OSPFv3 Config

This time I will configure OSPFv3 network, I will use the following network topology:

Since I realize that I might need to configure router as frame-relay switch, in the exam, I don’t use the GNS built-in frame-relay switch anymore.

 So the following setup is very clear and simple beside the fact that R1 and R2 are connected through frame-relay cloud in NBMA mode and not in PtP  (which is much easier to config). Also all IPv6 addresses are derived using EUI-64.

So the FRS config:

frame-relay switching

 !
interface Serial0/0
 no ip address
 encapsulation frame-relay
 clock rate 128000
 frame-relay interface-dlci 102
  load-interval 30
 frame-relay intf-type dce
 frame-relay route 102 interface Serial0/1 201
!
interface Serial0/1
 no ip address
 encapsulation frame-relay
 clock rate 128000
 frame-relay interface-dlci 201
  load-interval 30
 frame-relay intf-type dce
 frame-relay route 201 interface Serial0/0 102

R1 Config:

ipv6 unicast-routing

!

interface FastEthernet0/0
 no ip address
 speed 100
 full-duplex
 ipv6 address 2001:FE:13:13::/64 eui-64
 ipv6 ospf 1 area 13
!
interface Serial0/0
 ip address 10.1.12.1 255.255.255.0
 encapsulation frame-relay
 ipv6 address 2001:FE:12:12::/64 eui-64
 ipv6 ospf neighbor FE80::C201:1BFF:FEC8:0
 ipv6 ospf 1 area 0
 clock rate 2000000
 no arp frame-relay
 frame-relay map ipv6 FE80::C201:1BFF:FEC8:0 102 broadcast
 frame-relay interface-dlci 102
 no frame-relay inverse-arp
!

ipv6 router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes

R2 Config:

ipv6 unicast-routing

!   
interface FastEthernet0/0
 no ip address
 speed 100
 full-duplex
 ipv6 address 2001:FE:24:24::/64 eui-64
 ipv6 ospf 1 area 24
!
interface Serial0/0
 ip address 10.1.12.2 255.255.255.0
 encapsulation frame-relay
 ipv6 address 2001:FE:12:12::/64 eui-64
 ipv6 ospf neighbor FE80::C200:1BFF:FEC8:0
 ipv6 ospf 1 area 0
 clock rate 2000000
 frame-relay map ipv6 FE80::C200:1BFF:FEC8:0 201 broadcast
 frame-relay interface-dlci 201
!
ipv6 router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes

R3 Config:

ipv6 unicast-routing

!        
interface FastEthernet0/0
 no ip address
 speed 100
 full-duplex
 ipv6 address 2001:FE:13:13::/64 eui-64
 ipv6 address FC01:DB8:74:B::/64 eui-64
 ipv6 ospf 1 area 13
!
ipv6 router ospf 1
 router-id 3.3.3.3
 log-adjacency-changes

R4 Config:

ipv6 unicast-routing

!

interface FastEthernet0/0
 no ip address
 speed 100
 full-duplex
 ipv6 address 2001:FE:24:24::/64 eui-64
 ipv6 ospf 1 area 24
!
ipv6 router ospf 1
 router-id 4.4.4.4
 log-adjacency-changes

Points of interest in this lab:

The Frame-relay connection between R1 and R2 is done using NBMA which dictate LSA flooding using unicast hence a neighbor statement should be configured, but unlike IPv4, in IPv6 we need to configure this statement using the link-local IPv6 and not the interface IPv6 which in this case it's global-unicast address. Also frame-relay IPv6 static maps should be configured.

OSPFv3 is configured directly on the interface but in order to achieve adjacency we will need to configure router-id, which done under ipv6 router ospf process.