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44 Switching Configuration
Example #2: Configure IGMP Snooping Querier Properties
The first command in this example sets the IGMP Querier Query Interval time to 100. This means that
the switch waits 100 seconds before sending another general query. The second command sets the IGMP
Querier timer expiration period to 100. This means that the switch remains in Non-Querier mode for
100 seconds after it has discovered that there is a Multicast Querier in the network.
console(config)#ip igmp snooping querier query-interval 100
console(config)#ip igmp snooping querier timer expiry 100
Example #3: Show IGMP Snooping Querier Information
console#show ip igmp snooping querier
Global IGMP Snooping querier status
-----------------------------------
IGMP Snooping Querier Mode..................... Enable
Querier Address................................ 10.10.10.33
IGMP Version................................... 2
Querier Query Interval......................... 100
Querier Expiry Interval........................ 100
Example #4: Enable IGMP Snooping Querier on a VLAN
To configure IGMP Snooping Querier on a VLAN, enter VLAN Database mode. The first ip igmp
snooping command in this example enables the IGMP snooping querier on VLAN 10. The second ip
igmp snooping command specifies the IP address that the snooping querier switch should use as
source address when generating periodic queries. The final command enables the Snooping Querier to
participate in the Querier Election process when it discovers the presence of another Querier in the
VLAN.
NOTE: For IGMP Snooping Querier functionality to be operationally enabled on the VLAN, IGMP Snooping and
IGMP Snooping Querier must both be enabled globally on the switch.
console(config)#vlan database
console(config-vlan)#ip igmp snooping querier 10
console(config-vlan)#ip igmp snooping querier 10 address 10.10.11.40
console(config-vlan)#ip igmp snooping querier election participate 10