33)SRA. |
Usage Guidelines
The show ipv6 mobile traffic command displays counters and other information associated with Mobile IPv6. The following counters are maintained globally across all interfaces:
•Dynamic home agent discovery requests received
•Binding updates received
•Home agent registrations received
•Successful home agent registrations
•Home agent deregistrations (lifetime of zero or care-of address equals home address)
•Home agent registrations rejected, defined in the status as sent in the binding acknowledgment with a separate counter for every reason code defined in Table 194, and generated by the implementation
•Time of last registration acceptance
•Time of last registration denial
•Status code for last registration denial
•Binding updates discarded through rate limiting
•Binding acknowledgments discarded through rate limiting
•Binding cache high-water mark, maintained and displayed for registrations
Table 194 shows possible binding status values and reasons for use of these values.
Table 194 show ipv6 mobile traffic Field Descriptions
|
|
0 |
Binding update accepted |
128 |
Reason unspecified |
129 |
Administratively prohibited |
130 |
Insufficient resources |
131 |
Home registration not supported |
132 |
Not home subnet |
133 |
Not home agent for this mobile node |
134 |
Duplicate address detection (DAD) failed |
135 |
Sequence number out of window |
Examples
In the following example, information about IPv6 Mobile traffic is displayed:
Router# show ipv6 mobile traffic
0 truncated, 0 format errors
Binding Updates received:6477
0 no HA option, 0 BU's length
0 options' length, 0 invalid CoA
Binding Acknowledgements sent:6477
6477 accepted (0 prefix discovery required)
0 reason unspecified, 0 admin prohibited
0 insufficient resources, 0 home reg not supported
0 not home subnet, 0 not home agent for node
0 DAD failed, 0 sequence number
0 no binding, 0 unknown MH
6477 registrations, 0 deregistrations
00:00:23 since last accepted HA registration
unknown time since last failed HA registration
unknown last failed registration code
0 tunneled, 0 reversed tunneled
Dynamic Home Agent Address Discovery:
1 requests received, 1 replies sent
0 solicitations received, 0 advertisements sent
Table 195 describes the significant fields shown in the display.
Table 195 show ipv6 mobile traffic Field Descriptions
|
|
MIPv6 statistics: |
Information about binding updates received by the mobility agent. |
Sent: |
Information about binding acknowledgments sent by the mobility agent. |
Binding Errors sent: |
Information about binding errors sent by the mobility agent. |
Home Agent Traffic: 6477 registrations, 0 deregistrations |
Number of registrations and deregistrations accepted by the home agent. |
00:00:23 since last accepted HA registration |
Length of time since the last registration was accepted by the home agent. |
unknown time since last failed HA registration |
Length of time since the last failed registration by the home agent. |
unknown last failed registration code |
Reason why the registration failed, if it did fail. |
Dynamic Home Agent Address Discovery: |
Number of dynamic home agent discovery requests received and replies sent. |
Mobile Prefix Discovery: |
Number of mobile prefix discovery solicitations received and advertisements sent by the home agent. |
Related Commands
|
|
binding |
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode. |
show ipv6 mobile tunnels
To list the Mobile IPv6 tunnels on the home agent, use the show ipv6 mobile tunnels command in user EXEC or privileged EXEC mode.
show ipv6 mobile tunnels [summary | tunnel if-number]
Syntax Description
tunnel if-number |
(Optional) Tunnel interface. |
summary |
(Optional) Summary of tunnels on the home agent. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.4(11)T |
This command was introduced. |
Usage Guidelines
The show ipv6 mobile tunnels command displays active tunnels on the Mobile IPv6 home agent. Use the summary keyword to view a summary of all tunnels on the home agent, or the tunnel if-number keyword and argument to view information on a specific tunnel.
