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Field Description
rtr port The router ports, which are the ports receiving queries.
Displaying IGMP snooping errors
To display information about possible IGMP errors, enter the show ip multicast error command.
device#show ip multicast error
snoop SW processed pkt: 173, up-time 160 sec
Syntax: show ip multicast error
The following table describes the output from the show ip multicast error command.
Field Description
SW processed pkt The number of multicast packets processed by IGMP snooping.
up-time The time since the IGMP snooping is enabled.
Displaying IGMP group information
To display default, maximum, current, and configured values for system maximum parameters, use the
show default values command. The following output example does not show complete output; it
shows only IGMP group values.
device(config)#show default values
System Parameters Default Maximum Current Configured
igmp-snoop-group-add 4096 8192 5000 5000
To display information about IGMP groups, enter the show ip multicast group command.
device#show ip multicast group
p-:physical, ST:static, QR:querier, EX:exclude, IN:include, Y:yes, N:no
VL70 : 3 groups, 4 group-port, tracking_enabled
group p-port ST QR life mode source
1 224.1.1.2 1/33 no yes 120 EX 0
2 224.1.1.1 1/33 no yes 120 EX 0
3 226.1.1.1 1/35 yes yes 100 EX 0
4 226.1.1.1 1/33 yes yes 100 EX 0
In this example, an IGMP V2 group is in EXCLUDE mode with a source of 0. The group only excludes
traffic from the 0 (zero) source list, which actually means that all traffic sources are included.
To display detailed IGMP group information for a specific group, enter the show ip multicast group
detail command.
device#show ip multicast group 226.1.1.1 detail
Display group 226.1.1.1 in all interfaces in details.
p-:physical, ST:static, QR:querier, EX:exclude, IN:include, Y:yes, N:no
VL70 : 1 groups, 2 group-port, tracking_enabled
group p-port ST QR life mode source
1 226.1.1.1 1/35 yes yes 120 EX 0
group: 226.1.1.1, EX, permit 0 (source, life):
life=120, deny 0:
group p-port ST QR life mode source
2 226.1.1.1 1/33 yes yes 120 EX 0
Displaying IGMP snooping errors
FastIron Ethernet Switch IP Multicast Configuration Guide 27
53-1003085-02