(Optional) Enabling an RR to Modify Route Attributes Using an Export Policy

Procedure

1. Run system-view

   The system view is displayed.

2. Run bgp as-number

   The BGP view is displayed.

3. Run ipv6-family unicast

   The IPv6 unicast address family view is displayed.

4. Run reflect change-path-attribute

   You can enable the RR to modify the route attributes of the BGP4+ routes based on the export policy.

   After you enable the reflect change-path-attribute command on an RR, the configurations of the RR attributes modified using the export policy take effect immediately. Perform the following operations:

   • Run the apply as-path command to modify the AS-Path attributes of BGP4+ routes.
   • Run the apply comm-filter delete command to delete all community attributes from a BGP4+ route.
   • Run the apply community command to modify the AS-Path attributes of BGP4+ routes.
   • Run the apply large-community command to change the Large-Community attribute of BGP4+ routes.
   • Run the apply cost command to modify the MED of BGP4+ routes.
   • Run the apply ipv6 next-hop command to modify the next hop of BGP4+ routes.
   • Run the apply local-preference command to modify the local preference of BGP4+ routes.
   • Run the apply origin command to modify the Origin attributes of BGP4+ routes.
   • Run the apply extcommunity command to modify the VPN-Target extended community attributes of BGP4+ routes.
   

   After the reflect change-path-attribute command is run on the RR, the peer route-policy export command takes precedence over the peer next-hop-invariable and peer next-hop-local commands.

5. Run commit

   The configuration is committed.