Users Guide

BGP 1435
Network Example
The following configuration uses the network command to inject received
iBGP routes into the BGP routing table. The network mask allows sub-
netting and super-netting. An alternative to the network command is to use
the redistribute command.
Interface Gi1/0/1 is configured as a member of VLAN 10, VLAN 10 is assigned
an IP address, IP routing is enabled, and BGP router 65001 is created with a
router ID of 129.168.1.254. A static subnet route 129.168.0.X is created for
VLAN 10. An iBGP neighbor 129.168.0.254 is configured and the network
129.168.x.X is configured to super-net the 129.168.0.x advertisement. The
neighbor state is configured to follow loopback 0.
console#configure
console(config)#vlan 10
console(config-vlan)#exit
console(config)#interface gi1/0/1
console(config-if-Gi1/0/1)#switchport access vlan 10
console(config-if-Gi1/0/1)#exit
console(config)#interface vlan 10
console(config-if-vlan10)#ip address 129.168.10.2 /24
console(config-if-vlan10)#exit
console(config)#int loopback 0
console(config-if-loopback0)#ip address 129.168.1.254 /24
console(config-if-loopback0)#exit
console(config)#ip routing
console(config)#router bgp 65001
console(config-router)#bgp router-id 129.168.1.254
console(config-router)#neighbor 129.168.0.254 remote-as 65001
console(config-router)#neighbor 129.168.0.254 update-source
loopback 0
console(config-router)#network 129.168.0.0 mask 255.255.0.0
console(config-router)#exit