Lab – OSPF Multiárea (3 áreas)
Topologia com 5 roteadores e OSPF multiárea.
1. Tabela de Redes (/30)
| Área | Enlace | Rede / Máscara | Roteador – Interface – IP | Roteador – Interface – IP |
|---|---|---|---|---|
| Área 0 | R1 – R3 | 10.0.0.4 / 30 | R1 — e0/1 — 10.0.0.5 | R3 — e0/0 — 10.0.0.6 |
| Área 0 | R3 – R2 | 10.0.0.8 / 30 | R3 — e0/1 — 10.0.0.10 | R2 — e0/1 — 10.0.0.9 |
| Área 0 | R1 – R2 | 10.0.0.0 / 30 | R1 — e0/0 — 10.0.0.1 | R2 — e0/0 — 10.0.0.2 |
| Área 1 | R1 – R4 | 10.1.1.0 / 30 | R1 — e0/2 — 10.1.1.1 | R4 — e0/0 — 10.1.1.2 |
| Área 2 | R2 – R5 | 10.2.2.0 / 30 | R2 — e0/2 — 10.2.2.1 | R5 — e0/0 — 10.2.2.2 |
| Loopbacks | R1 | 10.99.99.1 / 32 | R1 — lo0 — 10.99.99.1 | — |
| Loopbacks | R2 | 10.99.99.2 / 32 | R2 — lo0 — 10.99.99.2 | — |
| Loopbacks | R3 | 10.99.99.3 / 32 | R3 — lo0 — 10.99.99.3 | — |
2. Configurações OSPF dos Roteadores
interface e0/0 ip address 10.0.0.1 255.255.255.252 no shut interface e0/1 ip address 10.0.0.5 255.255.255.252 no shut interface e0/2 ip address 10.1.1.1 255.255.255.252 no shut interface Loopback0 ip address 10.99.99.1 255.255.255.255 router ospf 1 router-id 1.1.1.1 network 10.0.0.0 0.0.0.3 area 0 network 10.0.0.4 0.0.0.3 area 0 network 10.1.1.0 0.0.0.3 area 1 network 10.99.99.1 0.0.0.0 area 0
interface e0/0 ip address 10.0.0.2 255.255.255.252 no shut interface e0/1 ip address 10.0.0.9 255.255.255.252 no shut interface e0/2 ip address 10.2.2.1 255.255.255.252 no shut interface Loopback0 ip address 10.99.99.2 255.255.255.255 router ospf 1 router-id 2.2.2.2 network 10.0.0.0 0.0.0.3 area 0 network 10.0.0.8 0.0.0.3 area 0 network 10.2.2.0 0.0.0.3 area 2 network 10.99.99.2 0.0.0.0 area 0
interface e0/0 ip address 10.0.0.6 255.255.255.252 no shut interface e0/1 ip address 10.0.0.10 255.255.255.252 no shut interface Loopback0 ip address 10.99.99.3 255.255.255.255 router ospf 1 router-id 3.3.3.3 network 10.0.0.4 0.0.0.3 area 0 network 10.0.0.8 0.0.0.3 area 0 network 10.99.99.3 0.0.0.0 area 0
interface e0/0 ip address 10.1.1.2 255.255.255.252 no shut router ospf 1 router-id 4.4.4.4 network 10.1.1.0 0.0.0.3 area 1
interface e0/0 ip address 10.2.2.2 255.255.255.252 no shut router ospf 1 router-id 5.5.5.5 network 10.2.2.0 0.0.0.3 area 2
3. Sequência de Testes
1. Vizinhanças OSPF
Executar em TODOS os roteadores:
show ip ospf neighbor
2. Interfaces OSPF
Executar em TODOS os roteadores:
show ip ospf interface brief
3. LSDB
Executar no backbone (R1, R2 ou R3):
show ip ospf database
4. Rotas OSPF
Executar em TODOS os roteadores:
show ip route ospf
5. Ping entre roteadores
Executar a partir do R4:
ping 10.99.99.1 ping 10.99.99.2 ping 10.99.99.3 ping 10.2.2.2 ping 10.1.1.2
6. Ver loopbacks anunciadas
Executar no backbone (R1, R2 ou R3):
show ip ospf database router
7. Ver LSAs inter-área
Executar nos ABRs (R1 e R2):
show ip ospf database summary
8. Ver rotas O IA
Executar em R4 e R5:
show ip route | include O IA
9. Checar DR/BDR
Executar em qualquer roteador com link serial/ponto-a-ponto:
show ip ospf interface e0/0
10. Traceroute ponta a ponta
Executar a partir do R4:
traceroute 10.2.2.2