848 Configuring L2 Multicast Features
Configuring IGMP Snooping Querier

Beginning in Privileged EXEC mode, use the following commands to

configure IGMP snooping querier settings on the switch and on VLANs.

ip igmp snooping vlan
vlan-id
mcrtexpiretime
seconds
Specify the multicast router time-out value for to
associate with a VLAN. This command sets the number of
seconds to wait to age out an automatically-learned
multicast router port.
CTRL + Z Exit to Privileged EXEC mode.
show ip igmp snooping
groups
Shows IGMP snooping configuration on all VLANs.
show ip igmp snooping
vlan
vlan-id
View the IGMP snooping settings on the VLAN.
Command Purpose
configure Enter global configuration mode.
ip igmp snooping querier
[vlan
vlan-id
] [address
ip-address
]
Enable the IGMP snooping querier on the switch or on
the VLAN specified with the
vlan-id
parameter.
Use the optional
ip-address
parameter to specify the IP
address that the snooping querier switch should use as the
source address when generating periodic queries.
ip igmp snooping querier
query-interval
interval-
count
Set the IGMP snooping querier query interval time, which
is the amount of time in seconds that the switch waits
before sending another periodic query. The range is
1–1800 seconds.
ip igmp snooping querier
timer expiry
seconds
Set the IGMP snooping querier timer expiration period.
This is the time period, in seconds, that the switch
remains in non-querier mode after it has discovered that
there is a multicast querier in the network.
ip igmp snooping querier
version
version
Set the IGMP version of the query that the switch sends
periodically. The
version
range is 1–2.
ip igmp snooping querier
vlan-id
Enable the IGMP snooping querier on the specified
VLAN.
Command Purpose