Configuring basic MPLS L3VPN

Configuring VPN instances:

1. (Required.) Creating a VPN instance

2. (Required.) Associating a VPN instance with an interface

3. (Optional.) Configuring route related attributes for a VPN instance

(Required.) Configuring routing between a PE and a CE

(Required.) Configuring routing between PEs

(Optional.) Configuring BGP VPNv4 route control