Konfigurasi OSPF (Open Shortest Path First)

Konfigurasi Router 0 …
interface Serial2/0
bandwidth 64
ip address 10.10.15.3 255.255.255.0

clock rate 56000
!
interface FastEthernet5/0
no ip address
shutdown
!
router ospf 20
log-adjacency-changes
network 10.10.15.0 0.0.0.255 area 0
Konfigurasi Router 2 …
interface Serial2/0
ip address 10.10.12.4 255.255.255.0
!
interface Serial3/0
ip address 10.10.14.4 255.255.255.0
clock rate 56000
!
router ospf 20
log-adjacency-changes
network 10.10.12.0 0.0.0.255 area 0
network 10.10.14.0 0.0.0.255 area 0
!
Konfigurasi Router 3 …
interface Serial2/0
ip address 10.10.13.3 255.255.255.0
!
interface Serial3/0
ip address 10.10.16.5 255.255.255.0
clock rate 56000
!
router ospf 20
log-adjacency-changes
network 10.10.13.0 0.0.0.255 area 0
network 10.10.16.0 0.0.0.255 area 0
!
Konfigurasi Router 4 …
interface Serial2/0
ip address 10.10.16.4 255.255.255.0
!
interface Serial3/0
ip address 10.10.14.3 255.255.255.0
!
router ospf 20
log-adjacency-changes
network 10.10.14.0 0.0.0.255 area 0
network 10.10.16.0 0.0.0.255 area 0
!
Konfigurasi Router 1 …
interface Serial2/0
bandwidth 64
ip address 10.10.15.5 255.255.255.0
!
interface Serial3/0
bandwidth 64
ip address 10.10.12.6 255.255.255.0
clock rate 56000
!
interface Serial6/0
bandwidth 64
ip address 10.10.13.5 255.255.255.0
clock rate 56000
!
router ospf 10
log-adjacency-changes
!
router ospf 20
log-adjacency-changes
network 10.10.12.0 0.0.0.255 area 0
network 10.10.13.0 0.0.0.255 area 0
network 10.10.15.0 0.0.0.255 area 0
!
setelah router terkonfigurasi, langkah berikutnya melihat isi tabel dari masing-masing router dengan show ip route, lakukan. Jika hasil dari tabel routing yang terdapat pada tiap router telah terditeksi maka coba ping salah satu router dengan router yang lainnya.
mis untuk router 3 …
Router3#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 static route
Gateway of last resort is not set

10.0.0.0/24 is subnetted, 5 subnets
O       10.10.12.0 [110/2343] via 10.10.13.5, 00:26:42, Serial2/0
[110/2343] via 10.10.16.4, 00:26:12, Serial3/0
C       10.10.13.0 is directly connected, Serial2/0
O       10.10.14.0 [110/1562] via 10.10.16.4, 00:26:12, Serial3/0
O       10.10.15.0 [110/2343] via 10.10.13.5, 00:26:42, Serial2/0
C       10.10.16.0 is directly connected, Serial3/0
dari tabel routing tersebut terlihat koneksi untuk OSPF dengan network 10.10.12.0, 10.10.14.0, dan 10.10.15.0 berarti hasil konfigurasi berhasil  ..
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