Assalamualaikum.wr.wb berikut adalah langkah-langkah untuk mengkonfigurasi ROUTING OSPF selamat mengikuti dan semoga bermanfaat :)
1. buka applikasi cisco paket traser dan betuk topologi ROUTER seperti ini atau bebas lalu atur kabel dengan kabel CROSS...

2. lalu pilih router ke-1 untuk mengkonfigurasi router!!!
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#int f0/0
R1(config-if)#ip add 12.12.12.1 255.255.255.0
R1(config-if)#ex
R1(config)#no sh
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#int f0/0
R1(config-if)#ip add 12.12.12.1 255.255.255.0
R1(config-if)#ex

3. lalu pilih router 2 untuk mengkonfigurasi,

Router>en
Router(config)#hostname R2
R2(config)#int f0/0
R2(config-if)#ip add 12.12.12.2 255.255.255.0
R2(config-if)#sh
R2(config-if)#no sh
R2(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
R2(config-if)#ex
R2(config)#int f1/0
R2(config-if)#ip add 23.23.23.1 255.255.255.255
Bad mask /32 for address 23.23.23.1
R2(config-if)#ip add 23.23.23.1 255.255.255.0
R2(config-if)#no sh
4. konfigurasi router 3!!!
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R3
R3(config)#int f1/0
R3(config-if)#ip add 23.23.23.2 255.255.255.0
R3(config-if)#no sh
R3(config-if)#
%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
R3(config-if)#ex
R3(config)#int f0/0
R3(config-if)#ip add 24.24.24.1 255.255.255.0
R3(config-if)#no sh
R3(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
R3(config-if)#ex
R3(config)#int f2/0
R3(config-if)#ip add 35.35.35.1 255.255.255.0

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R3
R3(config)#int f1/0
R3(config-if)#ip add 23.23.23.2 255.255.255.0
R3(config-if)#no sh
R3(config-if)#
%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
R3(config-if)#ex
R3(config)#int f0/0
R3(config-if)#ip add 24.24.24.1 255.255.255.0
R3(config-if)#no sh
R3(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
R3(config-if)#ex
R3(config)#int f2/0
R3(config-if)#ip add 35.35.35.1 255.255.255.0
5. tekan router 4 untuk mengkofigurasi!!!
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R4
R4(config)#int f0/0
R4(config-if)#ip add 24.24.24.2 255.255.255.0
R4(config-if)#no sh
R4(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
R4(config-if)#ex
R4(config)#int f1/0
R4(config-if)#ip add 45.45.45.1 255.255.255.0
R4(config-if)#no sh

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R4
R4(config)#int f0/0
R4(config-if)#ip add 24.24.24.2 255.255.255.0
R4(config-if)#no sh
R4(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
R4(config-if)#ex
R4(config)#int f1/0
R4(config-if)#ip add 45.45.45.1 255.255.255.0
R4(config-if)#no sh
6. lalu tekan router 5 untuk mengkonfigurasi!!

R5(config)#int f2/0
R5(config-if)#ip add 35.35.35.2 255.255.255.0
R5(config-if)#no sh
R5(config-if)#
%LINK-5-CHANGED: Interface FastEthernet2/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet2/0, changed state to up
R5(config-if)#ex
R5(config)#int f1/0
R5(config-if)#ip add 45.45.45.2 255.255.255.0
R5(config-if)#no sh
R5(config-if)#
%LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
R5(config-if)#ex
R5(config)#int f0/0
R5(config-if)#ip add 56.56.56.1 255.255.255.0
R5(config-if)#no sh
7. tekan router 6 untuk mengkonfigurasi router 6

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R6
R6(config)#int f0/0
R6(config-if)#ip add 56.56.56.2 255.255.255.0
R6(config-if)#no sh
R6(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
R6(config-if)#ex
R6(config)#int f1/0
R6(config-if)#ip add 67.67.67.1 255.255.255.0
R6(config-if)#no sh
8. Terakhir tekan router 7 untuk mengkonfigurasi router 7!!!

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R7
R7(config)#int f1/0
R7(config-if)#ip add 67.67.67.2 255.255.255.0
R7(config-if)#no sh
9. Kemudian kita melakukan LOOPBACK pada setiap router 1 sampai 7 dibawah ini namun di bedakan ip adress seperti router 1 menjadi (1.1.1.1) dan di setiap router seperti router 1.dan di bawah ini contohnya!!

10.Setelah kita melakukan LOOPBACK, kemudian kita melakukan router OSPF pada setiap router. contoh seperti di bawah ini!!!

Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#router ospf 5
R1(config-router)#net 12.12.12.0 0.0.0.255 area 1
R1(config-router)#net 1.1.1.1 0.0.0.0 area 1
R1(config-router)#

11. setelah kalian sudah selesai mengkonfigurasi,melakukan LOOPBACK dan melakukan OSPF dengan benar saat nya kita coba kirim pesan seperti contoh berikut!!!

SELAMAT MENCOBA;)
ASSALAMUALAIKUM.WR.WB
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