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Configuration Guide - IP Multicast

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.
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Example for Configuring the MLD Snooping Proxy

Example for Configuring the MLD Snooping Proxy

Networking Requirements

In Figure 10-10, the router connects to the user network through the Layer 2 Switch on an IPv6 network, and runs MLDv1. There are many receiver hosts on the network. The administrator requires that the router should not be overloaded by too many MLD packets.

Figure 10-10 Network diagram for MLD snooping proxy configuration

Configuration Roadmap

To meet the requirement, configure MLD snooping proxy on the Switch.

  1. Create a VLAN and add interfaces to the VLAN.

  2. Enable MLD snooping globally and in a VLAN so that users can receive multicast data.

  3. Configure the MLD snooping proxy to reduce the number of MLD messages exchanged between the Switch and the router.

Procedure

  1. Create a VLAN and add interfaces to the VLAN.

    <HUAWEI> system-view
    [~HUAWEI] sysname Switch
    [*HUAWEI] commit
    [~Switch] vlan 10
    [*Switch-vlan10] quit
    [*Switch] interface 10ge 1/0/1
    [*Switch-10GE1/0/1] port default vlan 10
    [*Switch-10GE1/0/1] quit
    [*Switch] interface 10ge 1/0/2
    [*Switch-10GE1/0/2] port default vlan 10
    [*Switch-10GE1/0/2] quit
    [*Switch] interface 10ge 1/0/3
    [*Switch-10GE1/0/3] port link-type trunk
    [*Switch-10GE1/0/3] port trunk allow-pass vlan 10
    [*Switch-10GE1/0/3] commit
    [~Switch-10GE1/0/3] quit

  2. Enable MLD snooping.

    # Enable MLD snooping globally.

    [~Switch] mld snooping enable

    # Enable MLD snooping in VLAN 10.

    [*Switch] vlan 10
    [*Switch-vlan10] mld snooping enable
    

    # Set the MLD snooping version to v2 so that the Switch can process MLD messages of all versions.

    [*Switch-vlan10] mld snooping version 2
    [*Switch-vlan10] commit
    
    NOTE:

    The CE6810LI does not support this command, and can process only MLDv1 messages.

  3. Enable MLD snooping proxy.

    [~Switch-vlan10] mld snooping proxy
    [*Switch-vlan10] commit
    [~Switch-vlan10] quit

  4. Disable the Switch from sending Query messages to the upstream interface.

    [~Switch] interface 10ge 1/0/3
    [~Switch-10GE1/0/3] mld snooping proxy-uplink-port vlan 10
    [*Switch-10GE1/0/3] commit
    [~Switch-10GE1/0/3] quit

  5. Verify the configuration.

    # Check MLD message statistics on the Switch.

    [~Switch] display mld snooping statistics vlan 10
     MLD Snooping Packets Counter:
       Statistics for VLAN 10
         Receive V1 Report:          0
         Receive V2 Report:          32
         Receive V1 Query:           0
         Receive V2 Query:           30
         Receive Done:               0
         Receive Pim Hello:          0
         Send Query (S=0):           0
         Send Query (S!=0):          0
         Proxy Send General Query:               13
         Proxy Send Group-Specific Query:        0
         Proxy Send Group-Source-Specific Query: 0
         Recv Invalid Packet:                    0
         Recv Ignore Packet:                     0
    

    The command output shows that the Switch used as the MLD snooping proxy sends General Query messages and the MLD snooping proxy takes effect.

Configuration Files

  • Switch configuration file

    #
    sysname Switch
    #
    vlan batch 10
    #
    mld snooping enable
    #
    vlan 10
     mld snooping enable
     mld snooping proxy
    #
    interface 10GE1/0/1
     port default vlan 10
    #
    interface 10GE1/0/2
     port default vlan 10
    #
    interface 10GE1/0/3
     port link-type trunk
     port trunk allow-pass vlan 10
     mld snooping proxy-uplink-port vlan 10 
    #
    return
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Updated: 2019-04-20

Document ID: EDOC1100075361

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