Operation Manual – IGMPH3C S9500 Series Routing Switches Chapter 1 IGMP Configuration1-6Caution:z If the VLAN VPN is enabled on a port, the IGMP Snooping feature cannot beenabled on the VLAN to which the port belongs, and the IGMP feature cannot beenabled on the corresponding interface either.z If IGMP Snooping feature is enabled on a VLAN, or IGMP is enabled on theinterface, you cannot add a VPN-enabled port into the VLAN.1.3.2 IGMP Advanced ConfigurationIGMP advanced configuration includes:z Enabling compatibility control function of the switchz Configuring the IGMP versionz Configuring IGMP query intervalz Configuring the interval and the times of sending IGMP group-specific queriesz Configuring the present time of IGMP querierz Configuring maximum response time for IGMP query messagez Limiting the number of multicast groups on an interfacez Configuring a router to join a multicast groupz Deleting IGMP groups joined on an interfacez Configuring the filtering rule of multicast groupsz Enabling/disabling IGMP fast leave processingI. Enabling compatibility control function of the switchWith the compatibility control function enabled the switch processes the protocolmessage with the destination IP address 224.0.0.1 in the IGMP Report packet.Otherwise, the switch discards this kind of packets.Perform the following operation in system view to enable the compatibility controlfunction of the switch:To do... Use the command...Enable compatibility control function of the switch igmp-report enhance enableBy default, the compatibility control function of the switch is disabled.This command is often executed after IGMP or IGMP Spooning protocol is enabled.