Examples
The following example displays information about the Mobile IPv6 tunnels on the home agent:
Router# show ipv6 mobile tunnels
Tunnel1:
Source: 2001:0DB1:1:1
Destination: 2001:0DB1:2:1
Encapsulation Mode: IPv6/IPv6
Egress Interface: Ethernet 1/0
Switching Mode: Process
Keep-Alive: Not Supported
Path MTU Discovery: Enabled
Input: 20 packets, 1200 bytes, 0 drops
Output: 20 packets, 1200 bytes, 0 drops
NEMO Options: Not Supported
Table 180 describes the significant fields shown in the display.
Table 196 show ipv6 mobile tunnels Field Descriptions
|
|
Source: |
Source IPv6 tunnel address. |
Destination: |
Destination IPv6 tunnel address. |
Encapsulation Mode: |
Tunnel encapsulation type. |
Egress interface: |
Interface used for egress (outgoing packets). |
Switching mode: |
Type of switching mode used. |
Keep-alive: |
Supported or not supported. |
Path MTU Discovery: |
Enabled or disabled. |
Input: |
Number of packets in. |
Output: |
Number of packets out. |
NEMO Options: |
Supported or not supported. |
Related Commands
|
|
show ipv6 mobile home-agent |
Displays local and discovered neighboring home agents. |
show ipv6 mrib client
To display information about the clients of the Multicast Routing Information Base (MRIB), use the show ipv6 mrib client command in user EXEC or privileged EXEC mode.
show ipv6 mrib [vrf vrf-name] client [filter] [name {client-name | client-name:client-id}]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
filter |
(Optional) Displays information about MRIB flags that each client owns and that each client is interested in. |
name |
(Optional) The name of a multicast routing protocol that acts as a client of MRIB, such as Multicast Listener Discovery (MLD) and Protocol Independent Multicast (PIM). |
client-name:client-id |
The name and ID of a multicast routing protocol that acts as a client of MRIB, such as MLD and PIM. The colon is required. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
This command was integrated into Cisco IOS Release 12.0(26)S. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
Use the filter keyword to display information about the MRIB flags each client owns and the flags in which each client is interested.
Examples
The following is sample output from the show ipv6 mrib client command:
Router# show ipv6 mrib client
IP MRIB client-connections
igmp:145 (connection id 0)
pim:146 (connection id 1)
mfib ipv6:3 (connection id 2)
slot 3 mfib ipv6 rp agent:16 (connection id 3)
slot 1 mfib ipv6 rp agent:16 (connection id 4)
slot 0 mfib ipv6 rp agent:16 (connection id 5)
slot 4 mfib ipv6 rp agent:16 (connection id 6)
slot 2 mfib ipv6 rp agent:16 (connection id 7)
Table 197 describes the significant fields shown in the display.
Table 197 show ipv6 mrib client Field Descriptions
|
|
igmp:145 (connection id 0) pim:146 (connection id 1) mfib ipv6:3 (connection id 2) mfib ipv6 rp agent:16 (connection id 3) |
Client ID (client name:process ID) |
show ipv6 mrib route
To display Multicast Routing Information Base (MRIB) route information, use the show ipv6 mrib route command in user EXEC or privileged EXEC mode.
show ipv6 mrib [vrf vrf-name] route [link-local | summary | [sourceaddress-or-name | *] [groupname-or-address [prefix-length]]]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
link-local |
(Optional) Displays the link-local groups. |
summary |
(Optional) Displays the number of MRIB entries (including link-local groups) and interfaces present in the MRIB table. |
sourceaddress-or-name |
(Optional) IPv6 address or name of the source. |
* |
(Optional) Displays all MRIB route information. |
groupname-or-address |
(Optional) IPv6 address or name of the multicast group. |
prefix-length |
(Optional) IPv6 prefix length. |
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
All entries are created by various clients of the MRIB, such as Multicast Listener Discovery (MLD), Protocol Independent Multicast (PIM), and Multicast Forwarding Information Base (MFIB). The flags on each entry or interface serve as a communication mechanism between various clients of the MRIB. The entries reveal how PIM sends register messages for new sources and the action taken.
