Lab ospf

Práctica OSPF Multitárea

L100: 180.0.0.1/16

Área 2
S0 .22.2 S0 .22.1

Área 0

Área 3

e0 170.100 fe0 .170.1

S1 .21.2 S1 .21.1

S0 .100.1 S0 .100.2

fe0 .30.1 fe0 .30.2

Rext

A22

A21

ABR02

ABR03

A31

L0: 10.0.0.22/32 L20: 172.22.0.1/16

L0: 10.0.0.21/32 L20: 172.21.0.1/16

L0: 10.0.0.2/32 L100: 150.0.1.1/24 L101: 150.0.10.1/24 L200: 155.0.1.1/24 L201:155.0.10.1/24

L0: 10.0.0.3/32

L0: 10.0.0.31/32 L20: 160.0.0.1/26

Descripción: Se tiene un dominio de OSPF con tres áreas, así como un enrutador externo a OSPF (Rext). Rext tiene una red 180.0.0.016, la cual es alcanzable mediante una ruta estática en A22 (ASBR). Se inicia la configuración, por ahora, sólo se configuró OSPF en el enrutador ABR02
ABR02#sh run | beg router osp router ospf 1router-id 10.0.0.2 log-adjacency-changes network 192.168.100.0 0.0.0.255 area 0 ABR02#sh ip protocols Routing Protocol is "ospf 1" Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Router ID 10.0.0.2 Number of areas in this router is 1. 1 normal 0 stub 0 nssa Maximum path: 4 Routing for Networks: 192.168.100.0 0.0.0.255 area 0 RoutingInformation Sources: Gateway Distance Last Update 10.0.0.2 110 00:01:45 Distance: (default is 110)

Se configura A21. Por ahora, sólo se pone la red de enlace con ABR02, y aprende ya las redes anunciadas en el área 0.
A21#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1,N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set C C 172.21.0.0/16 is directly connected, Loopback10 192.168.21.0/24 is directly connected, Serial0/0 10.0.0.0/32is subnetted, 1 subnets C 10.0.0.21 is directly connected, Loopback0 C 192.168.22.0/24 is directly connected, Serial0/1 O IA 192.168.100.0/24 [110/1562] via 192.168.21.1, 00:01:02, Serial0/0 150.0.0.0/32 is subnetted, 2 subnets O IA 150.0.1.1 [110/782] via 192.168.21.1, 00:01:02, Serial0/0 O IA 150.0.10.1 [110/782] via 192.168.21.1, 00:01:02, Serial0/0 A21#sh ip route 150.0.10.1 Routing entry for150.0.10.1/32 Known via "ospf 1", distance 110, metric 782, type inter area Last update from 192.168.21.1 on Serial0/0, 00:01:27 ago Routing Descriptor Blocks: * 192.168.21.1, from 10.0.0.2, 00:01:27 ago, via Serial0/0 Route metric is 782, traffic share count is 1

Se configuran A21 y A22 (pendiente lo exterior), y ya ABR30 aprende las rutas de área 2
ABR03#sh ip route Codes: C - connected, S -static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded staticroute Gateway of last resort is not set C 192.168.30.0/24 is directly connected, FastEthernet0 172.21.0.0/32 is subnetted, 1 subnets O IA 172.21.0.1 [110/1563] via 192.168.100.1, 00:02:13, Serial0 O IA 192.168.21.0/24 [110/1562] via 192.168.100.1, 00:10:27, Serial0 O IA 192.168.22.0/24 [110/2343] via 192.168.100.1, 00:01:40, Serial0 C 192.168.100.0/24 is directly connected, Serial0 150.0.0.0/32 issubnetted, 2 subnets O 150.0.1.1 [110/782] via 192.168.100.1, 00:10:32, Serial0 O 150.0.10.1 [110/782] via 192.168.100.1, 00:10:33, Serial0

Se termina toda la configuración de OSPF en todos los enrutadores. Se muestra la tabla de rutas en A31.
A31#sh ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area...