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Configuration Guide - IP Multicast

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.
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(Optional) Suppressing Report and Leave Messages

(Optional) Suppressing Report and Leave Messages

Context

IGMP periodically sends Query and Response messages to maintain group memberships. When multiple members join the same group, they send a large number of duplicate Report messages to the IGMP router. When IGMPv2 or IGMPv3 hosts leave a multicast group, they send a large number of duplicate Leave messages. To conserve bandwidth, configure suppression of Report and Leave messages on the Layer 2 device.

After message suppression is configured, the switch forwards a Report message only when the first member joins a multicast group or when it receives an IGMP Query message. The switch sends a Leave message only when the last member leaves the multicast group.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run igmp snooping report-suppress

    The Report and Leave messages are suppressed.

    NOTE:

    When configuring message suppression, pay attention to the following points:

    • After message suppression is configured in a VLAN, Layer 3 multicast functions (such as IGMP and PIM) cannot be enabled on the corresponding VLANIF interface.
    • IGMP snooping proxy and message suppression cannot be configured in the same VLAN.

  4. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100075361

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