The summary keyword shows the count of all entries, including link-local entries.
The interface flags are described in Table 198.
Table 198 Description of Interface Flags
|
|
F |
Forward—Data is forwarded out of this interface |
A |
Accept—Data received on this interface is accepted for forwarding |
IC |
Internal copy |
NS |
Negate signal |
DP |
Do not preserve |
SP |
Signal present |
II |
Internal interest |
ID |
Internal uninterest |
LI |
Local interest |
LD |
Local uninterest |
C |
Perform directly connected check |
Special entries in the MRIB indicate exceptions from the normal behavior. For example, no signaling or notification is necessary for arriving data packets that match any of the special group ranges. The special group ranges are as follows:
•Undefined scope (FFX0::/16)
•Node local groups (FFX1::/16)
•Link-local groups (FFX2::/16)
•Source Specific Multicast (SSM) groups (FF3X::/32).
For all the remaining (usually sparse-mode) IPv6 multicast groups, a directly connected check is performed and the PIM notified if a directly connected source arrives. This procedure is how PIM sends register messages for new sources.
Examples
The following is sample output from the show ipv6 mrib route command using the summary keyword:
Router# show ipv6 mrib route summary
No. of Route x Interfaces (RxI) = 10
Table 199 describes the significant fields shown in the display.
Table 199 show ipv6 mrib route Field Descriptions
|
|
No. of (*, G) routes |
Number of shared tree routes in the MRIB. |
No. of (S, G) routes |
Number of source tree routes in the MRIB. |
No. of Route x Interfaces (RxI) |
Sum of all the interfaces on each MRIB route entry. |
show ipv6 mroute
To display the information in the PIM topology table in a format similar to the show ip mroute command, use the show ipv6 mroute command in user EXEC or privileged EXEC mode.
show ipv6 mroute [vrf vrf-name] [link-local | [group-name | group-address [source-address | source-name]] [summary] [count]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
link-local |
(Optional) Displays the link-local groups. |
group-name | group-address |
(Optional) IPv6 address or name of the multicast group. |
source-address | source-name |
(Optional) IPv6 address or name of the source. |
summary |
(Optional) Displays a one-line, abbreviated summary of each entry in the IPv6 multicast routing table. |
count |
(Optional) Displays statistics from the Multicast Forwarding Information Base (MFIB) about the group and source, including number of packets, packets per second, average packet size, and bytes per second. |
Command Default
The show ipv6 mroute command displays all groups and sources.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(25)S |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
The IPv6 multicast implementation does not have a separate mroute table. For this reason, the show ipv6 mroute command enables you to display the information in the PIM topology table in a format similar to the show ip mroute command.
If you omit all optional arguments and keywords, the show ipv6 mroute command displays all the entries in the PIM topology table (except link-local groups where the link-local keyword is available).
The Cisco IOS software populates the PIM topology table by creating (S,G) and (*,G) entries based on PIM protocol messages, MLD reports, and traffic. 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]).
Use the show ipv6 mroute command to display the forwarding status of each IPv6 multicast route.
