5000 Series Layer 2/3 Managed Data Center Switch CLI Reference Guide
1026
Command Mode
BGP Router Config
11-5
address-family vpnv4 unicast
This command enters into VPN4Address 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.
Use the
no
command to deleie the configuration done in this mode.
address-family vpnv4 unicast
no address-family vpnv4 unicast
Parameters
None.
Default
The default is a disabled VPNv4 address family.
Command 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)#
11-6
advertisement-interval (BGP Router Config)
Use this command to configure the minimum time that must elapse between advertisements of the same
route to a given neighbor. RFC 4271 recommends the interval for internal peers be shorter than the
interval for external peers to enable fast convergence within an autonomous system. This value does not