A VPNv4 address consists of an RD and an IPv4 prefix. VPNv4 routes are routes that carry VPNv4 addresses. For a PE to exchange BGP VPNv4 routes with a BGP peer, enable that peer by executing the peer enable command in BGP VPNv4 or BGP-VPN VPNv4 address family view.
In BGP VPNv4 address family view, you can configure the following settings:
- BGP VPNv4 route attributes, such as the preferred value.
- Whether to allow the local AS number to appear in the AS_PATH attribute of received route updates.
The settings in BGP VPNv4 address family view control VPNv4 route exchange between PEs.
The settings in BGP-VPN VPNv4 address family view control VPNv4 route exchange between provider PE and provider CE in nested MPLS L3VPN.