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Configuring IGMP Snooping
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
Disabling IGMP Report Suppression
Note
IGMP report suppression is supported only when the multicast query has IGMPv1 and IGMPv2 reports.
This feature is not supported when the query includes IGMPv3 reports.
IGMP report suppression is enabled by default. When it is enabled, the switch forwards only one IGMP
report per multicast router query. When report suppression is disabled, all IGMP reports are forwarded
to the multicast routers.
Beginning in privileged EXEC mode, follow these steps to disable IGMP report suppression:
Command
Step 1
configure terminal
Step 2
no ip igmp snooping report-suppression
Step 3
end
Step 4
show ip igmp snooping
Step 5
copy running-config startup-config
To re-enable IGMP report suppression, use the ip igmp snooping report-suppression global
configuration command.
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
20-14
Chapter 20
Purpose
Enter global configuration mode.
Disable IGMP report suppression.
Return to privileged EXEC mode.
Verify that IGMP report suppression is disabled.
(Optional) Save your entries in the configuration file.
Configuring IGMP Snooping and MVR
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Troubleshooting
