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CLI-based Configuration Guide - IP Multicast

AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R007

This document describes the principles and configurations of IP multicast, and provides configuration examples.
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Checking the Configuration

Checking the Configuration

After configuring BGP A-D multicast VPN, you can view the multicast routing table, PIM routing table, source-specific or source/group-specific Reverse Path Forwarding (RPF) route, and Share-Group information of a specified VPN instance in a multicast domain to ensure normal transmission of multicast data between VPN instances.

Prerequisites

BGP A-D multicast VPN has been configured.

Procedure

  • Run either of the following commands to check the multicast routing table:

    • display multicast { vpn-instance vpn-instance-name | all-instance } routing-table [ group-address [ mask { group-mask | group-mask-length } ] | source-address [ mask { source-mask | source-mask-length } ] | incoming-interface { interface-type interface-number | register } | outgoing-interface { include | exclude | match } { interface-type interface-number | register | none } ] * [ outgoing-interface-number [ number ] ]

    • display multicast routing-table [ group-address [ mask { group-mask | group-mask-length } ] | source-address [ mask { source-mask | source-mask-length } ] | incoming-interface { interface-type interface-number | register } | outgoing-interface { include | exclude | match } { interface-type interface-number | vpn-instance vpn-instance-name | register | none } ] * [ outgoing-interface-number [ number ] ]

  • Run one of the following commands to check the PIM routing table:

    • display pim { vpn-instance vpn-instance-name | all-instance } routing-table [ group-address [ mask { group-mask-length | group-mask } ] | source-address [ mask { source-mask-length | source-mask } ] | incoming-interface { interface-type interface-number | register } | outgoing-interface { include | exclude | match } { interface-type interface-number | register | none } | mode { dm | sm | ssm } | flags flag-value | fsm ] * [ outgoing-interface-number [ number ] ]

    • display pim routing-table [ group-address [ mask { group-mask-length | group-mask } ] | source-address [ mask { source-mask-length | source-mask } ] | incoming-interface { interface-type interface-number | register } | outgoing-interface { include | exclude | match } { interface-type interface-number | vpn-instance vpn-instance-name | register | none } | mode { dm | sm | ssm } | flags flag-value | fsm ] * [ outgoing-interface-number [ number ] ]

    • display pim [ vpn-instance vpn-instance-name | all-instance ] routing-table brief [ group-address [ mask { group-mask-length | group-mask } ] | source-address [ mask { source-mask-length | source-mask } ] | incoming-interface { interface-type interface-number | register } ] *

  • Run the display multicast [ vpn-instance vpn-instance-name | all-instance ] rpf-info source-address [ group-address ] [ rpt | spt ] command to check the source-specific or source/group-specific RPF route.
  • Run the display multicast-domain vpn-instance vpn-instance-name share-group [ local | remote ] command to check the Share-Group information of a specified VPN instance in a multicast domain.

Example

Run the display pim routing-table command to view the PIM routing table. For example:

<Huawei> display pim routing-table
 VPN-Instance: public net
 Total 0 (*, G) entry; 3 (S, G) entries

 (1.1.1.1, 225.1.1.0)
     RP: 2.2.2.2
     Protocol: pim-sm, Flag: ACT
     UpTime: 00:12:04
     Upstream interface: GigabitEthernet1/0/0
         Upstream neighbor: 192.168.2.1
         RPF prime neighbor: 192.168.2.1
     Downstream interface(s) information: None

 (1.1.1.1, 232.2.2.0)
     Protocol: pim-ssm, Flag: SG_RCVR
     UpTime: 00:36:36
     Upstream interface: GigabitEthernet1/0/0
         Upstream neighbor: 192.168.2.1
         RPF prime neighbor: 192.168.2.1
     Downstream interface(s) information:
     Total number of downstreams: 1
         1: VPN-Instance: BLUE
             Protocol: MD, UpTime: 00:36:36, Expires: -

 (3.3.3.3, 232.2.2.0)
     Protocol: pim-ssm, Flag: LOC
     UpTime: 00:36:34
     Upstream interface: LoopBack1
         Upstream neighbor: NULL
         RPF prime neighbor: NULL
     Downstream interface(s) information:
     Total number of downstreams: 1
         1: GigabitEthernet1/0/0
             Protocol: pim-ssm, UpTime: 00:36:34, Expires: 00:02:54

The command output shows that a PIM-SSM MDT is set up on the public network to carry VPN multicast services.

Run the display multicast-domain vpn-instance BLUE share-group command to view Share-Group information of a VPN instance named BLUE. For example:

<Huawei> display multicast-domain vpn-instance BLUE share-group
MD local share-group information for VPN-Instance: BLUE
  Share-group: 232.2.2.0
  MTunnel address: 3.3.3.3
MD remote share-group information for VPN-Instance: BLUE
  Share-group     Peer-address    Tunnel-type
  232.2.2.0       1.1.1.1         PIM SSM

The command output shows that the remote Share-Group address of the VPN instance BLUE is 232.2.2.0; the IP address of the remote peer is 1.1.1.1; and the tunnel type is PIM SSM.

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Updated: 2019-06-12

Document ID: EDOC1000097181

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