Routing Switching

Lab OSPF Standard Area

3 min read

Topologi Lab

Berikut topologi untuk lab ini

OSPF Topo
Konfigurasi Router

Konfigurasi R1
hostname R1
!
interface Lo0
ip add 1.1.1.1 255.255.255.255
!
interface Lo1
ip add 100.100.100.1 255.255.255.255
!
interface Lo2
ip add 100.100.100.2 255.255.255.255
!
interface Lo3
ip add 100.100.100.3 255.255.255.255
!
interface Lo4
ip add 100.100.100.4 255.255.255.255
!
interface Lo5
ip add 100.100.100.5 255.255.255.255
!
interface Lo6
ip add 100.100.100.6 255.255.255.255
!
interface Lo7
ip add 100.100.100.7 255.255.255.255
interface S0/0
no sh
ip add 12.12.12.1 255.255.255.0
!
router ospf 1
router-id 1.1.1.1
net 1.1.1.1 0.0.0.0 area 0
net 100.100.100.1 0.0.0.0 area 100
net 100.100.100.2 0.0.0.0 area 100
net 100.100.100.3 0.0.0.0 area 100
net 12.12.12.1 0.0.0.0 area 0
redistribute eigrp 1 subnets
!
router eigrp 1
net 100.100.100.4 0.0.0.0
net 100.100.100.5 0.0.0.0
net 100.100.100.6 0.0.0.0
net 100.100.100.7 0.0.0.0
no au

Konfigurasi R2

hostname R2
!
interface Lo0
ip add	2.2.2.2 255.255.255.255
!
interface s0/0
no sh
ip add	12.12.12.2 255.255.255.0
!
interface fa0/0
no sh
ip add	23.23.23.2 255.255.255.0
!
router os 1
router-id 2.2.2.2
log-adj
net	2.2.2.2 0.0.0.0 area 1
net	12.12.12.2 0.0.0.0 area 0
net	23.23.23.2 0.0.0.0 area 1

Konfigurasi R3

hostname R3
!
interface Lo0
ip add	3.3.3.3 255.255.255.255
!
interface fa0/0
no sh
ip add	23.23.23.3 255.255.255.0
!
router os 3
router-id 3.3.3.3
log adj
net	3.3.3.3 0.0.0.0 area 1
net 23.23.23.3 0.0.0.0 area 1

Verifikasi

Verifikasi routing yang ada di R3

R3#sh ip rou
<output dipotong>
Gateway of last resort is not set

     1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/66] via 23.23.23.2, 00:10:22, FastEthernet0/0
     2.0.0.0/32 is subnetted, 1 subnets
O       2.2.2.2 [110/2] via 23.23.23.2, 00:10:22, FastEthernet0/0
     100.0.0.0/32 is subnetted, 7 subnets
O E2    100.100.100.4 [110/20] via 23.23.23.2, 00:10:22, FastEthernet0/0
O E2    100.100.100.5 [110/20] via 23.23.23.2, 00:10:22, FastEthernet0/0
O E2    100.100.100.6 [110/20] via 23.23.23.2, 00:10:22, FastEthernet0/0
O E2    100.100.100.7 [110/20] via 23.23.23.2, 00:10:24, FastEthernet0/0
O IA    100.100.100.1 [110/66] via 23.23.23.2, 00:10:24, FastEthernet0/0
O IA    100.100.100.2 [110/66] via 23.23.23.2, 00:10:24, FastEthernet0/0
O IA    100.100.100.3 [110/66] via 23.23.23.2, 00:10:24, FastEthernet0/0
     3.0.0.0/32 is subnetted, 1 subnets
C       3.3.3.3 is directly connected, Loopback0
     23.0.0.0/24 is subnetted, 1 subnets
C       23.23.23.0 is directly connected, FastEthernet0/0
     12.0.0.0/24 is subnetted, 1 subnets
O IA    12.12.12.0 [110/65] via 23.23.23.2, 00:10:26, FastEthernet0/0

Menampilkan OSPF database di R3

R3#sh ip ospf database

            OSPF Router with ID (3.3.3.3) (Process ID 3)

                Router Link States (Area 1)---------> LSA Type 1

Link ID         ADV Router      Age         Seq#       Checksum Link count
2.2.2.2         2.2.2.2         198         0x80000005 0x001A5C 2
3.3.3.3         3.3.3.3         159         0x80000004 0x002D3E 2

                Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
23.23.23.2      2.2.2.2         198         0x80000002 0x00E8EC

                Summary Net Link States (Area 1)-------> LSA Type 3

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         2.2.2.2         445         0x80000002 0x00A945
12.12.12.0      2.2.2.2         445         0x80000002 0x001CB3
100.100.100.1   2.2.2.2         445         0x80000002 0x00AF15
100.100.100.2   2.2.2.2         445         0x80000002 0x00A51E
100.100.100.3   2.2.2.2         445         0x80000002 0x009B27

                Summary ASB Link States (Area 1)--------> LSA Type 4

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         2.2.2.2         445         0x80000002 0x00915D

                Type-5 AS External Link States----------> LSA Type 5

Link ID         ADV Router      Age         Seq#       Checksum Tag
100.100.100.4   1.1.1.1         906         0x80000002 0x0081E8 0
100.100.100.5   1.1.1.1         646         0x80000002 0x0077F1 0
100.100.100.6   1.1.1.1         646         0x80000002 0x006DFA 0
100.100.100.7   1.1.1.1         646         0x80000002 0x006304 0

Tipe LSA dan Kode Routing Table OSPF

Berikut adalah type route OSPF yang biasa muncul di output dari perintah “show ip route”:

Tipe LSA

Kode

Deskripsi
1 (Router) O Digenerate oleh semua router; daftar neighbor dan cost menuju mereka; dipropagasi di dalam satu area
2 (Network) O Digenerate oleh DR pada multiaccess network; dipropagasi di dalam satu area
3 (Inter-area summary) O IA Mengadvertise summary dari satu area ke area lainnya
4 (ASBR Summary) O IA Mengadvertise lokasi dimana ASBR berada
5 (External) O E1/O E2 Mengadvertises ruter eksternal ke dalam Autonomous System

Daftar Sumber:

  1. Materi Training CCNP Full Lab ID-Networkers, 2011
  2. Website www.packetnote.com/ospf-open-shortest-path-first/

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