(Optional) Using a Routing Policy to Control VPNv4 Routes on ASBRs

Procedure

1. Run system-view

   The system view is displayed.

2. Run either of the following commands:

   • Perform either of the following operations to configure an extcommunity filter:

     To configure a VPN-Target extcommunity filter

     • To configure a basic VPN-Target extcommunity filter, run the ip extcommunity-filter { basic-extcomm-filter-num | basic basic-extcomm-filter-name } { deny | permit } { rt { as-number:nn | 4as-number:nn | ipv4-address:nn } } &<1-16> command.

     • To configure an advanced VPN-Target extcommunity filter, run the ip extcommunity-filter { advanced-extcomm-filter-num | advanced advanced-extcomm-filter-name } { deny | permit } regular-expression command.

     To configure an SoO extcommunity filter

     • To configure a basic SoO extcommunity filter, run the ip extcommunity-list soo basic basic-extcomm-filter-name [ index index-number ] { permit | deny } { site-of-origin } &<1-16> command.

     • To configure an advanced SoO extcommunity filter, run the ip extcommunity-list soo advanced advanced-extcomm-filter-name [ index index-number ] { permit | deny } regular-expression command.

   • To configure an RD filter, run the ip rd-filter rd-filter-number { deny | permit } route-distinguisher &<1-10> command.

3. Run route-policy route-policy-name permit node node

   A routing policy is configured.

4. Run either of the following commands to configure the apply clause of the routing policy for the current node as needed:

   • To configure a match rule that is based on the VPN-Target extended community attribute, run the if-match extcommunity-filter { { basic-extcomm-filter-num | adv-extcomm-filter-num } &<1-16> | basic-extcomm-filter-name | advanced-extcomm-filter-name } command.

   • To configure a match rule that is based on the SoO extended community attribute, run the if-match extcommunity-list soo extcomm-filter-name command.

   • To configure a match rule that is based on the RD attribute, run the if-match rd-filter rd-filter-number command.

5. Run quit

   Return to the system view.

6. Run bgp as-number

   The BGP view is displayed.

7. Run ipv4-family vpnv4 [ unicast ]

   The BGP-VPNv4 address family view is displayed.

8. Run peer ipv4-address route-policy route-policy-name { export | import }

   The routing policy is applied to control the import and export of VPNv4 routes.

9. Run commit

   The configuration is committed.