{{indexmenu_n>052}} ====== Cisco : Dynamic routing - OSPF (single area) ====== Open Shortest Path First (OSPF) adalah protokol gateway interior (IGP) yang digunakan secara luas untuk melakukan routing paket-paket IP dalam satu sistem otonom (AS) dalam jaringan IP. OSPF dirancang untuk menghitung jalur terpendek secara efisien untuk paket data yang bergerak dari sumber ke tujuan. ===== Syntax ===== ==== Konfigurasi OSPF ==== ^Command ^Description ^ |''%%R1(config)#router ospf [PID]%%'' |Process ID [PID] (1 - 65535) | |''%%R1(config-router)#router-id [a.b.c.d]%%'' |menual mengatur router ID, dengan IPv4 format. | |''%%R1(config-router)#network [network-address] [wildcard-mask] area [area id]%%''|Untuk semua network yang terhubung langsung. Area ID 0 - 4294967295| **''%%area id%%'' dapat ditulis dengan format ip adress** ProTip: Begaimana cara mengetahui network yang terhubung langsung dengan router?\\ apat diketahu dengan ''%%R1(config)#do show ip route con%%'' command. ==== OSPF verification ==== ^Command ^Description ^ |''%%R1#show ip protocols%%'' |PID, router ID, advertised networks, neighbors dan administrative distance.| |''%%R1#show ip route%%'' | | |''%%R1#show ip ospf neighbor%%'' |lis OSPF neighbor | |''%%R1#show ip ospf%%'' |identify the PID, router ID, area information, dan waktu | |''%%R1#show ip ospf interface brief%%'' | | |''%%R1#show ip ospf interface%%'' |list ospf interfaces | |''%%R1#show ip ospf interface [int-id]%%''|Lebih detail | Contoh: router ospf 1 network X.X.X.0 0.0.0.255 area 0 network Y.Y.Y.0 0.0.0.3 area 0 ===== Topologi ===== {{ :networking:cisco:cisco_template_routing_rev.png?nolink |}} * **R1 : Konfigurasi IP** R1(config)#interface FastEthernet0/0 R1(config-if)#ip address 192.168.1.1 255.255.255.0 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#interface Serial0/0/0 R1(config-if)#ip address 10.0.1.1 255.255.255.252 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#interface Serial0/1/0 R1(config-if)#ip address 10.0.0.1 255.255.255.252 R1(config-if)#no shutdown R1(config-if)#exit * **R2 : Konfigurasi IP** R2(config)#interface FastEthernet0/0 R2(config-if)#ip address 192.168.2.1 255.255.255.0 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#interface Serial0/0/0 R2(config-if)#ip address 10.0.2.1 255.255.255.252 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#interface Serial0/1/0 R2(config-if)#ip address 10.0.0.2 255.255.255.252 R2(config-if)#no shutdown * **R3 : Konfigurasi IP** R3(config)#interface FastEthernet0/0 R3(config-if)#ip address 192.168.3.1 255.255.255.0 R3(config-if)#no shutdown R3(config-if)#exit R3(config)#interface Serial0/0/0 R3(config-if)#ip address 10.0.2.2 255.255.255.252 R3(config-if)#no shutdown R3(config-if)#exit R3(config)#interface Serial0/1/0 R3(config-if)#ip address 10.0.1.2 255.255.255.252 R3(config-if)#no shutdown * **PCs : Konfigurasi IP** {{ :networking:cisco:cisco_pcsetip.png?nolink |}} ^PC ^IP Address ^Subnet Mask ^Gateway | PC1 | 192.168.1.2 | 255.255.255.0 | 192.168.1.1 | | PC2 | 192.168.2.2 | 255.255.255.0 | 192.168.2.1 | | PC3 | 192.168.3.2 | 255.255.255.0 | 192.168.3.1 | Hubungkan semua segment jaringan hanya dengan ospf