1-20To do... Use the command... RemarksEnter system view system-view —interface interface-typeinterface-numberEnter Ethernet interface/Layer2 aggregate interface view orport group view port-group manualport-group-nameRequiredUse either approachEnable multicast groupreplacementigmp-snoopingoverflow-replace [ vlanvlan-list ]RequiredDisabled by defaultBe sure to configure the maximum number of multicast groups allowed on a port (refer to ConfiguringMaximum Multicast Groups that Can Be Joined on a Port) before enabling multicast group replacement.Otherwise, the multicast group replacement functionality will not take effect.Configuring 802.1p Precedence for IGMP MessagesYou can change 802.1p precedence of IGMP messages so that they can be assigned higher forwardingpriority when congestion occurs on their outgoing ports.Configuring 802.1p precedence for IGMP messages globallyFollow these steps to configure 802.1p precedence for IGMP messages globally:To do... Use the command... RemarksEnter system view system-view —Enter IGMP-Snooping view igmp-snooping —Configure 802.1p precedencefor IGMP messages dot1p-priority priority-numberRequiredThe default 802.1p precedencefor IGMP messages is 0.Configuring 802.1p precedence for IGMP messages in a VLANFollow these steps to configure 802.1p precedence for IGMP messages in a VLAN:To do... Use the command... RemarksEnter system view system-view —Enter VLAN view vlan vlan-id —Configure 802.1p precedencefor IGMP messages in theVLANigmp-snoopingdot1p-priority priority-numberRequiredThe default 802.1p precedencefor IGMP messages is 0.
