Configuring Graceful Restart for Snooping

You can configure graceful restart and duration time for multicast snooping. If graceful restart for multicast snooping is disabled, snooping information is lost after a Routing Engine restart.

By default, the graceful restart duration is 180 seconds (3 minutes). You can set this value between 0 and 300 seconds. If you set the duration to 0, graceful restart is effectively disabled. Set this value slightly larger than the IGMP query response interval. For more information about the IGMP query response interval, see query-response-interval.

To configure graceful restart for multicast snooping, include the graceful-restart statement:

You can include this statement at the following hierarchy levels:

• [edit bridge-domains bridge-domain-name multicast-snooping-options]
• [edit routing-instances routing-instance-name multicast-snooping-options]
• [edit routing-instances routing-instance-name bridge-domains bridge-domain-name multicast-snooping-options]
• [edit logical-systems logical-system-name routing-instances routing-instance-name multicast-snooping-options]
• [edit logical-systems logical-system-name routing-instances routing-instance-name bridge-domains bridge-domain-name multicast-snooping-options]