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Wednesday, October 26, 2016

Konfigurasi Routing OSPF Single Area - Cisco Packet Tracer

RBJ
Title
:
Konfigurasi Routing OSPF Single Area
Issue Date
:
27 Oktober 2016
Prepare by
:
Agung Ma’ruf
Teacher
:
Suyatno, S.Kom



SMK AL-BAHRI KOTA BEKASI

Untuk mengkonfigurasikan OSPF pada router, langkah yang harus dilakukan relatif sama dengan routing protocol yang lain. Administrator jaringan hanya perlu mengaktfikan OSPF, kemudian meng-advertise network yang ingin diperkenalkan kepada router lain. Namun network yang di-advertise harus dimasukan ke dalam salah satu area OSPF. Jika hanya menerapkan Single Area OSPF, maka harus dibuat minimal satu Area yang dinamakan Backbone Area, atau Area 0.
Bila pada routing protocol lain, saat akan meng-advertise sebuah network address harus disertakan subnetmask atau prefix, maka pada Router Cisco advertise dilakukan dengan menyertakan wildcard (kebalikan dari bit subnetmask).
Topologi routing OSPF single area :



Berikut ini adalah cara konfigurasi OSPF single area :
R1 :
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#int gi0/0
R1(config-if)#ip add 10.10.10.1 255.255.255.0
R1(config-if)#no sh
R1(config-if)#ex
R1(config)#int gi0/1
R1(config-if)#ip add 30.30.30.1 255.255.255.0
R1(config-if)#no sh
R1(config)#do wr
Building configuration...
[OK]

Konfigurasi routing ospf single area R1 :
R1(config)#router ospf 1
R1(config-router)#network 10.10.10.0 0.0.0.255 area 0
R1(config-router)#network 30.30.30.0 0.0.0.255 area 0
R1(config-router)#do wr
Building configuration...
[OK]
R2 :
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int gi0/0
Router(config-if)#ip add 10.10.10.2 255.255.255.0
Router(config-if)#no sh
Router(config-if)#ex
Router(config)#int gi0/1
Router(config-if)#ip add 20.20.20.1 255.255.255.0
Router(config-if)#no sh
Router(config-if)#ex
Router(config)#int gi0/2
Router(config-if)#ip add 40.40.40.1 255.255.255.0
Router(config-if)#no sh
Router(config-if)#do wr
Building configuration...
[OK]
Konfigurasi routing ospf single area R2 :
Router(config-if)#router ospf 1
Router(config-router)#network 40.40.40.0 0.0.0.255 area 0
Router(config-router)#network 10.10.10.0 0.0.0.255 area 0
Router(config-router)#network 20.20.20.0 0.0.0.255 area 0
Router(config-router)#do wr
Building configuration...
[OK]
R3 :
Router>en
Router#conf t
Router(config)#hostname R3
R3(config)#int gi0/0
R3(config-if)#ip add 20.20.20.2 255.255.255.0
R3(config-if)#no sh
R3(config-if)#ex
R3(config)#int gi0/1
R3(config-if)#ip add 50.50.50.1 255.255.255.0
R3(config-if)#no sh
Konfigurasi routing ospf single area R3:
R3(config-if)#router ospf 1
R3(config-router)#network 50.50.50.0 0.0.0.255 area 0
R3(config-router)#network 20.20.20.0 0.0.0.255 area 0
R3(config-router)#do wr
Building configuration...
[OK]

R1 Cek Table Routing :
R1(config)#do sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route

Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.10.10.0/24 is directly connected, GigabitEthernet0/0
L 10.10.10.1/32 is directly connected, GigabitEthernet0/0
20.0.0.0/24 is subnetted, 1 subnets
O 20.20.20.0/24 [110/2] via 10.10.10.2, 00:00:58, GigabitEthernet0/0
30.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 30.30.30.0/24 is directly connected, GigabitEthernet0/1
L 30.30.30.1/32 is directly connected, GigabitEthernet0/1
40.0.0.0/24 is subnetted, 1 subnets
O 40.40.40.0/24 [110/2] via 10.10.10.2, 00:05:34, GigabitEthernet0/0
50.0.0.0/24 is subnetted, 1 subnets
O 50.50.50.0/24 [110/3] via 10.10.10.2, 00:00:48, GigabitEthernet0/0

R1 : Menampilkan Routing ospf
R1(config)#do sh ip route ospf
20.0.0.0/24 is subnetted, 1 subnets
O 20.20.20.0 [110/2] via 10.10.10.2, 00:02:38, GigabitEthernet0/0
40.0.0.0/24 is subnetted, 1 subnets
O 40.40.40.0 [110/2] via 10.10.10.2, 00:07:14, GigabitEthernet0/0
50.0.0.0/24 is subnetted, 1 subnets
O 50.50.50.0 [110/3] via 10.10.10.2, 00:02:28, GigabitEthernet0/0
R1(config)#

R2 : Menampilkan Informasi Neighbor
Router(config-router)#do sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
30.30.30.1 1 FULL/DR 00:00:36 10.10.10.1 GigabitEthernet0/0
50.50.50.1 1 FULL/BDR 00:00:39 20.20.20.2 GigabitEthernet0/1

R3 : Menampilkan Routing Protocol
R3(config-router)#do sh ip protocol
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 50.50.50.1
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Maximum path: 4
Routing for Networks:
50.50.50.0 0.0.0.255 area 0
20.20.20.0 0.0.0.255 area 0
Routing Information Sources:
Gateway Distance Last Update
30.30.30.1 110 00:09:28
40.40.40.1 110 00:04:56
50.50.50.1 110 00:04:56
Distance: (default is 110)

R3 : Menampilkan Informasi Database Ospf
R3(config-router)#do sh ip ospf database
OSPF Router with ID (50.50.50.1) (Process ID 1)

Router Link States (Area 0)

Link ID ADV Router Age Seq# Checksum Link count
30.30.30.1 30.30.30.1 633 0x80000003 0x007a78 2
50.50.50.1 50.50.50.1 361 0x80000003 0x00ee12 2
40.40.40.1 40.40.40.1 361 0x80000005 0x000605 3

Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.10.1 30.30.30.1 633 0x80000001 0x004cdd
20.20.20.1 40.40.40.1 361 0x80000001 0x00d9ce

#. Test : Ping Dan Tracert
PC>ipconfig

FastEthernet0 Connection:(default port)

Link-local IPv6 Address.........: FE80::201:64FF:FE20:1A8B
IP Address......................: 30.30.30.2
Subnet Mask.....................: 255.255.255.0
Default Gateway.................: 30.30.30.1

PC>ping 50.50.50.2

Pinging 50.50.50.2 with 32 bytes of data:

Request timed out.
Reply from 50.50.50.2: bytes=32 time=98ms TTL=125
Reply from 50.50.50.2: bytes=32 time=44ms TTL=125
Reply from 50.50.50.2: bytes=32 time=11ms TTL=125

Ping statistics for 50.50.50.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 98ms, Average = 51ms

Tracer :
PC>tracert 50.50.50.2

Tracing route to 50.50.50.2 over a maximum of 30 hops:

1 2 ms 11 ms 3 ms 30.30.30.1
2 15 ms 17 ms 15 ms 10.10.10.2
3 0 ms 10 ms 11 ms 20.20.20.2
4 13 ms 11 ms 13 ms 50.50.50.2

Trace complete.