Configuring a BGP Extended Community

This section describes how to add a BGP extended community, that is, the color extended community, to routes through a route-policy, enabling the routes to perform SRv6 recursion based on the color value.

Context

The route coloring process is as follows:

Configure a route-policy and set a specific color value for the desired route.
Apply the route-policy to a BGP peer or a VPN instance as an import or export policy.

Procedure

Configure a route-policy.
1. Run system-view
  The system view is displayed.
2. Run route-policy route-policy-name { deny | permit } node node
  A route-policy with a specified node is created and the route-policy view is displayed.
3. (Optional) Configure an if-match clause as a route-policy filter criterion. You can add or modify the color extended community only for a route-policy that meets the filter criterion.
  For details about the configuration, see (Optional) Configuring an if-match Clause.
4. Run apply extcommunity color color
  The BGP color extended community is configured.
  
  The color value ranges from 0 to 4294967295. However, it can only be set to 0 at present.
5. Run commit
  The configuration is committed.
Apply the route-policy.
- Apply the route-policy to a BGP IPv4 unicast peer.
  1. Run system-view
    The system view is displayed.
  2. Run bgp as-number
    The BGP view is displayed.
  3. Run peer { ipv4-address | group-name } as-number as-number
    A BGP peer is specified.
  4. Run ipv4-family unicast
    The IPv4 unicast address family view is displayed.
  5. Run peer { ipv4-address | group-name } route-policy route-policy-name { import | export }
    The BGP import or export route-policy is applied.
  6. Run commit
    The configuration is committed.
- Apply the route-policy to a BGP IPv6 unicast peer.
  1. Run system-view
    The system view is displayed.
  2. Run bgp as-number
    The BGP view is displayed.
  3. Run peer { ipv6-address | group-name } as-number as-number
    A BGP peer is specified.
  4. Run ipv6-family unicast
    The IPv6 unicast address family view is displayed.
  5. Run peer { ipv6-address | group-name } route-policy route-policy-name { import | export }
    The BGP import or export route-policy is applied.
  6. Run commit
    The configuration is committed.
- Apply the route-policy to a BGP VPNv4 peer.
  1. Run system-view
    The system view is displayed.
  2. Run bgp as-number
    The BGP view is displayed.
  3. Run peer { ipv6-address | group-name } as-number as-number
    A BGP peer is created.
  4. Run ipv4-family vpnv4
    The BGP VPNv4 address family view is displayed.
  5. Run peer { ipv6-address | group-name } enable
    The BGP VPNv4 peer relationship is enabled.
  6. Run peer { ipv6-address | group-name } route-policy route-policy-name { import | export }
    The BGP import or export route-policy is applied.
  7. Run commit
    The configuration is committed.
- Apply the route-policy to a BGP EVPN peer.
  1. Run system-view
    The system view is displayed.
  2. Run bgp as-number
    The BGP view is displayed.
  3. Run peer { ipv6-address | group-name } as-number as-number
    A BGP peer is created.
  4. Run l2vpn-family evpn
    The BGP EVPN address family view is displayed.
  5. Run peer { ipv6-address | group-name } enable
    The BGP EVPN peer relationship is enabled.
  6. Run peer { ipv6-address | group-name } route-policy route-policy-name { import | export }
    The BGP EVPN import or export route-policy is applied.
  7. Run commit
    The configuration is committed.
- Apply the route-policy to a VPN instance IPv4 address family.
  1. Run system-view
    The system view is displayed.
  2. Run ip vpn-instance vpn-instance-name
    The VPN instance view is displayed.
  3. Run ipv4-family
    The VPN instance IPv4 address family view is displayed.
  4. Run import route-policy policy-name
    An import route-policy is configured for the VPN instance IPv4 address family.
  5. Run export route-policy policy-name
    An export route-policy is configured for the VPN instance IPv4 address family.
  6. Run commit
    The configuration is committed.
- Apply the route-policy to a VPN instance IPv6 address family.
  1. Run system-view
    The system view is displayed.
  2. Run ip vpn-instance vpn-instance-name
    The VPN instance view is displayed.
  3. Run ipv6-family
    The VPN instance IPv6 address family view is displayed.
  4. Run import route-policy policy-name
    The import route-policy for the VPN instance IPv6 address family is applied.
  5. Run export route-policy policy-name
    The export route-policy for the VPN instance IPv6 address family is applied.
  6. Run commit
    The configuration is committed.