show ip igmp group

Displays information about a statically configured or dynamically learned IGMP group. 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.

Syntax

Command Parameters

count
Specifies the number of entries.
group {A.B.C.D}
Specifies the group address.
member-subnet default |{A.B.C.D/X}
Specifies the IP address and network mask.
vrf WORD<1-16>
Specifies a VRF by name.
vrfids <0-512>
Specifies a VRF by ID.

Default

None

Command Mode

Privileged EXEC

Usage Guidelines

The CLI command show ip igmp group displays both static and dynamically learned IGMP groups, and the CLI command show ip igmp static command displays only the statically configured IGMP groups. In contrast, the EDM display command under IP > IGMP > Groups displays the dynamically learned groups, and the EDM command under IP > IGMP > Static displays the statically configured IGMP groups.

Command Output

The show ip igmp group command displays the following information:

Output field

Description

GRPADDR

Indicates the multicast group address (Class D) that others want to join. Many incoming ports can use the same group address.

INPORT

Indicates the physical interface or a logical interface (VLAN), which received group reports from various sources.

MEMBER

Indicates the IP address of a source that sent a group report to join this group.

EXPIRATION

Indicates the time left before the group report expires on this port. The port updates this variable after it receives a group report.

TYPE

Indicates whether the entry is learned dynamically or is added statically.

L2ISID

Indicates the I-SID associated with the Layer 2 interface.

Examples

The following example displays information about the IGMP group. 

Switch:1#show ip igmp group

================================================================================
                           Igmp Group - GlobalRouter
================================================================================
GRPADDR         INPORT          MEMBER          EXPIRATION TYPE       L2ISID
--------------------------------------------------------------------------------
224.5.2.1       V701-1/4        62.0.1.1        214        Dynamic    40400
224.5.2.2       V702-1/4        62.0.2.1        221        Dynamic    40400
224.5.2.3       V703-1/4        62.0.3.1        217        Dynamic    40400
224.5.2.4       V704-1/4        62.0.4.1        223        Dynamic    40400

4 out of 4 group Receivers displayed

Total number of unique groups 2

The following example displays information about the IGMP group for a specific VRF. 

Switch:1# show ip igmp group vrf green

================================================================================
                           IGMP Group - GlobalRouter
================================================================================
GRPADDR         INPORT          MEMBER          EXPIRATION TYPE      
--------------------------------------------------------------------------------
233.252.0.1    V501-9/16       192.2.0.1      204        Dynamic   
233.252.0.2    V501-9/16       192.2.0.1      206        Dynamic   
233.252.0.3    V501-9/16       192.2.0.1      206        Dynamic   
233.252.0.4    V501-9/16       192.2.0.1      207        Dynamic   
233.252.0.5    V501-9/16       192.2.0.1      204        Dynamic   
233.252.0.6    V501-9/16       192.2.0.1      209        Dynamic   
233.252.0.7    V501-9/16       192.2.0.1      206        Dynamic   
233.252.0.8    V501-9/16       192.2.0.1      206        Dynamic   
233.252.0.9    V501-9/16       192.2.0.1      211        Dynamic   
233.252.0.10   V501-9/16       192.2.0.1      207        Dynamic   

10 out of 10 group Receivers displayed

Total number of unique groups 10
9037600-00 Rev AA