dan hanya menggunakan single area ===== Konfigurasi ===== * **R1 : Konfigurasi OSFP** R1(config)#router ospf 1 R1(config-router)#network 192.168.1.0 0.0.0.255 area 0 R1(config-router)#network 10.0.0.0 0.0.0.3 area 0 R1(config-router)#network 10.0.1.0 0.0.0.3 area 0 * **R2 : Konfigurasi OSFP** R2(config)#router ospf 1 R2(config-router)#network 192.168.2.0 0.0.0.255 area 0 R2(config-router)#network 10.0.0.0 0.0.0.3 area 0 R2(config-router)#network 10.0.2.0 0.0.0.3 area 0 * **R3 : Konfigurasi OSFP** R3(config)#router ospf 1 R3(config-router)#network 192.168.3.0 0.0.0.255 area 0 R3(config-router)#network 10.0.1.0 0.0.0.3 area 0 R3(config-router)#network 10.0.2.0 0.0.0.3 area 0 ===== Testing ===== ===== Testing ===== * **Route tables R1** R1#show ip route Codes: C - connected, S - static, I - IGRP, 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 10.0.0.0/30 is subnetted, 3 subnets C 10.0.0.0 is directly connected, Serial0/1/0 C 10.0.1.0 is directly connected, Serial0/0/0 O 10.0.2.0 [110/128] via 10.0.0.2, 00:02:20, Serial0/1/0 [110/128] via 10.0.1.2, 00:02:20, Serial0/0/0 C 192.168.1.0/24 is directly connected, FastEthernet0/0 O 192.168.2.0/24 [110/65] via 10.0.0.2, 00:04:16, Serial0/1/0 O 192.168.3.0/24 [110/65] via 10.0.1.2, 00:02:30, Serial0/0/0 * **Route tables R2** R2#show ip route Codes: C - connected, S - static, I - IGRP, 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 10.0.0.0/30 is subnetted, 3 subnets C 10.0.0.0 is directly connected, Serial0/1/0 O 10.0.1.0 [110/128] via 10.0.0.1, 00:03:12, Serial0/1/0 [110/128] via 10.0.2.2, 00:03:12, Serial0/0/0 C 10.0.2.0 is directly connected, Serial0/0/0 O 192.168.1.0/24 [110/65] via 10.0.0.1, 00:05:08, Serial0/1/0 C 192.168.2.0/24 is directly connected, FastEthernet0/0 O 192.168.3.0/24 [110/65] via 10.0.2.2, 00:03:12, Serial0/0/0 * **Route tables R3** R3#show ip route Codes: C - connected, S - static, I - IGRP, 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 10.0.0.0/30 is subnetted, 3 subnets O 10.0.0.0 [110/128] via 10.0.1.1, 00:03:44, Serial0/1/0 [110/128] via 10.0.2.1, 00:03:44, Serial0/0/0 C 10.0.1.0 is directly connected, Serial0/1/0 C 10.0.2.0 is directly connected, Serial0/0/0 O 192.168.1.0/24 [110/65] via 10.0.1.1, 00:03:54, Serial0/1/0 O 192.168.2.0/24 [110/65] via 10.0.2.1, 00:03:44, Serial0/0/0 C 192.168.3.0/24 is directly connected, FastEthernet0/0 * **Test Ping PC to PC** C:\>ping 192.168.2.2 Pinging 192.168.2.2 with 32 bytes of data: Reply from 192.168.2.2: bytes=32 time=23ms TTL=126 Reply from 192.168.2.2: bytes=32 time=32ms TTL=126 Reply from 192.168.2.2: bytes=32 time=22ms TTL=126 Reply from 192.168.2.2: bytes=32 time=31ms TTL=126 Ping statistics for 192.168.2.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 22ms, Maximum = 32ms, Average = 27ms C:\>ping 192.168.3.2 Pinging 192.168.3.2 with 32 bytes of data: Reply from 192.168.3.2: bytes=32 time=15ms TTL=126 Reply from 192.168.3.2: bytes=32 time=13ms TTL=126 Reply from 192.168.3.2: bytes=32 time=22ms TTL=126 Reply from 192.168.3.2: bytes=32 time=13ms TTL=126 Ping statistics for 192.168.3.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 13ms, Maximum = 22ms, Average = 15ms