Operation Manual – MulticastH3C S5600 Series Ethernet Switches Chapter 6 IGMP Snooping Configuration6-6Task RemarksConfiguring a Static Router Port OptionalConfiguring a Port as a Simulated Group Member OptionalConfiguring a VLAN Tag for Query Message OptionalConfiguring Multicast VLAN Optional6.2.1 Enabling IGMP SnoopingFollow these steps to enable IGMP Snooping:To do... Use the command... RemarksEnter system view system-view —Enable IGMPSnooping globally igmp-snooping enableRequiredBy default, IGMP Snooping isdisabled globally.Enter VLAN view vlan vlan-id —Enable IGMPSnooping on theVLANigmp-snooping enableRequiredBy default, IGMP Snooping isdisabled on all the VLANs.Caution:z Although both Layer 2 and Layer 3 multicast protocols can run on the same switchsimultaneously, they cannot run simultaneously on a VLAN or its correspondingVLAN interface.z Before enabling IGMP Snooping in a VLAN, be sure to enable IGMP Snoopingglobally in system view; otherwise the IGMP Snooping settings will not take effect.z If IGMP Snooping and VLAN VPN are enabled on a VLAN at the same time, IGMPqueries are likely to fail to pass the VLAN. You can solve this problem by configuringVLAN tags for queries. For details, see Configuring a VLAN Tag for QueryMessages.6.2.2 Configuring the Version of IGMP SnoopingWith the development of multicast technologies, IGMPv3 has found increasingly wideapplication. In IGMPv3, a host can not only join a specific multicast group but alsoexplicitly specify to receive or reject the information from a specific multicast source.
