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Configuration Guide - IP Multicast

S7700 and S9700 V200R010C00

This document describes IP multicast basics and how to configure IP multicast features, including IGMP/MLD, PIM (IPv4&IPv6), MSDP, multicast VPN, Layer 3 multicast CAC, Layer 2 multicast CAC, IGMP/MLD snooping, and multicast VLAN, IPv4&IPv6 multicast route management, static multicast MAC address, multicast network.
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Configuring Layer 2 Multicast CAC for All Multicast Groups

Configuring Layer 2 Multicast CAC for All Multicast Groups

Pre-configuration Tasks

Before configuring Layer 2 multicast CAC for all multicast groups, enable IGMP snooping to implement forwarding of multicast packets.

Context

Layer 2 multicast CAC can limit the number of all multicast groups at four levels: global, VLAN, interface, and interface+VLAN. The limit values at different levels can be used together to flexibly control the number of multicast groups.

Procedure

  • Limiting the number of multicast groups globally
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      l2-multicast limit max-entry count [ except acl-number ]

      A global CAC limit is configured for all multicast groups in the system.

  • Limiting the number of multicast groups in specified VLANs
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      l2-multicast limit max-entry count vlan { vlan-id1 [ to vlan-id2 ] } &<1-10> [ except acl-number ]

      A CAC limit is configured for all multicast groups in the specified VLANs.

  • Limiting the number of multicast groups on an interface
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The interface view is displayed.

    3. Run:

      l2-multicast limit max-entry count [ except acl-number ]

      A CAC limit is configured for all multicast groups on the interface.

  • Limiting the number of multicast groups in specified VLANs on an interface
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The interface view is displayed.

    3. Run:

      l2-multicast limit max-entry count vlan { vlan-id1 [ to vlan-id2 ] } &<1-10> [ except acl-number ]

      A CAC limit is configured for all multicast groups in the specified VLANs on the interface.

Checking the Configuration

After you complete the preceding configurations, run the following commands to check the configuration.

  • Run the display l2-multicast limit configuration global command to check the global Layer 2 multicast CAC configuration.
  • Run the display l2-multicast limit configuration vlan [ vlan-id1 [ to vlan-id2 ] ] command to check the Layer 2 multicast CAC configuration in specified VLANs.
  • Run the display l2-multicast limit configuration interface interface-type interface-number command to check the Layer 2 multicast CAC configuration on an interface.
  • Run the display l2-multicast limit configuration vlan vlan-id1 [ to vlan-id2 ] interface interface-type interface-number command to check the Layer 2 multicast CAC configuration in specified VLANs on an interface.
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Updated: 2019-08-21

Document ID: EDOC1000141903

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