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CLI-based Configuration Guide - IP Multicast

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

This document describes the concepts and configuration procedures of IP Service features on the device, and provides the configuration examples.
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Discarding of Unknown Multicast Flows

Discarding of Unknown Multicast Flows

Context

Unknown multicast flows are multicast data flows that match no entry in the multicast forwarding table. By default, the industrial switch router broadcasts unknown multicast flows in the corresponding VLAN. Enabling the discarding of unknown multicast flows reduces instant bandwidth usage compared with the broadcast mode.

NOTE:

AR550C-4GE, AR550C-2C6GE and AR550C-2C6GE-2D do not support this function.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run multicast drop-unknown

    The industrial switch router is configured to discard unknown multicast flows.

    NOTE:

    After the multicast drop-unknown command is run, the industrial switch router discards all unknown multicast packets, including the protocol packets that are transparently transmitted within the VLAN and use the reserved multicast address.

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Updated: 2019-08-09

Document ID: EDOC1100034230

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