Viewing Multicast Group Trace Information for IGMP Snoop

About this task

Multicast group trace tracks the data flow path of the multicast streams.

Procedure

Enter Privileged EXEC mode:

enable
Display the multicast group trace for an IGMP snoop-enabled interface:

show ip igmp snoop-trace [source {A.B.C.D}] [group {A.B.C.D}]

Example

Display the multicast group trace for an IGMP snoop-enabled interface:

Switch:1>enable
Switch:1#show ip igmp snoop-trace

================================================================================
                           Snoop Trace - GlobalRouter
================================================================================
GROUP              SOURCE             IN     IN         OUT    OUT        TYPE
ADDRESS            ADDRESS            VLAN   PORT       VLAN   PORT
--------------------------------------------------------------------------------
203.0.113.17       192.0.2.7         1015   1/3        1015   1/35-1/40  ACCESS
203.0.113.20       192.0.2.7         1015   1/3        1015   1/35-1/40  ACCESS
203.0.113.19       192.0.2.7         1015   1/3        1015   1/35-1/40  ACCESS
203.0.113.18       192.0.2.7         1015   1/3        1015   1/35-1/40  ACCESS

Variable Definitions

The following table defines parameters for the show ip igmp snoop-trace command.


Variable	Value
group {A.B.C.D}	Specifies the group IP address in the format a.b.c.d.
source {A.B.C.D}	Specifies the source IP address in the format a.b.c.d.