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Switch # show ip igmp interface vlan1
Vlan1 is up, line protocol is up
Internet address is 192.168.1.11, subnet mask is 255.255.255.0
IGMP is enabled, I am querier
IGMP current version is V2
IGMP query interval is 125s
IGMP querier timeout is 265s
IGMP max query response time is 10s
Inboud IGMP access group is not set
Multicast routing is enable on interface
Multicast TTL threshold is 1
Multicast designed router (DR) is 192.168.1.22
Muticast groups joined by this system: 0
16.6.4.1.3 debug ip igmp event
Command: debug ip igmp event
Function: Enable the debug function for displaying IGMP events: the "no" format of this
command disables this debug function.
Parameter: N/A.
Default: Disabled.
Command mode: Admin Mode
Usage Guide: If detailed information about IGMP events is required, this debug command
can be used.
Example:
Switch# debug ip igmp event
igmp event debug is on
Switch#
01: 04: 30: 56: IGMP: Group 224.1.1.1 on interface vlan1 timed out
16.6.4.1.4 debug ip igmp packet
Command: debug ip igmp packet
Function: Enable the IGMP packet debug function; the “no debug ip ospf packet”
command disables this debug function.
Parameter: N/A.
Default: Disabled.
Command mode: Admin Mode
Usage Guide: If information about IGMP packets is required, this debug command can be