CLI-based Configuration Guide - IP Unicast Routing

Procedure

• Configure a BGP device to advertise routes to all peers or peer groups.

  You can configure a BGP device to filter routes to be advertised.

  1. Run system-view

     The system view is displayed.

  2. Run bgp { as-number-plain | as-number-dot }

     The BGP view is displayed.

  3. Enter the corresponding address family view based on network type to configure BGP devices on networks.

     • Run ipv4-family { unicast | multicast }

       The IPv4 address family view is displayed.

     • Run ipv6-family [ unicast ]

       The IPv6 address family view is displayed.

  4. Perform either of the following operations to configure the BGP device to advertise routes to all peers or peer groups:
     • To filter routes based on an ACL, run the filter-policy { acl-number | acl-name acl-name } export [ protocol [ process-id ] ] or the filter-policy { acl6-number | acl6-name acl6-name } export [ protocol [ process-id ] ] command.
     • To filter routes based on an IP prefix list, run the filter-policy ip-prefix ip-prefix-name export [ protocol [ process-id ] ] or the filter-policy ipv6-prefix ipv6-prefix-name export [ protocol [ process-id ] ] command.
     NOTE:

     If an ACL has been referenced in the filter-policy command but no VPN instance is specified in the ACL rule, BGP will filter routes including public and private network routes in all address families. If a VPN instance is specified in the ACL rule, only the data traffic from the VPN instance will be filtered, and no route of this VPN instance will be filtered.

• Configure a BGP device to advertise routes to a specific peer or peer group.
  1. Run system-view

     The system view is displayed.

  2. Run bgp { as-number-plain | as-number-dot }

     The BGP view is displayed.

  3. Enter the corresponding address family view based on network type to configure BGP devices on networks.

     • Run ipv4-family { unicast | multicast }

       The IPv4 address family view is displayed.

     • Run ipv6-family [ unicast ]

       The IPv6 address family view is displayed.

  4. Perform any of the following operations to configure the BGP device to advertise routes to a specific peer or peer group:

     • To filter routes based on an ACL, run the peer { group-name | ipv4-address | ipv6-address } filter-policy { acl-number | acl-name acl-name | acl6-number | acl6-name acl6-name } export command.

     • To filter routes based on an IP prefix list, run the peer { ipv4-address | group-name } ip-prefix ip-prefix-name export or the peer { group-name | ipv6-address } ipv6-prefix ipv6-prefix-name export command.

     • To filter routes based on an AS_Path filter, run the peer { ipv4-address | group-name | ipv6-address } as-path-filter { as-path-filter-number | as-path-filter-name } export command.

     • To filter routes based on a route-policy, run the peer { ipv4-address | group-name | ipv6-address } route-policy route-policy-name export command.

     NOTE:

     The routing policy applied in the peer route-policy export command does not support a specific interface as one matching rule. That is, the routing policy does not support the if-match interface command.