A continuación un ejemplo básico de configuración de OSPFv3, con la particularidad que un vecino estará corriendo IOS XR. La topología es sencilla y se muestra en la siguiente figura:


Primero se configura el direccionamiento IPv6 en las interfaces que interconectan a R1 y R2.

RP/0/1/CPU0:R1#conf t
RP/0/1/CPU0:R1(config)#int Gi0/0/0/1
RP/0/1/CPU0:R1(config-if)#ipv6 add 2001:db8:1212::1/48
RP/0/1/CPU0:R1(config-if)#commit

R2#conf t
R2(config)#interface GigabitEthernet1/0/0
R2(config-if)#ipv6 add 2001:db8:1212::2/48

Se verifica conectividad básica.

RP/0/1/CPU0:R1(config-if)#do ping 2001:db8:1212::2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:db8:1212::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/23/87 ms

Luego se configura direccionamiento IPv6 en las Loopbacks.

RP/0/1/CPU0:R1(config)#int lo0
RP/0/1/CPU0:R1(config-if)#ipv6 add 2001:db8:1111:1111::1/128
RP/0/1/CPU0:R1(config-if)#commit

R2(config)#int lo0
R2(config-if)#ipv6 add 2001:db8:2222:2222::2/128

Posteriormente se configura el proceso 1 de OSPFv3 y ambos routers en el área 0.

RP/0/1/CPU0:R1(config)#router ospfv3 1
RP/0/1/CPU0:R1(config-ospfv3)#area 0
RP/0/1/CPU0:R1(config-ospfv3-ar)#int Gi0/0/0/1
RP/0/1/CPU0:R1(config-ospfv3-ar-if)#commit

R2(config)#ipv6 uni
R2(config)#interface GigabitEthernet1/0/0
R2(config-if)#ipv6 ospf 1 a 0

Se verifica la vecindad se haya establecido.

RP/0/1/CPU0:R1#sh ospfv3 neighbor

Neighbors for OSPFv3 1

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
2.2.2.2         1     FULL/DR         00:00:39    17              GigabitEthernet0/0/0/1
Neighbor is up for 00:00:38

Total neighbor count: 1
RP/0/1/CPU0:R1#

Se agregan las Loopbacks al proceso de OSPFv3.

RP/0/1/CPU0:R1#sh run int lo0

interface Loopback0
ipv4 address 1.1.1.1 255.255.255.255
ipv6 address 2001:db8:1111:1111::1/128

R2#sh run int lo0

interface Loopback0
ip address 2.2.2.2 255.255.255.255
ipv6 address 2001:DB8:2222:2222::2/128

RP/0/1/CPU0:R1#conf t
RP/0/1/CPU0:R1(config)#router ospfv3 1
RP/0/1/CPU0:R1(config-ospfv3)#area 0
RP/0/1/CPU0:R1(config-ospfv3-ar)#int lo0
RP/0/1/CPU0:R1(config-ospfv3-ar-if)#commit

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#int lo0
R2(config-if)#ipv6 ospf 1 area 0

Se verifica la tabla de ruteo.

RP/0/1/CPU0:R1#sh route ipv6

Gateway of last resort is not set

L    2001:db8:1111:1111::1/128 is directly connected,
      00:12:10, Loopback0
C    2001:db8:1212::/48 is directly connected,
      00:05:22, GigabitEthernet0/0/0/1
L    2001:db8:1212::1/128 is directly connected,
      00:05:22, GigabitEthernet0/0/0/1
O    2001:db8:2222:2222::2/128
      [110/1] via fe80::21e:f7ff:fef7:5340, 00:00:14, GigabitEthernet0/0/0/1

...y por último conectividad entre las Loopbacks.

R2#ping 2001:db8:1111:1111::1 sou lo0

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:1111:1111::1, timeout is 2 seconds:

Packet sent with a source address of 2001:DB8:2222:2222::2
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/14/64 ms