Technical Documentation

Configuring a Selective Provider Tunnel Using Wildcards

When you configure a selective provider tunnel For MBGP MVPNs (also referred to as next-generation Layer 3 multicast VPNs), you can use wildcards for the multicast group and source address prefixes. Using wildcards enables a PE router to use a single route to advertise the binding of multiple multicast streams of a given MVPN customer to a single provider's tunnel, as described in http://tools.ietf.org/html/draft-rekhter-mvpn-wildcard-spmsi-00.

Sharing a single route improves control plane scalability, because it reduces the number of S-PMSI autodiscovery routes.

To configure a selective provider tunnel using wildcards:

  1. Configure a wildcard group matching any group IPv4 address and a wildcard source for (*,*) join messages.

    [edit routing-instances vpna provider-tunnel selective]
    user@router# set wildcard-group-inet wildcard-source
  2. Configure a wildcard group matching any group IPv6 address and a wildcard source for (*,*) join messages.

    [edit routing-instances vpna provider-tunnel selective]
    user@router# set wildcard-group-inet6 wildcard-source
  3. Configure an IP prefix of a multicast group and a wildcard source for (*,G) join messages.

    [edit routing-instances vpna provider-tunnel selective]
    user@router# set group 224.0.0/24 wildcard-source
  4. Map the IPv4 join messages to a selective provider tunnel.

    [edit routing-instances vpna provider-tunnel selective wildcard-group-inet wildcard-source]
    user@router# set rsvp-te label-switched-path-template provider-tunnel1
  5. Map the IPv6 join messages to a selective provider tunnel.

    [edit routing-instances vpna provider-tunnel selective wildcard-group-inet6 wildcard-source]
    user@router# set rsvp-te label-switched-path-template provider-tunnel2
  6. Map the (*,224.0.0/24) join messages to a selective provider tunnel.

    [edit routing-instances vpna provider-tunnel selective group 224.0.0/24 wildcard-source]
    user@router# set rsvp-te label-switched-path-template provider-tunnel3

Published: 2010-04-28