Cisco: OSPF Sederhana

Router1:

enable
configure terminal
  interface ethernet1/1
    ip address 10.10.1.1 255.255.255.252
    no shutdown
    exit
  interface ethernet1/2
    ip address 10.10.1.5 255.255.255.252
    no shutdown
    exit
  !
  ! NAT GNS3 gw 192.168.122.1
  interface ethernet1/3
    ip address 192.168.122.100 255.255.255.0
    ip address 192.168.122.101 255.255.255.0 secondary
    ip address 192.168.122.102 255.255.255.0 secondary
    no shutdown
    ip route 0.0.0.0 0.0.0.0 192.168.122.1
  ip route 192.168.2.0 255.255.255.0 172.16.1.2
  end

Router2:

enable
configure terminal
  interface ethernet1/1
    ip address 10.10.1.6 255.255.255.252
    no shutdown
    exit
  interface ethernet1/2
    ip address 10.10.1.9 255.255.255.252
    no shutdown
    exit
  interface ethernet1/3
    ip address 172.16.1.1 255.255.0.0
    no shutdown
    end

Router3:

enable
configure terminal
  interface ethernet1/1
    ip address 10.10.1.2 255.255.255.252
    no shutdown
    exit
  interface ethernet1/2
    ip address 10.10.1.10 255.255.255.252
    no shutdown
    exit
  interface ethernet1/3
    ip address 192.168.1.1 255.255.255.0
    no shutdown
    end

Ada tiga (3) elemen dasar konfigurasi OSPF:

• Enable OSPF instance
• OSPF area configuration
• OSPF network configuration

instance name=default sudah ada, tidak perlu di tambahkan, tapi kalau perlu menambahkan caranya adalah sebagai berikut

R1:

enable
configure terminal
  router ospf 1
  end

R2:

enable
configure terminal
  router ospf 2
  end

R3:

enable
configure terminal
  router ospf 3
  end

Cek

/routing ospf instance print 

Flags: X - disabled 
 0   name="default" router-id=0.0.0.0 distribute-default=never 
     redistribute-connected=as-type-1 redistribute-static=as-type-1 
     redistribute-rip=no redistribute-bgp=no redistribute-other-ospf=no 
     metric-default=1 metric-connected=20 metric-static=20 metric-rip=20 
     metric-bgp=auto metric-other-ospf=auto in-filter=ospf-in 
out-filter=ospf-out

Catatan: Ingat bahwa backbone area-id adalah 0.0.0.0.

R1

enable
configure terminal
  !
  ! area 0 = backbone
  network 10.10.1.0 0.0.0.3 area 0
  network 10.10.1.4 0.0.0.3 area 0
  end

R2

enable
configure terminal
  !
  ! area 0 = backbone
  network 10.10.1.4 0.0.0.3 area 0
  network 10.10.1.8 0.0.0.3 area 0
  network 172.16.0.0 0.0.255.255 area 0
  end

R3

enable
configure terminal
  !
  ! area 0 = backbone
  network 10.10.1.0 0.0.0.3 area 0
  network 10.10.1.8 0.0.0.3 area 0
  network 192.168.1.0 0.0.0.255 area 0
  end

Verify

Cek di R1, R2, R3

/routing ospf interface print
/routing ospf neighbor print
/ip route print

Lakukan yang sama untuk R2, R3

Referensi

• https://wiki.mikrotik.com/wiki/Manual:OSPF-examples

Pranala Menarik

• Cisco
• Mikrotik