© Copyright Lenovo 2016 Chapter 34: Border Gateway Protocol 551Default Redistribution and Route Aggregation ExampleThis example shows you how to configure the switch to redistribute informationfrom one routing protocol to another and create an aggregate route entry in theBGP routing table to minimize the size of the routing table.As illustrated in Figure 47, you have two peer routers: an internal and an externalpeer router. Configure the G8264 to redistribute the default routes from AS 200 toAS 135. At the same time, configure for route aggregation to allow you to condensethe number of routes traversing from AS 135 to AS 200.Figure 47. Route Aggregation and Default Route Redistribution1. Configure the IP interface.2. Configure the AS number (AS 135) and router ID (10.1.1.135) .3. Configure internal peer router 1 and external peer router 2 with IPv4 addresses.4. Configure redistribution for Peer 1.Switch10.1.1.135RS G8264(config)# router bgpRS G8264(config router bgp)# as 135RS G8264(config router bgp)# exitRS G8264(config)# ip router id 10.1.1.135RS G8264(config)# router bgpRS G8264RS G8264(config router bgp)# neighbor 1 remote address 10.1.1.4RS G8264(config router bgp)# neighbor 1 remote as 135RS G8264(config router bgp)# no neighbor 1 shutdownRS G8264RS G8264(config router bgp)# neighbor 2 remote address 20.20.20.2RS G8264(config router bgp)# neighbor 2 remote as 200RS G8264(config router bgp)# no neighbor 2 shutdownRS G8264(config router bgp)# neighbor 1 redistribute default actionredistributeRS G8264(config router bgp)# neighbor 1 redistribute fixed
