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Configuration Guide - IP Multicast

S7700 and S9700 V200R013C00

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, IPv4 PIM, IPv6 PIM, MSDP, multicast VPN, layer 3 multicast CAC, IPv4 multicast route management, IPv6 multicast route management, IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN replication, layer 2 multicast CAC, multicast network management.
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Clearing IGMP Snooping Entries

Clearing IGMP Snooping Entries

Context

Static and dynamic IGMP snooping entries are cleared in different ways.

Static entries cannot be restored after being cleared. They will be created when you configure static member ports.

When dynamic entries in a forwarding table are cleared, hosts in the VLAN temporarily do not receive the multicast packets. These hosts can receive multicast packets again only after they send IGMP Report messages and the switch creates forwarding entries.

Procedure

  • Run the undo l2-multicast static-group [ source-address source-ip-address ] group-address group-ip-address vlan { all | { vlan-id1 [ to vlan-id2 ] } &<1-10> } command in the interface view to remove the interface from a multicast group.

    You can run the following commands to batch remove multicast group addresses from an interface.

    • undo l2-multicast static-group [ source-address source-ip-address ] group-address group-ip-address1 to group-ip-address2 vlan vlan-id
    • undo l2-multicast static-group [ source-address source-ip-address ] group-address all vlan { all | { vlan-id1 [ to vlan-id2 ] } &<1-10> }

  • Run the reset igmp-snooping group { all | vlan { all | vlan-id [ [ source-address source-address ] group-address group-address ] } } command in the user view to remove dynamic entries in a forwarding table.
  • Run the reset igmp-snooping qinq-port-info interface interface-type interface-number command in the user view to clear multicast group membership on a QinQ or Dot1q termination sub-interface.
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Updated: 2019-04-08

Document ID: EDOC1100065742

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