Lab 15. RIP Summary Address


RIP Route Summarization (Summary Address) berfungsi untuk meningkatkan skalabilitas dan efisiensi dalam jaringan yang besar dengan meringkas route di dalam tabel routing RIP. Di dalam IP Summarization tidak ada entri untuk child routes, dan ini berfungsi untuk mengurangi ukuran tabel routing sehingga menjadi lebih ramping, semakin sedikit barisnya maka kinerja cpu dan memori juga akan lebih ringan, dapat mengurangi waktu proses yang diperlukan dan memungkinkan router untuk menangani lebih routing.


Tujuan Lab :
  • Memperlajari cara mengkonfigurasi summarization untuk menggabungkan beberapa route menjadi satu sehingga routing tabelnya menjadi ringkas.
Topologi Lab :



Metode Lab :
  • Konfigurasikan pengalamatan IP untuk topologi di atas
  • Pada Router R1 dibuat beberapa IP Loopback /32
  • Advertise semuanya ke RIP
  • Pastikan semua route tersebut muncul di sisi Router R2 dan R3
  • Konfigurasikan summarization untuk menggabungkan beberapa route tersebut
Verifikasi Lab :
  • Kondisi awal sebelum summarization cek routenya di sisi Router R2 dan R3
  • Setelah summarization dikonfigurasikan di Router R1, pastikan route yang disummarize munculnya hanya satu route saja baik di Router R2 dan R3

Konfigurasi Router R1

hostname R1
!

interface Loopback0

 ip address 1.1.1.1 255.255.255.255

!
interface Loopback10
 ip address 10.0.0.1 255.255.255.255
!
interface Loopback11
 ip address 10.0.1.1 255.255.255.255
!
interface Loopback12
 ip address 10.0.2.1 255.255.255.255
!
interface Loopback13
 ip address 10.0.3.1 255.255.255.255
!
interface Loopback14
 ip address 10.4.0.1 255.255.255.255
!
interface Loopback15
 ip address 10.5.0.1 255.255.255.255
!
interface Loopback16
 ip address 10.6.0.1 255.255.255.255
!
interface Loopback17
 ip address 10.7.0.1 255.255.255.255
!
interface Loopback18
 ip address 10.8.0.1 255.255.255.255
!
interface Loopback20
 ip address 11.0.0.1 255.255.255.255
!
interface Loopback21
 ip address 11.0.1.1 255.255.255.255
!
interface Loopback22
 ip address 11.0.2.1 255.255.255.255
!
interface Loopback23
 ip address 11.0.3.1 255.255.255.255
!
interface Loopback24
 ip address 11.0.4.1 255.255.255.255
!
interface Loopback31
 ip address 12.0.0.1 255.255.255.255
!
interface Loopback32
 ip address 12.0.0.2 255.255.255.255
!
interface Loopback33
 ip address 12.0.0.3 255.255.255.255
!
interface Loopback34
 ip address 12.0.0.4 255.255.255.255
!
interface Serial0/0
 ip address 12.12.12.1 255.255.255.0
 clock rate 2000000
!
router rip
 version 2
 network 1.0.0.0
 network 10.0.0.0
 network 11.0.0.0
 network 12.0.0.0
 no auto-summary



Konfigurasi Router R2

hostname R2
!

interface Loopback0

 ip address 2.2.2.2 255.255.255.255

!
interface FastEthernet0/0
 ip address 23.23.23.2 255.255.255.0
 duplex auto
 speed auto
!
interface Serial0/0
 ip address 12.12.12.2 255.255.255.0
 clock rate 2000000
!
router rip
 version 2
 network 2.0.0.0
 network 12.0.0.0
 network 23.0.0.0
 no auto-summary
!


Konfigurasi Router R3

hostname R2
!
interface Loopback0
 ip address 3.3.3.3 255.255.255.255
!
interface FastEthernet0/0
 ip address 23.23.23.3 255.255.255.0
 duplex auto
 speed auto
!
router rip
 version 2
 network 3.0.0.0
 network 23.0.0.0
 no auto-summary
!


Cek tabel routing R2


R2#sh ip route rip

     1.0.0.0/32 is subnetted, 1 subnets

R       1.1.1.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
     3.0.0.0/32 is subnetted, 1 subnets
R       3.3.3.3 [120/1] via 23.23.23.3, 00:00:04, FastEthernet0/0
     10.0.0.0/32 is subnetted, 9 subnets
R       10.8.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.0.3.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.0.2.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.0.1.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.0.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.7.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.6.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.5.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       10.4.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
     11.0.0.0/32 is subnetted, 5 subnets
R       11.0.2.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       11.0.3.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       11.0.0.1 [120/1] via 12.12.12.1, 00:00:14, Serial0/0
R       11.0.1.1 [120/1] via 12.12.12.1, 00:00:15, Serial0/0
R       11.0.4.1 [120/1] via 12.12.12.1, 00:00:15, Serial0/0
     12.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
R       12.0.0.4/32 [120/1] via 12.12.12.1, 00:00:15, Serial0/0
R       12.0.0.1/32 [120/1] via 12.12.12.1, 00:00:15, Serial0/0
R       12.0.0.2/32 [120/1] via 12.12.12.1, 00:00:16, Serial0/0
R       12.0.0.3/32 [120/1] via 12.12.12.1, 00:00:16, Serial0/0


