π― Obiettivi
πΊοΈ Topologia
π Guida
Lab β OSPF Single-Area
3 router (R1, R2, R3) in Area 0 con 3 LAN. Configura OSPF, router-id, network wildcard, passive-interface, reference bandwidth. Verifica neighbor adjacency e routing.
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3 Router β OSPF Area 0
π₯οΈ LAN A
192.168.1.0/24
192.168.1.0/24
βGi0/0β
R1
RID: 1.1.1.1
RID: 1.1.1.1
βGi0/1(.1|.2)β
R2
RID: 2.2.2.2
RID: 2.2.2.2
βGi0/2(.5|.6)β
R3
RID: 3.3.3.3
RID: 3.3.3.3
βGi0/0β
π§ LAN C
192.168.3.0/24
192.168.3.0/24
R2 Gi0/0 β LAN B: 192.168.2.0/24
IP pre-configurati:
R1: Gi0/0=192.168.1.1/24, Gi0/1=10.0.0.1/30
R2: Gi0/0=192.168.2.1/24, Gi0/1=10.0.0.2/30, Gi0/2=10.0.0.5/30
R3: Gi0/0=192.168.3.1/24, Gi0/1=10.0.0.6/30
R1: Gi0/0=192.168.1.1/24, Gi0/1=10.0.0.1/30
R2: Gi0/0=192.168.2.1/24, Gi0/1=10.0.0.2/30, Gi0/2=10.0.0.5/30
R3: Gi0/0=192.168.3.1/24, Gi0/1=10.0.0.6/30
1Abilita OSPF su R1
router ospf 1
router-id 1.1.1.1
network 192.168.1.0 0.0.0.255 area 0
network 10.0.0.0 0.0.0.3 area 0
router-id 1.1.1.1
network 192.168.1.0 0.0.0.255 area 0
network 10.0.0.0 0.0.0.3 area 0
2Passive-interface su R1
passive-interface GigabitEthernet0/0
La LAN non ha router OSPF dall'altra parte.
La LAN non ha router OSPF dall'altra parte.
3Stessa cosa su R2 e R3
R2: router-id 2.2.2.2, 3 network statements, passive Gi0/0
R3: router-id 3.3.3.3, 2 network statements, passive Gi0/0
R3: router-id 3.3.3.3, 2 network statements, passive Gi0/0
4Reference bandwidth
auto-cost reference-bandwidth 10000
Su TUTTI i router! Dentro router ospf 1.
Su TUTTI i router! Dentro router ospf 1.
5Verifica
show ip ospf neighbor β Full
show ip route ospf β route O
ping 192.168.3.1 da R1
show ip route ospf β route O
ping 192.168.3.1 da R1
π‘ Wildcard mask: /24 = 0.0.0.255, /30 = 0.0.0.3. Formula: 255.255.255.255 - subnet mask.
R1 β Console
R1
R2
R3
R1>