CISCO LAB - OSPF [ OPEN SHORTEST PATH FIRST ]

Mengenal apa itu OSPF

OSPF merupakan salah satu protokol routing yang menggunakan alogoritma Shortest Path First (SPF). OSPF Terbagi menjadi area - area dan autonomous systems (AS). Meminimalkan routing update traffic, sehingga menurunkan routing overhead. Allows scalability, Supports VLSM/CIDR, Unlimited hop count, Open Standard / multi-vendor deploymen.

Topologi

Buat topologi seperti berikut:

Konfigurasi Ip address

Router0

Router(config)#interface fa0/0

Router(config-if)#ip address 10.10.10.1 255.255.255.0

Router(config-if)#no shutdown

Router(config-if)#interface se0/0/0

Router(config-if)#ip address 10.20.30.1 255.255.255.252

Router(config-if)#no shutdown

Router1

Router(config)#interface se0/0/0

Router(config-if)#ip address 10.20.30.2 255.255.255.252

Router(config-if)#no shutdown

Router(config-if)#interface fa0/0

Router(config-if)#ip address 10.20.20.1 255.255.255.0

Router(config-if)#no shutdown

Router(config-if)#interface se0/0/0

Router(config-if)#ip address 10.20.30.13 255.255.255.252

Router(config-if)#no shutdown

Router2

Router(config)#interface se0/0/0

Router(config-if)#ip address 10.20.30.14 255.255.255.252

Router(config-if)#no shutdown

Router(config-if)#interface fa0/0

Router(config-if)#ip address 10.30.30.1 255.255.255.0

Router(config-if)#no shutdown

Konfigurasi PC

PC0

ip : 10.10.10.2

netmask : 255.255.255.0

gateway : 10.10.10.1

PC1

ip : 10.20.20.2

netmask : 255.255.255.0

gateway : 10.20.20.1

PC0

ip : 10.30.30.2

netmask : 255.255.255.0

gateway : 10.30.30.1

Konfigurasi Routing

Router0

Router(config)#router ospf 10

Router(config-router)#network 10.10.10.0 0.0.0.255 area 0

Router(config-router)#network 10.20.30.0 0.0.0.3 area 0

Router1

Router(config)#router ospf 10

Router(config-router)#network 10.20.30.0 0.0.0.3 area 0

Router(config-router)#network 10.20.20.0 0.0.0.255 area 0

Router(config-router)#network 10.20.30.12 0.0.0.3 area 0

Router2

Router(config)#router ospf 10

Router(config-router)#network 10.20.30.12 0.0.0.3 area 0

Router(config-router)#network 10.30.30.0 0.0.0.255 area 0

Verifikasi

Ping antara PC0 ke PC1

Ping antara PC1 ke PC2

Ping antara PC0 ke PC2

Status Route

Router#show 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 static route

Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks

O 10.10.10.0/24 [110/65] via 10.20.30.1, 00:05:53, Serial0/0/0

C 10.20.20.0/24 is directly connected, FastEthernet0/0

C 10.20.30.0/30 is directly connected, Serial0/0/0

C 10.20.30.12/30 is directly connected, Serial0/0/1

O 10.30.30.0/24 [110/65] via 10.20.30.14, 00:03:19, Serial0/0/1

Router#

C - Connected = routing yang otomatis ada ketika jaringan dihubungkan ke router.

O - OSPF = routing yang menggunakan protokol ospf

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