Displays information about the interfaces where Internet Group Management Protocol (IGMP) is enabled. If you do not specify a VRF name or range of VRF IDs, the results show information for the Global Router. If you do specify a VRF name or range of VRF IDs, the results show information only for the VRFs you specify.
show ip igmp interface
show ip igmp interface gigabitethernet [<1-4059>] [{slot/port[/sub-port][-slot/port[/sub-port]][,...]}]
show ip igmp interface vlan [<1-4059>] [vrf WORD<1-16>] [vrfids WORD<0-512>]
show ip igmp interface vrf WORD<1-16> [vrfids WORD<0-512>]
show ip igmp interface vrfids WORD<0-512>
Identifies the slot and port in one of the following formats: a single slot and port (slot/port), a range of slots and ports (slot/port-slot/port), or a series of slots and ports (slot/port,slot/port,slot/port). If the platform supports channelization and the port is channelized, you must also specify the sub-port in the format slot/port/sub-port.
Specifies the VLAN ID in the range of 1 to 4059. By default, VLAN IDs 1 to 4059 are configurable and the system reserves VLAN IDs 4060 to 4094 for internal use. On switches that support the vrf-scaling and spbm-config-mode boot configuration flags, if you enable these flags, the system also reserves VLAN IDs 3500 to 3998. VLAN ID 1 is the default VLAN and you cannot create or delete VLAN ID 1.
None
Privileged EXEC
The following table shows the field descriptions for the show ip igmp interface if you do not use the interface parameters.
|
Output Field |
Description |
|---|---|
|
IF |
Indicates the interface where IGMP is configured. |
|
QUERY INTVL |
Indicates the frequency at which IGMP host query packets transmit on this interface. |
|
STATUS |
Indicates the activation of a row, which activates IGMP on the interface. The destruction of a row disables IGMP on the interface. |
|
VERS. |
Indicates the version of IGMP that runs on this interface. This object configures a router capable of running either version. For IGMP to function correctly, you must configure all routers on a LAN to run the same version of IGMP. |
|
OPER VERS |
Indicates the operational version of IGMP. |
|
QUERIER |
Indicates the address of the IGMP querier on the IP subnet to which this interface attaches. |
|
QUERY MAXRSPT |
Indicates the maximum query response time (in tenths of a second) advertised in IGMPv2 queries on this interface. |
|
WRONG QUERY |
Indicates the number of queries received where the IGMP version does not match the interface version. You must configure all routers on a LAN to run the same version of IGMP. If queries are received with the wrong version, a configuration error occurs. |
|
JOINS |
Indicates the number of times this interface added a group membership. |
|
ROBUST |
Indicates the robustness variable, which you can configure for the expected packet loss on a subnet. If you expect packet loss on a subnet, increase the robustness variable. |
|
LASTMEM QUERY |
Indicates the maximum response time (in tenths of a second) inserted into group-specific queries sent in response to leave group messages, and is also the amount of time between group-specific query messages. Use this value to modify the leave latency of the network. A reduced value results in reduced time to detect the loss of the last member of a group. This variable does not apply to IGMPv1. |
|
MODE |
Indicates the protocol configured on the VLAN added.
|
|
L2ISID |
Indicates the I-SID associated with the Layer 2 interface. |
|
SCOPE ISID |
Displays the scope I-SID of the SPB multicast sender. A value of 0xFFFFFFFF is returned when the sender type does not support SPB scope I-SID. |
The following table shows the field descriptions for the show ip igmp interface if you use the interface parameters.
|
Output Field |
Description |
|---|---|
|
VLAN ID or PORT NUM |
Identifies the VLAN or port where IGMP is configured. |
|
QUERY INTVL |
Indicates the frequency at which IGMP host query packets transmit on this interface. |
|
QUERY MAX RESP |
Indicates the maximum query response time (in tenths of a second) advertised in IGMPv2 queries on this interface. |
|
ROBUST |
Indicates the robustness variable, which you can configure for the expected packet loss on a subnet. If you expect packet loss on a subnet, increase the robustness variable. |
|
VERSION |
Indicates the version of IGMP that runs on this interface. This object configures a router capable of running either version. For IGMP to function correctly, you must configure all routers on a LAN to run the same version of IGMP. |
|
LAST MEMB QUERY |
Indicates the maximum response time (in tenths of a second) inserted into group-specific queries sent in response to leave group messages, and is also the amount of time between group-specific query messages. Use this value to modify the leave latency of the network. A reduced value results in reduced time to detect the loss of the last member of a group. This variable does not apply to IGMPv1. |
|
PROXY SNOOP ENABLE |
Indicates if proxy snoop is enabled on the interface. |
|
SNOOP ENABLE |
Indicates if snoop is enabled on the interface. |
|
SNOOP ORIGIN |
Specifies the origin of the IGMP Snooping configuration on the port. The supported values are:
|
|
SSM SNOOP ENABLE |
Indicates if SSM snoop is enabled on the interface. |
|
UPnP FILTER ENABLE |
Indicates if Universal Plug and Play (uPnP) Filtering is enabled to filter multicast packets destined for a specific range. The default is disabled. |
|
FAST LEAVE ENABLE |
Indicates if fast leave mode is enabled on the interface. |
|
FAST LEAVE PORTS (VLAN parameter only) |
Indicates the set of ports that are enabled for fast leave |
|
SNOOP QUERIER ENABLE (VLAN parameter only) |
Indicates if the IGMP Layer 2 Querier feature is enabled. |
|
SNOOP QUERIER ADDRESS (VLAN parameter only) |
Indicates the IP address of the IGMP Layer 2 querier. |
|
DYNAMIC DOWNGRADE VERSION |
Indicates if the dynamic downgrade feature is enabled. |
|
COMPATIBILITY MODE |
Indicates if compatibility mode is enabled. |
|
EXPLICIT HOST TRACKING |
Indicates if explicit host tracking is enabled to track all the source and group members. |
|
UPnP FILTER ADDRESS |
Indicates the multicast destination IP address to filter on an IGMP-enabled interface. The default is 239.255.255.250/32. |
The following examples display information about the interfaces where IGMP is enabled.
Switch:1#show ip igmp interface vrf l3vsn-100
=======================================================================================================
Igmp Interface - VRF l3vsn-100
=======================================================================================================
QUERY OPER QUERY WRONG LASTMEM SCOPE
IF INTVL STATUS VERS. VERS QUERIER MAXRSPT QUERY JOINS ROBUST QUERY MODE L2ISID ISID
-------------------------------------------------------------------------------------------------------
V10 125 inact 2 2 0.0.0.0 100 0 0 2 10 routed-spb 0 100
Switch:1#show ip igmp interface vlan 2
========================================================================================
Vlan Ip Igmp
========================================================================================
VLAN QUERY QUERY ROBUST VERSION LAST PROXY SNOOP SNOOP SSM UPnP FAST FAST
ID INTVL MAX MEMB SNOOP ENABLE ORIGIN SNOOP FILTER LEAVE LEAVE
RESP QUERY ENABLE ENABLE ENABLE ENABLE PORTS
----------------------------------------------------------------------------------------
2 125 100 2 2 10 false false RADIUS false true false
VLAN SNOOP SNOOP DYNAMIC COMPATIBILITY EXPLICIT UPnP
ID QUERIER QUERIER DOWNGRADE MODE HOSTS FILTER
ENABLE ADDRESS VERSION TRACKING ADDRESS
----------------------------------------------------------------------------------------
2 false 0.0.0.0 enable disable disable 192.0.2.3/24