Netgear XCM8806 Chassis Hardware Installation Guide - Page 1172

NETGEAR 8800 Chassis Switch CLI Manual vrname Specifies a virtual router. Default The router timeout default setting is 260 seconds. The host timeout setting is 260 seconds. Usage Guidelines Timers should be set to approximately 2.5 times the router query interval in use on the network. Specify the following: • router timeout-The maximum time, in seconds, that a router snooping entry can remain in the IGMP snooping table without receiving a router report. If a report is not received, the entry is deleted. The range is 10 to 214,748,364 seconds (6.8 years). The default setting is 260 seconds. • host timeout-The maximum time, in seconds, that a group snooping entry can remain in the IGMP snooping table without receiving a group report. If a report is not received, the entry is deleted. The range is 10 to 214,748,364 seconds. The default setting is 260 seconds. Note: The host_timeout value should be less than or equal to the query timeout value, which is defined by the following configure igmp command timers as follows: query_interval x robustness) + query_response_interval. IGMP snooping expects at least one device on every VLAN to periodically generate IGMP query messages. Without an IGMP querier, the switch eventually stops forwarding IP multicast packets to any port, because the IGMP snooping entries time out, based on the value specified in host_timeout or router_timeout. Example The following command configures the IGMP snooping timers: configure igmp snooping timer 600 600 configure igmp snooping vlan ports add static group configure igmp snooping {vlan} ports add static group Description Configures VLAN ports to receive the traffic from a multicast group, even if no IGMP joins have been received on the port. 1172 | Chapter 26. IP Multicast Commands