router-router yang berada dibawah kendali administator dan strategi routing yang sama.
pertama kali deikembangkan pada tahun 1987 oleh Internet Engineering Task Force (IETF) dan yang pertama kali dipublikasikan adalah OSPFv1. OSPFv1 ini tidak pernah diimplementasikan dan selalu disempurnakan. Pada tahun 1991, OSPFv2 dipublikasikan oleh John Moy melalui RFC1247 dan juga selalu mengalami penyempurnaan.Berikut ini merupakan contoh konfigurasi OSPF SINGLE AREA
Topologi
Langkah langkah konfigurasi
ROUTER 1
Router>en
Router#conf
Router#configure t
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int
Router(config)#interface fa
Router(config)#host
Router(config)#hostname ABHE-R1
ABHE-R1(config)#INT
ABHE-R1(config)#
ABHE-R1(config)#int
ABHE-R1(config)#interface fa
ABHE-R1(config)#interface fastEthernet0/0
ABHE-R1(config-if)#ip add
ABHE-R1(config-if)#ip address 10.10.10.1 255.255.255.0
ABHE-R1(config-if)#no sh
ABHE-R1(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to
up
ABHE-R1(config-if)#ex
ABHE-R1(config)#int
ABHE-R1(config)#interface fa
ABHE-R1(config)#interface fastEthernet0/1
ABHE-R1(config-if)#ip add
ABHE-R1(config-if)#ip address 30.30.30.1 255.255.255.0
ABHE-R1(config-if)#no sh
ABHE-R1(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to
up
%LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/1, changed state to up
ABHE-R1(config-if)#do wr
Building configuration...
[OK]
ABHE-R1(config-if)#ex
ABHE-R1(config)#router ospf 1
ABHE-R1(config-router)#network 10.10.10.0 0.0.0.255 are
ABHE-R1(config-router)#network 10.10.10.0 0.0.0.255 area 0
ABHE-R1(config-router)#network 30.30.30.0 0.0.0.255 ar
ABHE-R1(config-router)#network 30.30.30.0 0.0.0.255 area 0
ABHE-R1(config-router)#do wr
ROUTER2
Router#conf
Router#configure t
Router#configure
terminal
Enter configuration
commands, one per line. End with CNTL/Z.
Router(config)#int
Router(config)#interface
fa
Router(config)#interface
fastEthernet0/0
Router(config-if)#ip
add
Router(config-if)#ip
address 10.10.10.2 255.255.255.0
Router(config-if)#no
sh
Router(config-if)#ex
Router(config)#int
Router(config)#interface
fa
Router(config)#interface
fastEthernet0/1
Router(config-if)#ip
add
Router(config-if)#ip
address 20.20.20.1 255.255.255.0
Router(config-if)#no
sh
Router(config-if)#ex
Router(config)#int
Router(config)#interface
fa
Router(config)#interface
fastEthernet1/0
Router(config-if)#ip
add
Router(config-if)#ip
address 40.40.40.1 255.255.255.0
Router(config-if)#no
sh
Router(config-if)#do
wr
Router(config-if)#ex
Router(config)#rout
Router(config)#router
ospf
Router(config)#router
ospf 1
Router(config-router)#net
Router(config-router)#network
40.40.40.0 0.0.0.255
Router(config-router)#network
40.40.40.0 0.0.0.255 area 0
Router(config-router)#net
Router(config-router)#network
10.10.10.0 0.0.0.255 area 0
Router(config-router)#net
Router(config-router)#network
20.20.20.0 0.0.0.255 area 0
Router(config-router)#network
20.20.20.0 0.0.0.255 area 0
Router(config-router)#do
wr
ROUTER 3
Router>en
Router#conf
Router#configure t
Router#configure
terminal
Enter configuration
commands, one per line. End with CNTL/Z.
Router(config)#int
Router(config)#interface
fa
Router(config)#interface
fastEthernet0/0
Router(config-if)#ip
add
Router(config-if)#ip
address 20.20.20.2 255.255.255.0
Router(config-if)#no
sh
Router(config-if)#
%LINK-5-CHANGED:
Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN:
Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#ex
Router(config)#int
Router(config)#interface
fa
Router(config)#interface
fastEthernet0/1
Router(config-if)#ip
add
Router(config-if)#ip
address 50.50.50.1 255.255.255.0
Router(config-if)#no
sh
Router(config-if)#
%LINK-5-CHANGED:
Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN:
Line protocol on Interface FastEthernet0/1, changed state to up
Router(config-if)#rout
Router(config-if)#router
Router(config-if)#router
os
Router(config-if)#ex
Router(config)#rout
Router(config)#router
os
Router(config)#router
ospf 1
Router(config-router)#net
Router(config-router)#network
50.50.50.0 0.0.0.255 area
Router(config-router)#network
50.50.50.0 0.0.0.255 area 0
Router(config-router)#net
Router(config-router)#network
20.20.20.0 0.0.0.255 area 0
Router(config-router)#do
wr
Untuk semua switch tinggal di mode trunk saja
Switch(config)#interface fastEthernet0/1
Switch(config-if)#sw
Switch(config-if)#switchport acc
Switch(config-if)#switchport access m
Switch(config-if)#switchport access mo
Switch(config-if)#switchport mo
Switch(config-if)#switchport mode t
Switch(config-if)#switchport mode trunk
Hasil nya ping dari pc 0 ke pc 1 seperti di bawah
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