Operation Manual – MulticastH3C S7500E Series Ethernet Switches Chapter 2 IGMP Snooping Configuration2-21To do... Use the command... RemarksEnter system view system-view —Enter IGMP Snoopingview igmp-snooping —Enable IGMP reportsuppression report-aggregation OptionalEnabled by default2.6.6 Configuring Maximum Multicast Groups that Can Be Joined on a PortBy configuring the maximum number of multicast groups that can be joined on a port,you can limit the number of multicast programs on-demand available to users, thus toregulate traffic on the port.Follow these steps to configure the maximum number of multicast groups that can bejoined on a port or 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 eithercommand.Configure the maximum numberof multicast groups that can bejoined on the port(s)igmp-snoopinggroup-limit limit [ vlanvlan-list ]Optional512 by default.Note:z When the number of multicast groups a port has joined reaches the maximumnumber configured, the system deletes all the forwarding entries persistent to thatport from the IGMP Snooping forwarding table, and the hosts on this port need tojoin the multicast groups again.z If you have configured static or simulated joins on a port, however, when the numberof multicast groups on the port exceeds the configured threshold, the systemdeletes all the forwarding entries persistent to that port from the IGMP Snoopingforwarding table and applies the static or simulated joins again, until the number ofmulticast groups joined by the port comes back within the configured threshold.
