show ip igmp group

Displays the status of Internet Group Management Protocol (IGMP) multicast groups on a device.
Syntax
show ip igmp[vrfvrf-name]group[detail]
show ip igmp[vrfvrf-name]group[group-address[detail|tracking]]
Parameters
vrfvrf-name
Specifies information for a VRF instance.
detail
Displays detailed information for IGMP multicast groups.
group-address
Specifies the address of the specific multicast group. If you do not specify a group address, information for all multicast groups is displayed.
detail
Displays information for the source list of the multicast group.
tracking
Displays information about interfaces that have tracking enabled.
Modes

User EXEC mode

The show ip igmp group command displays the following information:

Output Field

Description

Group

The address of the multicast group.

Port

The physical port on which the multicast group was received.

Intf

The virtual interface on which the multicast group was received.

Timer

Shows the number of seconds the interface can remain in exclude mode. The exclude mode changes to include mode if it does not receive an “IS_EX” or “TO_EX” message during a certain period of time. The default is 140 seconds.

Mode

Indicates the current mode of the interface: include or exclude. If the interface is in include mode, it admits traffic only from the source list. If the interface is in exclude mode, it denies traffic from the source list and accepts the rest.

Srcs

Identifies the source list that will be included or excluded on the interface.

If an IGMPv2 group is in exclude mode with Srcs at 0, the group excludes traffic from the 0 (zero) source list, which means that all traffic sources are included.?

Dyn

Shows if there is dynamically learned information.
Examples

The following example displays information for all IGMP multicast groups. 

device# show ip igmp group
Total 2 entries
-----------------------------------------------------------
Idx Group Address    Port      Intf   Mode      Timer  Srcs
---+----------------+------+------+-------+-----+-----+----
  1 232.0.0.1        e1/1/1   v30     include     0    7
  2 226.0.0.1        e1/1/2   v30     exclude    240   2
                     e1/1/3   e1/1/3  include     0    3
Total number of groups 2

The following example displays detailed information for the IGMP multicast group 239.0.0.1. 

device# show ip igmp group 239.0.0.1 detail
Total 2 entries
-------------------------------------------------------
Idx Group Address    Port    Intf   Mode    Timer  Srcs
---+----------------+------+------+-------+-----+------
  1 226.0.0.1        e1/1/2   v30    exclude   218   2
     S: 40.40.40.12     
     S: 40.40.40.11     
     S: 40.40.40.10     
     S: 40.40.40.2          (Age: 218)
     S: 40.40.40.3          (Age: 218)
    226.0.0.1        e1/1/3  e1/1/3   include     0   3
     S: 30.30.30.3          (Age: 165)
     S: 30.30.30.2          (Age: 165)
     S: 30.30.30.1          (Age: 165)

The following example displays the list of clients that belong to a particular IGMP multicast group that have tracking enabled. 

device# show ip igmp group 224.1.10.1 tracking
Total 2 entries
--------------------------------------------------------
Idx Group Address    Port    Intf    Mode    Timer  Srcs
---+----------------+------+------+-------+-------+-----
  1 226.0.0.1        e1/1/1   v30    exclude   253   3
     S: 40.40.40.12     
     S: 40.40.40.11     
     S: 40.40.40.10     
     S: 40.40.40.2          (Age: 253)
                     C: 10.10.10.1       (Age: 253)
    S: 40.40.40.3          (Age: 253)
                     C: 10.10.10.1       (Age: 253)
    226.0.0.1        e1/1/3   e1/1/3   include     0   3
     S: 30.30.30.3          (Age: 196)
                     C: 10.2.0.1         (Age: 196)
     S: 30.30.30.2          (Age: 196)
                     C: 10.2.0.1         (Age: 196)
     S: 30.30.30.1          (Age: 196)
                     C: 10.2.0.1         (Age: 196)

The following example displays information for IGMP multicast groups including MVR status. 

device# show ip igmp group detail
Total 2 entries
----------------------------------------------------------------
Idx Group Address    Port    Intf    GrpCmpV Mode    Timer  Srcs
---+----------------+------+------+-------+-------+-------------
   1  225.0.0.1    e1/1/48  v115    Ver3    exclude   245 0 

   2  232.0.0.1    e1/1/48  v115    Ver3    include   116 1 

 S: 114.0.0.10 (Age: 245) (Clients: 0)
Total number of groups 2


device> show ip igmp group

Total 1 groups
-----------------------------------------------------------------------------
Idx  Group Address    Port      Intf      GrpCmpV Mode    Timer Srcs St  Dyn
----+----------------+---------+---------+-------+-------+-----+----+---+----
   1 224.10.10.1      e1/1/48   v511      Ver2    exclude 28    0    Yes No  
 
Total number of groups 1
History
Release version Command history
08.0.95 This command was modified to include the detail keyword.
   
09.0.10 The output of this command was updated to include MVR information.
Parent topic: Show Commands