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;

   }