Primero configuramos las interfaces de cada router sin olvidar ipv6 unicast-routing en el modo de configuración global
R1
interface Loopback0 no ip address ipv6 address 2001:AAAA:CCCC::1/64 end interface Serial0/0 no ip address ipv6 address 2001:AAAA:AAAA::1/64 ipv6 address FE80::1 link-local serial restart-delay 0 endR2
interface Serial0/0 no ip address ipv6 address 2001:AAAA:AAAA::2/64 ipv6 address FE80::2 link-local serial restart-delay 0 end interface Serial0/1 no ip address ipv6 address 2001:AAAA:BBBB::2/64 ipv6 address FE80::3 link-local serial restart-delay 0 endR3
interface Loopback0 no ip address ipv6 address 2001:AAAA:DDDD::1/64 end interface Serial0/1 no ip address ipv6 address 2001:AAAA:BBBB::1/64 ipv6 address FE80::4 link-local serial restart-delay 0 endVemos como quedan las interfaces después de la configuración:
R1
R1#sh ipv6 int brie | excl admin Serial0/0 [up/up] FE80::1 2001:AAAA:AAAA::1 Loopback0 [up/up] FE80::FFFF:FE10:45C5 2001:AAAA:CCCC::1R2
Serial0/0 [up/up] FE80::2 2001:AAAA:AAAA::2 Serial0/1 [up/up] FE80::3 2001:AAAA:BBBB::2R3
Serial0/1 [up/up] FE80::4 2001:AAAA:BBBB::1 Loopback0 [up/up] FE80::FFFF:FE10:45C5 2001:AAAA:DDDD::1Puesto que los routers no tienen ninguna ip en formato ipv4 hay que crear obligatoriamente un ID de 32 bits para cada uno.
R1
*Mar 1 00:41:08.575: %OSPFv3-4-NORTRID: OSPFv3 process 1 could not pick a router-id, ipv6 router ospf 1 router-id 0.0.0.1R2
ipv6 router ospf 1 router-id 0.0.0.2R3
ipv6 router ospf 1 router-id 0.0.0.3
Y por último habilitamos el enrutamiento, diciendo en cada interfaz que habla ipv6 que área va a enrutar, el comando network queda desfasado en RIP OSPF y EIGRP
R1
interface loopback 0 ipv6 ospf 1 area 0 interface serial0/0 ipv6 ospf 1 area 0R2
interface serial0/0 ipv6 ospf 1 area 0 interface serial0/1 ipv6 ospf 1 area 0R3
interface serial0/1 ipv6 ospf 1 area 0Vemos que al hacer show ip protocols dice porque interfaces habla OSPF pongo de ejemplo R1:
R1#sh ipv6 pro IPv6 Routing Protocol is "connected" IPv6 Routing Protocol is "static" IPv6 Routing Protocol is "ospf 1" Interfaces (Area 0): Loopback0 Serial0/0 Redistribution: NoneAhora todo queda perfectamente enrutado
R1
R1#sh ipv6 route ospf IPv6 Routing Table - 8 entries Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 O 2001:AAAA:BBBB::/64 [110/128] via FE80::2, Serial0/0 O 2001:AAAA:DDDD::1/128 [110/128] via FE80::2, Serial0/0Como ocurre en ospf normal las loopback se anuncian como /32 en ipv4 en ipv6 son /128. Probamos la conectividad
R1#ping 2001:aaaa:dddd::1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2001:AAAA:DDDD::1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 32/46/60 msTambien se puede observar la inclusión de un nuevo tipo de LSA, TIPO 8 que anuncia las Link-Local Address
Ejemplo en R3
R3#sh ipv6 ospf database OSPFv3 Router with ID (0.0.0.3) (Process ID 1) Router Link States (Area 0) ADV Router Age Seq# Fragment ID Link count Bits 0.0.0.1 278 0x80000004 0 1 None 0.0.0.2 267 0x80000003 0 2 None 0.0.0.3 87 0x80000002 0 1 None Link (Type-8) Link States (Area 0) ADV Router Age Seq# Link ID Interface 0.0.0.2 276 0x80000001 5 Se0/1 0.0.0.3 268 0x80000001 5 Se0/1 Intra Area Prefix Link States (Area 0) ADV Router Age Seq# Link ID Ref-lstype Ref-LSID 0.0.0.1 1437 0x80000003 0 0x2001 0 0.0.0.2 272 0x80000002 0 0x2001 0 0.0.0.3 87 0x80000002 0 0x2001 0
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