Monday, May 9, 2011

Lab 131 - BGP Next-Hop using Redistribution into IGP

Prerequisites: CCNP level skills.

Note!
Use the configuration from Lab 130 except for route-maps that change the next-hop.

Topology

Pic. 1 - Topology Diagram.
Icons designed by: Andrzej Szoblik - http://www.newo.pl

Task 1
Similarly to the lab 129 and 130, deal with the next hop on R1, R2 and R3, but do not use 'next-hop-self' or route-map to change the next-hop while advertising BGP prefixes in AS 123.

Solution

Task 1
Similarly to the lab 129 and 130, deal with the next hop on R1, R2 and R3, but do not use 'next-hop-self' or route-map to change the next-hop while advertising BGP prefixes in AS 123.

R1 Configuration:
!
router ospf 1
 router-id 172.16.101.1
 log-adjacency-changes
 redistribute connected subnets
 network 10.1.13.1 0.0.0.0 area 0
!

R2 Configuration:
!
router ospf 1
 router-id 172.16.102.2
 log-adjacency-changes
 redistribute connected subnets
 network 10.1.23.2 0.0.0.0 area 0
!

R3 Configuration:
!
router ospf 1
 router-id 172.16.103.3
 log-adjacency-changes
 redistribute connected subnets
 network 10.1.13.3 0.0.0.0 area 0
 network 10.1.23.3 0.0.0.0 area 0
!

Verification:
Pic. 2 - BGP Prefix from AS 50 on R1.

Pic. 3 - Reachability to 10.1.3.5 on R1.