OSPF Cisco IOS/NSSA

The following topology is configured on GNS3 on Cisco 7200 Routers

Setup

The Routers have the following configuration:

R1 & R2

Configuration

R1

R2

hostname R1
!
ipv6 unicast-routing
!
interface Loopback0
 ipv6 address 2001::1/128
 ipv6 ospf 1 area 0
!
interface FastEthernet0/0
 ipv6 enable
 ipv6 ospf 1 area 0
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 ipv6 enable
 ipv6 ospf 1 area 1
!
interface FastEthernet1/0
 ipv6 enable
 ipv6 ospf 1 area 0
!
!
ipv6 router ospf 1
 router-id 0.0.0.1
 log-adjacency-changes
 area 1 nssa
!
end

R1#

R2#show run
hostname R2
!
ipv6 unicast-routing
!
interface Loopback0
 ipv6 address 2001::2/128
 ipv6 ospf 1 area 0
!
interface FastEthernet0/0
 ipv6 enable
 ipv6 ospf 1 area 0
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 ipv6 enable
 ipv6 ospf 1 area 2
!
interface FastEthernet1/0
 ipv6 enable
 ipv6 ospf 1 area 0
!
ipv6 router ospf 1
 router-id 0.0.0.2
 log-adjacency-changes
 area 2 nssa
!
end

R2#

R3 & R4

R5