Users Guide

Configuration on BR
BR has BGP configured which forms BGP neighbor adjacency with Core 1.
interface Loopback0
ip address 192.168.100.1/24
!
interface ethernet1/1/1
no shutdown
no switchport
ip address 10.10.9.1
!
router bgp 20
network 192.168.100.0
neighbor 10.10.9.2 remote-as 20
address-family ipv4 unicast
Configuration on Core 1
Core 1 has both OSPF and BGP configured. Core 1 has OSPF neighbor adjacency with Core 2 and BGP neighbor adjacency
with BR. The iBGPtoOSPF prefix-list is configured and applied to a route-map. The match ip address prefix-list
iBGPtoOSPF command processes the iBGP-learned routes.
ip prefix-list iBGPtoOSPF seq 15 permit 192.168.100.0/24
route-map iBGPtoOSPF permit 20
match ip address prefix-list iBGPtoOSPF
!
interface ethernet1/1/1
no shutdown
no switchport
ip address 10.10.30.2/24
ip router ospf 10 area 0.0.0.0
!
interface ethernet1/1/2
no shutdown
no switchport
ip address 10.10.9.2/24
!
router ospf 10
router-id 2.2.2.2
redistribute bgp 20 route-map iBGPtoOSPF
!
router bgp 20
neighbor 10.10.9.1
remote-as 20
address-family ipv4 unicast
allowas-in 1
Configuration on Core 2
Core 2 has OSPF configured which forms neighbor adjacency with Core 1.
interface ethernet1/1/1
no shutdown
no switchport
Layer 3
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