Operation Manual – Multicast ProtocolH3C S3610&S5510 Series Ethernet Switches Chapter 2 IGMP Snooping Configuration2-11Follow these steps to configure static ports:To do... Use the command... RemarksEnter system view system-view —Enter Ethernetport viewinterface interface-typeinterface-numberEnter thecorrespondingview Enter portgroup viewport-group { manualport-group-name |aggregation agg-id }RequiredUse eithercommandConfigure the port(s) as staticmember port(s)igmp-snoopingstatic-group group-address[ source-ipsource_address ] vlanvlan-idRequiredDisabled bydefaultConfigure the port(s) as staticrouter port(s)igmp-snoopingstatic-router-port vlanvlan-idRequiredDisabled bydefaultNote:z The static (S, G) joining function is available only if a valid multicast source addressis specified and IGMP Snooping version 3 is currently running on the switch.z A static member port does not respond to queries from the IGMP querier; whenstatic (*, G) or (S, G) joining is enabled or disabled on a port, the port does not sendan unsolicited IGMP report or an IGMP leave group message.z Static member ports and static router ports never age out. To remove such a port,you need to use the corresponding command.2.4.4 Configuring Simulated JoiningGenerally, a host running IGMP responds to IGMP queries from the IGMP querier. If ahost fails to respond due to some reasons, the multicast router may deem that nomember of this multicast group exists on the network segment, and therefore willremove the corresponding forwarding path.To avoid this situation from happening, you can enable simulated joining on a port ofthe switch, namely configure the port as a simulated member host for a multicast group.When an IGMP query is heard, the simulated host gives a response. Thus, the switchcan continue receiving multicast data.A simulated host acts like a real host, as follows:z When a port is configured as a simulated member host, the switch sends anunsolicited IGMP report through that port.
