Dell N1100-ON Reference Manual page 1220

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:
• neighbor ip-address activate
• neighbor ip-address send-community extended
Command History
Introduced in version 6.3.0.1 firmware.
Example
The following example shows how to enter the VPN-IPv4 address family
mode and to distribute VPN4-IPv4 addresses to a neighbor with the extended
community attribute:
console(config)# router bgp 10
console(config-router)# neighbor 1.1.1.1 remote-as 5000
console(config-router)# address-family vpnv4 unicast
console(config-router-af)# neighbor 1.1.1.1 activate
Layer 3 Routing Commands
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