Cek tabel routing R3

R3#sh ip route rip
     1.0.0.0/32 is subnetted, 1 subnets
R       1.1.1.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
     2.0.0.0/32 is subnetted, 1 subnets
R       2.2.2.2 [120/1] via 23.23.23.2, 00:00:07, FastEthernet0/0
     10.0.0.0/32 is subnetted, 9 subnets
R       10.8.0.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.0.3.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.0.2.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.0.1.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.0.0.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.7.0.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.6.0.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.5.0.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       10.4.0.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
     11.0.0.0/32 is subnetted, 5 subnets
R       11.0.2.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       11.0.3.1 [120/2] via 23.23.23.2, 00:00:07, FastEthernet0/0
R       11.0.0.1 [120/2] via 23.23.23.2, 00:00:08, FastEthernet0/0
R       11.0.1.1 [120/2] via 23.23.23.2, 00:00:08, FastEthernet0/0
R       11.0.4.1 [120/2] via 23.23.23.2, 00:00:08, FastEthernet0/0
     12.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
R       12.0.0.4/32 [120/2] via 23.23.23.2, 00:00:08, FastEthernet0/0
R       12.12.12.0/24 [120/1] via 23.23.23.2, 00:00:08, FastEthernet0/0
R       12.0.0.1/32 [120/2] via 23.23.23.2, 00:00:10, FastEthernet0/0
R       12.0.0.2/32 [120/2] via 23.23.23.2, 00:00:10, FastEthernet0/0
R       12.0.0.3/32 [120/2] via 23.23.23.2, 00:00:10, FastEthernet0/0


Dapat anda lihat dari tabel routing di atas sangat banyak child route nya, untuk itu mari kita ringkas (summary). Di sini yang akan saya summary yaitu network 10.x.x.x dan 11.x.x.x saja.

R1(config)#int s0/0
R1(config-if)#ip summary-address rip 10.0.0.0 255.0.0.0
R1(config-if)#ip summary-address rip 11.0.0.0 255.0.0.0


Cek kembali tabel routing Router R2

R2#clear ip route *
R2#sh ip route rip
     1.0.0.0/32 is subnetted, 1 subnets
R       1.1.1.1 [120/1] via 12.12.12.1, 00:00:02, Serial0/0
     3.0.0.0/32 is subnetted, 1 subnets
R       3.3.3.3 [120/1] via 23.23.23.3, 00:00:02, FastEthernet0/0
R    10.0.0.0/8 [120/1] via 12.12.12.1, 00:00:02, Serial0/0
R    11.0.0.0/8 [120/1] via 12.12.12.1, 00:00:02, Serial0/0
     12.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
R       12.0.0.4/32 [120/1] via 12.12.12.1, 00:00:02, Serial0/0
R       12.0.0.1/32 [120/1] via 12.12.12.1, 00:00:02, Serial0/0
R       12.0.0.2/32 [120/1] via 12.12.12.1, 00:00:02, Serial0/0
R       12.0.0.3/32 [120/1] via 12.12.12.1, 00:00:02, Serial0/0


Cek kembali tabel routing Router R3

R3#clear ip route *
R3#sh ip route rip
     1.0.0.0/32 is subnetted, 1 subnets
R       1.1.1.1 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0
     2.0.0.0/32 is subnetted, 1 subnets
R       2.2.2.2 [120/1] via 23.23.23.2, 00:00:01, FastEthernet0/0
R    10.0.0.0/8 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0
R    11.0.0.0/8 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0
     12.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
R       12.0.0.4/32 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0
R       12.12.12.0/24 [120/1] via 23.23.23.2, 00:00:01, FastEthernet0/0
R       12.0.0.1/32 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0
R       12.0.0.2/32 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0
R       12.0.0.3/32 [120/2] via 23.23.23.2, 00:00:01, FastEthernet0/0


Bisa kita lihat ukuran tabel routing pada Router R2 dan R3 lebih ramping dari pada sebelumnya. Manfaatnya seperti yang sudah dijelaskan di awal. Analoginya jika anda mencari buku di perpustakaan A yang memiliki koleksi buku sejumlah 100 buah dan perpustakaan B dengan koleksi buku 10 buah, maka anda akan lebih mudah mencarinya di perpustakaan B.


Sumber: id-networkers


Previous Lab >> Lab 14. RIP Split Horizon

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