Operation Manual – MulticastH3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration3-8Note:z MLD Snooping must be enabled globally before it can be enabled in a VLAN.z After enabling MLD Snooping in a VLAN, you cannot enable MLD and/or IPv6 PIMon the corresponding VLAN interface, and vice versa.z When you enable MLD Snooping in a specified VLAN, this function takes effect forEthernet ports in this VLAN only.3.3.3 Configuring the Version of MLD SnoopingBy configuring the MLD Snooping version, you actually configure the version of MLDmessages that MLD Snooping can process.z MLD Snooping version 1 can process MLDv1 messages, but cannot analyze andprocess MLDv2 messages, which will be flooded in the VLAN.z MLD Snooping version 2 can process MLDv1 and MLDv2 messages.Follow these steps to configure the version of MLD Snooping:To do… Use the command… RemarksEnter system view system-view —Enter VLAN view vlan vlan-id —Configure the version ofMLD Snoopingmld-snooping versionversion-numberOptionalVersion 1 by defaultCaution:If you switch MLD Snooping from version 2 to version 1, the system will clear all MLDSnooping forwarding entries from dynamic joins, and will:z Keep forwarding entries from version 2 static (*, G) joins;z Clear forwarding entries from version 2 static (S, G) joins, which will be restoredwhen MLD Snooping is switched back to version 2.For details about static joins, Refer to Configuring Static Ports.3.4 Configuring MLD Snooping Port Functions3.4.1 Configuration PrerequisitesBefore configuring MLD Snooping port functions, complete the following tasks:z Enable MLD Snooping in the VLAN
