This command enters into VPN4 Address Family Configuration mode and sets up a routing session to carry VPN IPv4 (VPNv4) addresses across the backbone. When an iBGP neighbor is in this mode, each VPNv4 prefix is made globally unique by the addition of an 8-byte Route distinguisher (RD). Only unicast prefixes are carried to its peer.
The following commands are available in VPNv4 address family configuration mode.
- neighbor ip-address activate
- neighbor ip-address send-community extended
To exit from the VPNv4 address family mode, use the exit command.
| Default | Disabled |
| Format | address-family vpnv4 unicast |
| Mode | BGP Router Config |
Example: The following example shows how to enter the VPNv4 address family mode and configure neighbor commands:
(Router) (Config)# router bgp 10 (Router) (Config-router)# neighbor 1.1.1.1 remote-as 10 (Router) (Config-router)# address-family vpnv4 unicast (Router) (Config-router-af-vpnv4)# neighbor 1.1.1.1 activate (Router) (Config-router-af-vpnv4)# neighbor 1.1.1.1 send-community extended (Router) (Config-router-af-vpnv4)# exit (Router) (Config-router)#
