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S600-E V200R012C00 Configuration Guide - IP Multicast

This document describes the configurations of IP multicast, including IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN replication, controllable multicast, multicast network management.
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Summary of MLD Snooping Configuration Tasks

Summary of MLD Snooping Configuration Tasks

Table 2-4 lists MLD snooping configuration tasks.

Table 2-4  MLD snooping configuration tasks

Task

Description

Configuring Basic MLD Snooping Functions

On an IPv6 network, to prevent multicast data from being flooded in a broadcast domain and ensure accurate Layer 2 multicast forwarding, configure MLD snooping on Layer 2 multicast devices. Layer 2 multicast devices then listen to and analyze MLD messages between user hosts and upstream routers to create Layer 2 multicast forwarding entries, based on which multicast data can be forwarded accurately.

Configuring MLD Snooping Proxy

MLD snooping proxy can be configured on a Layer 2 multicast device in either of the following situations:

  • MLD is disabled on the upstream Layer 3 multicast device, and no MLD querier is available on the network to maintain group membership. With MLD snooping proxy configured, the Layer 2 device functions as the MLD querier to send Query messages to receiver hosts.
  • MLD is enabled on the upstream Layer 3 multicast device. To reduce the number of MLD Report and Done messages between the Layer 3 and Layer 2 multicast devices, configure MLD snooping proxy on the Layer 2 multicast device. The Layer 2 multicast device then sends MLD Report or Done messages to the Layer 3 multicast device in place of hosts, and sends Query messages to hosts in place of the Layer 3 multicast device.
Configuring an MLD Snooping Policy

MLD snooping policies can be configured on a Layer 2 multicast device to filter out MLD messages or limit the range of multicast groups that hosts can join.

Configuring Membership Fast-Update

Quick membership update can improve efficiency of multicast services and user experience. After this function is configured, a Layer 2 multicast device quickly updates entries when hosts join or leave a multicast group.

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Updated: 2018-09-01

Document ID: EDOC1100037948

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