Setting the Aging Time of Group Member Ports
Context
When the member port receives a Report message from a downstream host, the device sets the aging time to: Robustness variable x General Query interval + Maximum response time for General Query messages.
When the member port receives a Leave message from a downstream host, the device sets the aging time to: Last member query interval x Robustness variable.
When deploying a Layer 2 multicast network, ensure that all the Layer 2 multicast devices use the same parameter values to calculate the aging time of dynamic group member ports, especially the IGMP snooping general query interval. Otherwise, errors may occur in Layer 2 multicast forwarding.
Procedure
- Run system-view
The system view is displayed.
- Run vlan vlan-id
The VLAN view is displayed.
- Run igmp-snooping query-interval query-interval
The IGMP snooping general query interval is configured.
By default, the IGMP snooping general query interval is 60 seconds.
- Run igmp-snooping robust-count robust-count
The IGMP snooping robustness variable is configured.
By default, the IGMP snooping robustness variable is 2.
- Run igmp-snooping max-response-time max-response-time
The IGMP snooping maximum response time is set.
By default, the IGMP snooping maximum response time is 10 seconds.
- Run igmp-snooping lastmember-queryinterval lastmember-queryinterval
The IGMP snooping last member query interval is configured.
By default, the IGMP snooping last member query interval is 1 second.