OSPF routing protocol
OSPF is a intra-as (autonomous system ) routing protocol AS consist of group of router that are typically under same administrative rule.Gateway routers forwards packets to destination outside the AS.
Intra routing Rip protocol and Intra routing OSPF protocol are two of such protocol that is use to connect to different network belonging to different companies together.
Command line interface code for router 0,1,2
// denotes comments
Router 0:
Router>en
Router#config t
Router(config)#int fa0/0 //fastethernet 0/0 ip address assignment
Router(config-if)#ip address 172.16.10.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int s0/0/0 ///serial interface ip setup
Router(config-if)#ip add 172.16.20.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#clock rate 64000
Router(config-if)#exit
Router(config)#router ospf 1 // ospf name and process id is 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Router 1:
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int fa0/0
Router(config-if)#ip address 172.16.30.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int s0/1/0
Router(config-if)#ip address 172.16.20.2 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int se0/0/0
Router(config-if)#ip add 172.16.40.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#clock rate 64000
Router(config-if)#exit
Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Router(config-router)#exit
Router 2:
Router>en
Router#conf t
Router(config)#int s0/0/1
Router(config-if)#ip add 172.16.40.2 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int fa0/0
Router(config-if)#ip add 172.16.50.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#exit
//denoting ospf area router scan
Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Google drive link to packet file :https://drive.google.com/open?id=0B1rdDDkg6a3iRlMwbmM5dmg0ZTA
Router 0:
Router>en
Router#config t
Router(config)#int fa0/0 //fastethernet 0/0 ip address assignment
Router(config-if)#ip address 172.16.10.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int s0/0/0 ///serial interface ip setup
Router(config-if)#ip add 172.16.20.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#clock rate 64000
Router(config-if)#exit
Router(config)#router ospf 1 // ospf name and process id is 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Router 1:
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int fa0/0
Router(config-if)#ip address 172.16.30.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int s0/1/0
Router(config-if)#ip address 172.16.20.2 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int se0/0/0
Router(config-if)#ip add 172.16.40.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#clock rate 64000
Router(config-if)#exit
Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Router(config-router)#exit
Router 2:
Router>en
Router#conf t
Router(config)#int s0/0/1
Router(config-if)#ip add 172.16.40.2 255.255.255.0
Router(config-if)#no shut
Router(config-if)#int fa0/0
Router(config-if)#ip add 172.16.50.1 255.255.255.0
Router(config-if)#no shut
Router(config-if)#exit
//denoting ospf area router scan
Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Google drive link to packet file :https://drive.google.com/open?id=0B1rdDDkg6a3iRlMwbmM5dmg0ZTA
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