Users Guide

Layer 3 Routing Commands 1247
ASNs 0, 56320–64511, and 65535 are reserved cannot be used.
Command History
Introduced in version 6.2.0.1 firmware.
Example
console(config-router)# address-family ipv6
address-family vpnv4 unicast
Use the address-family vpnv4 unicast command to configure a BGP routing
session to advertise VPN IPv4 prefixes.
Use the no form of this command to delete the VPN IPv4 configuration.
Syntax
address-family vpn4 unicast
no address-family vpn4 unicast
Default Configuration
VPN-IPv4 address family mode is not configured by default.
Command Mode
Router BGP Configuration mode
User Guidelines
When an iBGP neighbor is configured in this mode, each VPN-IPv4 prefix is
made globally unique by the addition of an 8-byte route distinguisher (RD).
Only unicast prefixes are advertised to the iBGP neighbor. To exit from VPN-
IPv4 address family mode, use the exit command.
This command enters VPN-IPv4 address family configuration mode. All
neighbor commands available in IPv4 Address Family configuration mode are
applicable to this mode as well.
Two additional options to the neighbor command are available in VPN-IPv4
address family configuration mode. See the bold keywords in the commands
below for the additions: