21-13
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 21 Configuring IGMP Snooping and MVR
Configuring IGMP Snooping
To enable the IGMP snooping querier feature in a VLAN, follow these steps:
This example shows how to set the IGMP snooping querier source address to 10.0.0.64:
Switch# configure terminal
Switch(config)# ip igmp snooping querier 10.0.0.64
Switch(config)# end
This example shows how to set the IGMP snooping querier maximum response time to 25 seconds:
Switch# configure terminal
Switch(config)# ip igmp snooping querier query-interval 25
Switch(config)# end
This example shows how to set the IGMP snooping querier timeout to 60 seconds:
Switch# configure terminal
Switch(config)# ip igmp snooping querier timeout expiry 60
Switch(config)# end
This example shows how to set the IGMP snooping querier feature to version 2:
Switch# configure terminal
Switch(config)# no ip igmp snooping querier version 2
Switch(config)# end
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
ip igmp snooping querier Enable the IGMP snooping querier.
Step 3
ip igmp snooping querier ip_address (Optional) Specify an IP address for the IGMP snooping querier. If
you do not specify an IP address, the querier tries to use the global IP
address configured for the IGMP querier.
Note The IGMP snooping querier does not generate an IGMP
general query if it cannot find an IP address on the switch.
Step 4
ip igmp snooping querier query-interval
interval-count
(Optional) Set the interval between IGMP queriers. The range is 1 to
18000 seconds.
Step 5
ip igmp snooping querier tcn query [count
count | interval interval]
(Optional) Set the time between Topology Change Notification
(TCN) queries. The count range is 1 to 10. The interval range is 1 to
255 seconds.
Step 6
ip igmp snooping querier timer expiry
timeout
(Optional) Set the length of time until the IGMP querier expires.The
range is 60 to 300 seconds.
Step 7
ip igmp snooping querier version version (Optional) Select the IGMP version number that the querier feature
uses. Select 1 or 2.
Step 8
end Return to privileged EXEC mode.
Step 9
show ip igmp snooping vlan vlan-id (Optional) Verify that the IGMP snooping querier is enabled on the
VLAN interface. The VLAN ID range is 1 to 1001 and 1006 to 4094.
Step 10
copy running-config startup-config (Optional) Save your entries in the configuration file.
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