Lab 4 BGP Loopback Multihop

Topologi

Objective. Mempelajari bagaimana mengkonfigurasikan Peers BGP External antar Router R2 (AS12) dan Router R3 (AS3) menggunakan interface loopbacknya

Router 1

  interface Loopback0
  ip address 1.1.1.1 255.255.255.255

  interface Loopback1
  ip address 11.11.11.1 255.255.255.255

  interface Ethernet0/0
  ip address 12.12.12.1 255.255.255.0

  interface Ethernet0/1
  ip address 21.21.21.1 255.255.255.0

  router rip
  version 2
  network 1.0.0.0
  network 12.0.0.0
  network 21.0.0.0
  no auto-summary

  router bgp 12
  bgp log-neighbor-changes
  network 11.11.11.1 mask 255.255.255.255
  neighbor 2.2.2.2 remote-as 12
  neighbor 2.2.2.2 update-source Loopback0

Router 2 

  interface Loopback0

  ip address 2.2.2.2 255.255.255.255

  interface Ethernet0/0

  ip address 12.12.12.2 255.255.255.0

  interface Ethernet0/1

  ip address 21.21.21.2 255.255.255.0

  interface Ethernet0/3

  no ip address

  shutdown

  interface Serial1/0

  ip address 32.32.32.2 255.255.255.0

  serial restart-delay 0

   

  interface Serial1/1

  ip address 23.23.23.2 255.255.255.0

  serial restart-delay 0

  router rip

  version 2

  network 2.0.0.0

  network 12.0.0.0

  network 21.0.0.0

  network 23.0.0.0

  network 32.0.0.0

  no auto-summary

  router bgp 12

  bgp log-neighbor-changes

  neighbor 1.1.1.1 remote-as 12

  neighbor 1.1.1.1 update-source Loopback0

  

Router 3 

interface Loopback0

 ip address 3.3.3.3 255.255.255.255

!

interface Loopback3

  ip address 33.33.33.3 255.255.255.255

  interface Serial1/0

  ip address 32.32.32.3 255.255.255.0

  serial restart-delay 0

  interface Serial1/1

  ip address 23.23.23.3 255.255.255.0

  serial restart-delay 0

  router rip

  version 2

  network 3.0.0.0

  network 23.0.0.0

  network 32.0.0.0

  no auto-summary

  router bgp 3

  bgp log-neighbor-changes

  network 33.33.33.3 mask 255.255.255.255

  

oke sekarang mari kita mulai konfigurasinya, pertama kita setting terlebih dahulu routing neighbor bgp nya pada router 2 dan router 3

bisa kita lihat jika diatas juga kita menyetting multihop diatas terlihat angka 255, itu berarti maximal hop yang dimiliki adalah 255 dan 255 ini merupakan maximum hop yang ada di bgp multihop, sekarang mari kita coba lihat routing tabel nya 

oke disana bisa kita lihat jika ip interface loopback yang di advertise ke bgp di router 1 dan router 3 sudah terbaca sebagai routing bgp, untuk tahap akhir mari kita test ping ke ip ip tersebut 

oke konfigurasi berhasil, selamat mencoba semoga bermanfaat sekian wasalamualaikum wr wb