System information

BSR 64000 Configuration and Management Guide

12-46

Figure 12-15 Using a Loopback Interface

The following commands configure a loopback interface for Router Albany, enter the

following:

MOT(config)#interface loopback 1

MOT(config-if)#ip address 140.10.0.1 255.255.255.255

MOT(config-if)#exit

MOT(config)#router bgp 100

MOT(config-bgp)#neighbor 192.56.42.10 update-source loopback 1

Configuring a Default Route

A default route in a router IP forwarding table is used by the router if a routing entry

for a destination does not exist. By convention, a default route is represented by the

network mask combination 0.0.0.0/0.0.0.0. Any AS advertising the default route

represents itself as the gateway of last resort to other systems.

To target the default route to a specific BGP neighbor so that only that router receives

the default advertisement, use the neighbor default-originate route-map command

in Router BGP Configuration mode, as shown below:

MOT(config-bgp)#neighbor {<ip-address> | <name>} default-originate

route-map [<map-name>]

Albany

Boston

Loopback interface 0: 160.10.0.1