Examples
The following is sample output from the show ipv6 mroute command:
Router# show ipv6 mroute ff07::1
Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group,
C - Connected, L - Local, I - Received Source Specific Host Report,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
Interface state:Interface, State
(*, FF07::1), 00:04:45/00:02:47, RP 2001:0DB8:6::6, flags:S
Incoming interface:Tunnel5
POS4/0, Forward, 00:04:45/00:02:47
(2001:0DB8:999::99, FF07::1), 00:02:06/00:01:23, flags:SFT
Incoming interface:POS1/0
RPF nbr:2001:0DB8:999::99
POS4/0, Forward, 00:02:06/00:03:27
The following is sample output from the show ipv6 mroute command with the summary keyword:
Router# show ipv6 mroute ff07::1 summary
Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group,
C - Connected, L - Local, I - Received Source Specific Host Report,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
Interface state:Interface, State
(*, FF07::1), 00:04:55/00:02:36, RP 2001:0DB8:6::6, OIF count:1, flags:S
(2001:0DB8:999::99, FF07::1), 00:02:17/00:01:12, OIF count:1, flags:SFT
The following is sample output from the show ipv6 mroute command with the count keyword:
Router# show ipv6 mroute ff07::1 count
71 routes, 24 groups, 0.04 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)
RP Forwarding:0/0/0/0, Other:0/0/0
LC Forwarding:0/0/0/0, Other:0/0/0
Source:2001:0DB8:999::99,
RP Forwarding:0/0/0/0, Other:0/0/0
LC Forwarding:0/0/0/0, Other:0/0/0
HW Forwd: 20000/0/92/0, Other:0/0/0
Tot. shown:Source count:1, pkt count:20000
Table 200 describes the significant fields shown in the display.
Table 200 show ipv6 mroute Field Descriptions
|
|
Flags: |
Provides information about the entry. •S—sparse. Entry is operating in sparse 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. •L—local. The router itself is a member of the multicast group. •I—received source specific host report. Indicates that an (S, G) entry was created by an (S, G) report. This flag is set only on the designated router (DR). •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 is typically 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 value 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. The default SPT-Threshold value of 0 kbps is used for the group, and the J - Join SPT flag is always set on (*, G) entries and is never cleared. The router immediately switches to the shortest path source tree when traffic from a new source is received. |
Timers: Uptime/Expires |
"Uptime" indicates per interface how long (in hours, minutes, and seconds) the entry has been in the IPv6 multicast routing table. "Expires" indicates per interface how long (in hours, minutes, and seconds) until the entry will be removed from the IPv6 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. "Next-Hop" specifies the IP address of the downstream neighbor. •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. "Mode" indicates that the interface is operating in sparse mode. |
(*, FF07::1) and (2001:0DB8:999::99) |
Entry in the IPv6 multicast routing table. The entry consists of the IPv6 address of the source router followed by the IPv6 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. |
flags: |
Information set by the MRIB clients on this MRIB 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 nbr |
IP address of the upstream router to the RP or source. |
Outgoing interface list: |
Interfaces through which packets will be forwarded. For (S,G) entries, this list will not include the interfaces inherited from the (*,G) entry. |
Related Commands
|
|
ipv6 multicast-routing |
Enables multicast routing using PIM and MLD on all IPv6-enabled interfaces of the router and enables multicast forwarding. |
show ipv6 mfib |
Displays the forwarding entries and interfaces in the IPv6 MFIB. |
show ipv6 mroute active
To display the active multicast streams on the router, use the show ipv6 mroute active command in user EXEC or privileged EXEC mode.
show ipv6 mroute [vrf vrf-name] [link-local | group-name | group-address] active [kbps]
Syntax Description
vrf vrf-name |
(Optional) Specifies a virtual routing and forwarding (VRF) configuration. |
link-local |
(Optional) Displays the link-local groups. |
group-name | group-address |
(Optional) IPv6 address or name of the multicast group. |
kbps |
(Optional) Displays the rate that active sources are sending to multicast groups. Active sources are those sending at the kbps value or higher. The kbps argument defaults to 4 kbps. |
Command Default
The kbps argument defaults to 4 kbps.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.3(2)T |
This command was introduced. |
12.2(18)S |
This command was integrated into Cisco IOS Release 12.2(18)S. |
12.0(26)S |
The link-local keyword was added. |
12.3(4)T |
The link-local keyword was added. |
12.2(25)S |
The link-local keyword was added. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
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. |
Cisco IOS XE Release 2.1 |
This command was introduced on Cisco ASR 1000 Series Routers. |
15.1(4)M |
The vrf vrf-name keyword and argument were added. |
Usage Guidelines
The show ipv6 mroute active command displays active multicast streams with data rates that are greater than or equal to the kilobits per second set by the user. The command default is 4 kbps.
