SMC Networks ES4704BD Manual page 686

Command Mode: Admin Mode
Usage Guide: Enable debugging switch if querying IGMP event information
Example:
Switch# debug igmp event
igmp event debug is on
Switch# 01:04:30:56: IGMP: Group 224.1.1.1 on interface vlan1 timed out
17.6.5.1.2 debug igmp packet
Command: debug igmp packet
no debug igmp packet
Function: Enable debugging switch of IGMP message information; the "no debug igmp
packet" command disenables the debugging switch
Parameter: None
Default: Disabled
Command Mode: Admin Mode
Usage Guide: Enable the debugging switch if querying IGMP message information.
Example:
Switch# debug igmp packet
igmp packet debug is on
Switch #02:17:38:58: IGMP: Send membership query on dvmrp2 for 0.0.0.0
02:17:38:58: IGMP: Received membership query on dvmrp2 from 192.168.1.11 for 0.0
.0.0
02:17:39:26: IGMP: Send membership query on vlan1 for 0.0.0.0
02:17:39:26: IGMP: Received membership query on dvmrp2 from 192.168.1.11 for 0.0
.0.0
17.6.5.1.3 show ip igmp groups
Command: show ip igmp groups [<A.B.C.D>] [detail]
Function: Display IGMP group information
Parameter: <group_addr> is group address, namely querying specified group
information;
Detail expresses group information in detail
Default: Do not display
Command Mode: Admin Mode
Example:
Switch (config)#show ip igmp groups
IGMP Connected Group Membership (2 group(s) joined)
Group Address Interface
226.0.0.1 Vlan1
Uptime Expires
00:00:01 00:04:19 1.1.1.1
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