Configuring MLD report suppression
When a Layer 2 device receives an MLD report from an IPv6 multicast group member, the Layer 2 device forwards the message to the Layer 3 device directly connected with it. Thus, when multiple members belonging to an IPv6 multicast group exist on the Layer 2 device, the Layer 3 device directly connected with it will receive duplicate MLD reports from these members.
With the MLD report suppression function enabled, within a query interval, the Layer 2 device forwards only the first MLD report of an IPv6 group to the Layer 3 device and will not forward the subsequent MLD reports from the same multicast group to the Layer 3 device. This helps reduce the number of packets being transmitted over the network.
Follow these steps to configure MLD report suppression:
To do... | Use the command... | Remarks |
---|---|---|
Enter system view | system-view | — |
Enter MLD snooping view | mld-snooping | — |
Enable MLD report suppression | report-aggregation | Optional Enabled by default |
![]() | CAUTION: On an MLD snooping proxy, MLD membership reports are suppressed if the entries for the corresponding groups exist in the forwarding table, whether the suppression function is enabled or not. | |