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If the tracking and fast leave feature is enabled, you can display the list of clients that belong to a
particular group by entering commands such as the following.
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 e6/2 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 e6/3 e6/3 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)
Syntax: show ip igmp [vrf [vrf-name ] group [ group-address [ detail ] [tracking ] ]
If you want a report for a specific multicast group, enter that group’s address for group-address . Omit
the group-address if you want a report for all multicast groups.
The vrf parameter specifies that you want to display IGMP group information for the VRF specified by
the vrf-name variable.
Enter detail if you want to display the source list of the multicast group.
Enter tracking if you want information on interfaces that have tracking enabled.
IGMP V2 and V3 statistics displayed on the report for each interface.
Output of show ip igmp group TABLE 21
This field Displays
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. An 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 current mode of the interface: include or exclude. If the interface is in Include mode, it admits
traffic only from the source list. If an 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 IGMP V2 group is in exclude mode with a #_src of 0, the group excludes traffic from 0 (zero) source
list, which means that all traffic sources are included.
IPv4 Multicast Protocols
FastIron Ethernet Switch IP Multicast Configuration Guide 153
53-1003085-02