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Example: Configuring CoS-Based Forwarding for IPv6

Configure CBF next-hop maps and CBF LSP next-hop maps for IPv6 addresses. The following example shows a CBF next-hop map for IPv6 addresses.

You can configure a next-hop map with both IPv4 and IPv6 addresses, or you can configure separate next-hop maps for IPv4 and IPv6 addresses and include the from family (inet | inet6) statements at the [edit policy-options policy-options policy-statement policy-name term term-name] hierarchy level to ensure that only next-hop maps of a specified protocol are applied to a specified route.

If you do not configure separate next-hop maps and include the from family (inet | inet6) statements in the configuration, when a route uses two next hops (whether IPv4, IPv6, interface, or LSP next hop) in at least two of the specified forwarding classes, CBF is used for the route; otherwise, the CBF policy is ignored.

  1. Define the CBF next-hop map:
    [edit class-of-service]
    forwarding-policy {
    next-hop-map cbf-map {
    forwarding-class best-effort {
    next-hop [ ::192.168.139.38 192.168.139.38 ];
    }
    forwarding-class expedited-forwarding {
    next-hop [ ::192.168.140.5 192.168.140.5 ];
    }
    forwarding-class assured-forwarding {
    next-hop [ ::192.168.145.5 192.168.145.5 ];
    }
    forwarding-class network-control {
    next-hop [ ::192.168.141.2 192.168.141.2 ];
    }
    }
    }
  2. Define the CBF forwarding policy:
    [edit policy-options]
    policy-statement ls {
    then cos-next-hop-map cbf-map;
    }
  3. Export the CBF forwarding policy:
    [edit routing-options]
    forwarding-table {
    export ls;
    }


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