Cisco : Dynamic routing - OSPF (single area)

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Open Shortest Path First (OSPF) adalah protokol gateway interior (IGP) yang digunakan secara luas untuk melakukan routing paket-paket IP dalam satu sistem otonom (AS) dalam jaringan IP. OSPF dirancang untuk menghitung jalur terpendek secara efisien untuk paket data yang bergerak dari sumber ke tujuan.

Command	Description
`R1(config)#router ospf [PID]`	Process ID [PID] (1 - 65535)
`R1(config-router)#router-id [a.b.c.d]`	menual mengatur router ID, dengan IPv4 format.
`R1(config-router)#network [network-address] [wildcard-mask] area [area id]`	Untuk semua network yang terhubung langsung. Area ID 0 - 4294967295

area id dapat ditulis dengan format ip adress ProTip: Begaimana cara mengetahui network yang terhubung langsung dengan router?
apat diketahu dengan R1(config)#do show ip route con command.

Command	Description
`R1#show ip protocols`	PID, router ID, advertised networks, neighbors dan administrative distance.
`R1#show ip route`
`R1#show ip ospf neighbor`	lis OSPF neighbor
`R1#show ip ospf`	identify the PID, router ID, area information, dan waktu
`R1#show ip ospf interface brief`
`R1#show ip ospf interface`	list ospf interfaces
`R1#show ip ospf interface [int-id]`	Lebih detail

Contoh:

router ospf 1
 network X.X.X.0 0.0.0.255 area 0
 network Y.Y.Y.0 0.0.0.3 area 0

Konfigurasi IP

R1 : Konfigurasi IP

R1(config)#interface FastEthernet0/0
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#interface Serial0/0/0
R1(config-if)#ip address 10.0.1.1 255.255.255.252
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#interface Serial0/1/0
R1(config-if)#ip address 10.0.0.1 255.255.255.252
R1(config-if)#no shutdown
R1(config-if)#exit

R2 : Konfigurasi IP

R2(config)#interface FastEthernet0/0
R2(config-if)#ip address 192.168.2.1 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#interface Serial0/0/0
R2(config-if)#ip address 10.0.2.1 255.255.255.252
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#interface Serial0/1/0
R2(config-if)#ip address 10.0.0.2 255.255.255.252
R2(config-if)#no shutdown

R3 : Konfigurasi IP

R3(config)#interface FastEthernet0/0
R3(config-if)#ip address 192.168.3.1 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#exit
R3(config)#interface Serial0/0/0
R3(config-if)#ip address 10.0.2.2 255.255.255.252
R3(config-if)#no shutdown
R3(config-if)#exit
R3(config)#interface Serial0/1/0
R3(config-if)#ip address 10.0.1.2 255.255.255.252
R3(config-if)#no shutdown

PCs : Konfigurasi IP

PC	IP Address	Subnet Mask
PC1	192.168.1.2	255.255.255.0	192.168.1.1
PC2	192.168.2.2	255.255.255.0	192.168.2.1
PC3	192.168.3.2	255.255.255.0	192.168.3.1

Hubungkan semua segment jaringan hanya dengan ospf dan hanya menggunakan single area

Step 1 : Pembuatan VLANs

Switch(config)#vlan 10
Switch(config-vlan)#name BIRU
Switch(config-vlan)#exit

Switch(config)#vlan 20
Switch(config-vlan)#name MAGENTA
Switch(config-vlan)#exit

Step 2 : Assign VLANs ke Ports

Switch(config)#interface f0/1
Switch(config-if)#switchport mode access 
Switch(config-if)#switchport access vlan 10
Switch(config-if)#exit

Switch(config)#interface f0/2
Switch(config-if)#switchport mode access 
Switch(config-if)#switchport access vlan 10
Switch(config-if)#exit

Cisco : Dynamic routing - OSPF (single area)

Syntax

Konfigurasi OSPF

OSPF verification

Topologi

Konfigurasi

Testing