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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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(Optional) Configuring Prompt Response to Layer 2 Network Topology Changes

(Optional) Configuring Prompt Response to Layer 2 Network Topology Changes

Prompt response to Layer 2 network topology changes enables a device to correctly forward multicast data based on the current network topology, ensuring uninterrupted service forwarding.

Context

When a Layer 2 network topology changes, forwarding paths of multicast messages in a VLAN or VSI may change. After prompt response to Layer 2 network topology changes is configured on a device, the device will send an MLD Query message upon a link fault. After receiving the MLD Query message, hosts will reply with MLD Report messages if they need to the data. Based on the received MLD Report messages, the device updates information about multicast group member interfaces and switches multicast data traffic to the new forwarding path quickly.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run mld-snooping send-query enable

    Prompt response to Layer 2 network topology changes is configured.

    When the device senses Layer 2 network topology changes, it sends an MLD general Query message. This enables the device to quickly update member interface information and implement non-stop data forwarding for downstream user hosts.

  3. (Optional) Run mld-snooping send-query source-address ip-address

    A source IP address is set for MLD general Query messages.

  4. Run commit

    The configuration is committed.

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Updated: 2019-01-03

Document ID: EDOC1100055017

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