Redistributing Routes into BGP

Redistributing Routes into BGP
Redistributing routes into BGP can save you a tremendous amount of time when you need BGP to
advertise numerous routes from your network. In order to configure redistribution into BGP, the following
command needs to be entered in router configuration mode:
redistribute protocol process-id
protocol - the routing protocol to redistribute.
process-id - if protocol is IGRP or EIGRP this the AS number.
- if protocol is OSPF this is the process-id.
- if protocol is RIP or IS-IS the process-id is not needed.
In Figure 8.16, eBGP will need to be configured between routers R2 and R3. R1 will not
have BGP configured. We will use the loopback interfaces on R2 and R3 for the BGP session.
R2’s loopback interface number is 0, and the address is 2.2.2.2. R3’s loopback interface number
is 0, and the address is 3.3.3.3. R1 and R2 are running an EIGRP AS 100 as their IGP. We
will want to redistribute all of the routes R2 knows into BGP. We will also want to redistribute
the Ethernet segment on R3 into BGP. The Ethernet segment on R3 does not have a routing
protocol running.