Examples
The following is sample output from the show ipv6 mroute active command:
Router# show ipv6 mroute active
Active IPv6 Multicast Sources - sending >= 4 kbps
Rate:11 pps/8 kbps(1sec), 8 kbps(last 8 sec)
Table 201 describes the significant fields shown in the display.
Table 201 show ipv6 mroute active Field Descriptions
|
|
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. |
Rate...kbps |
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. |
show ipv6 mtu
To display maximum transmission unit (MTU) cache information for IPv6 interfaces, use the show ipv6 mtu command in user EXEC or privileged EXEC mode.
show ipv6 mtu [vrf vrfname]
Syntax Description
vrf |
(Optional) Displays an IPv6 Virtual Private Network (VPN) routing/forwarding instance (VRF). |
vrfname |
(Optional) Name of the IPv6 VRF. |
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.2(2)T |
This command was introduced. |
12.0(21)ST |
This command was integrated into Cisco IOS Release 12.0(21)ST. |
12.0(22)S |
This command was integrated into Cisco IOS Release 12.0(22)S. |
12.2(14)S |
This command was integrated into Cisco IOS Release 12.2(14)S. |
12.2(28)SB |
This command was integrated into Cisco IOS Release 12.2(28)SB. |
12.2(25)SG |
This command was integrated into Cisco IOS Release 12.2(25)SG. |
12.2(33)SRA |
This command was integrated into Cisco IOS Release 12.2(33)SRA. |
12.2(33)SB |
The vrf keyword and vrfname argument were added. |
Usage Guidelines
The vrf keyword and vrfname argument allow you to view MTUs related to a specific VRF.
Examples
The following is sample output from the show ipv6 mtu command:
MTU Since Destination Address
1280 00:04:50 FE80::203:A0FF:FED6:141D
The following is sample output from the show ipv6 mtu command using the vrf keyword and vrfname argument. This example provides information about the VRF named vrfname1:
Router# show ipv6 mtu vrf vrfname1
MTU Since Source Address Destination Address
1300 00:00:04 2001:0DB8:2 2001:0DB8:7
Table 202 describes the significant fields shown in the display.
Table 202 show ipv6 mtu Field Descriptions
|
|
MTU |
MTU, which was contained in the Internet Control Message Protocol (ICMP) packet-too-big message, used for the path to the destination address. |
Since |
Age of the entry since the ICMP packet-too-big message was received. |
Destination Address |
Address contained in the received ICMP packet-too-big message. Packets originating from this router to this address should be no bigger than the given MTU. |
Related Commands
|
|
ipv6 mtu |
Sets the MTU size of IPv6 packets sent on an interface. |
show ipv6 nat statistics
To display Network Address Translation—Protocol Translation (NAT-PT) statistics, use the show iv6 nat statistics command in user EXEC or privileged EXEC mode.
show ipv6 nat statistics
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
|
|
12.2(13)T |
This command was introduced. |
Examples
The following is sample output from the show ipv6 nat statistics command:
Router# show ipv6 nat statistics
Total active translations: 4 (2 static, 2 dynamic; 2 extended)
Table 203 describes the significant fields shown in the display.
Table 203 show ipv6 nat statistics Field Descriptions
|
|
Total active translations |
Number of translations active in the system. This number increments by one each time a translation is created and is decremented each time a translation is cleared or times out. Displays the numbers for each type of translation. |
NAT-PT interfaces |
The interfaces, by type and number, that are configured to run NAT-PT translations. |
Hits |
Number of times the software does a translations table lookup and finds an entry. |
Misses |
Number of times the software does a translations table lookup, fails to find an entry, and must try to create one. |
Expired translations |
Cumulative count of translations that have expired since the router was booted. |
Related Commands
|
|
show ipv6 nat translations |
Displays active NAT-PT translations. |