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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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Device Cannot Generate Layer 2 Forwarding Entries After Receiving IGMPv2 Report Messages

Device Cannot Generate Layer 2 Forwarding Entries After Receiving IGMPv2 Report Messages

Fault Description

After controllable multicast configuration is complete on a device, the device receives Report messages that IGMPv2 hosts send to order data of multicast group G. However, the device does not generate Layer 2 multicast forwarding entries for the hosts.


  1. Run the display multicast-group command and check whether the Address field in the command output contains a multicast source address.

    If the Address field contains a multicast source address, the multicast-group command has specified both a group address and a source address when creating the controllable multicast group. The device checks the group address and source address in each received IGMP Report message. However, IGMPv2 Report messages do not contain a source address, so the check fails. Therefore, no Layer 2 multicast forwarding entry can be generated based on the IGMPv2 Report messages.

Updated: 2018-09-01

Document ID: EDOC1100037948

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