Task 1 :- Create topology as given in pic

 Task 2 :- Configure ip address given topology

 Task 3 :- Configure loopback According given topology

 Task 4 :- Configure OSPF
 
 Task 5 :- Check communication in R1 to R3

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Task 1 :- Create topology as given in pic

 
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Task 2 :- Configure ip address given topology

 R1

R1#
R1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#
R1(config)#interface fastEthernet 0/0
R1(config-if)#ip address 192.168.12.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#

R2

R2#
R2#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#
R2(config)#interface fastEthernet 0/0
R2(config-if)#ip address 192.168.12.2 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#

 other port 0/1

R2(config)#
R2(config)#interface fastEthernet 0/1
R2(config-if)#ip address 192.168.23.1 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#

 R3

R3#
R3#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#
R3(config)#interface fastEthernet 0/1
R3(config-if)#ip address 192.168.23.2 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#exit
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Task 3 :- Configure loopback According given topology


R1(config)#
R1(config)#interface loopback 0
R1(config-if)#ip address 1.1.1.1 255.255.255.0
R1(config-if)#exit
R1(config)#

R2



R2(config)#interface loopback 0
R2(config-if)#ip address 2.2.2.2 255.255.255.0
R2(config-if)#exit
R2(config)#




R3

R3(config)#int loopback 0
R3(config-if)#ip address 3.3.3.3 255.255.255.0
R3(config-if)#exit
R3(config)#
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 Task 4 :- Configure OSPF AS 1 (Area 0 )

R1(config)#
R1(config)#Router ospf 1
R1(config-router)#network 192.168.12.0 0.0.0.255 area 0
R1(config-router)#network 1.1.1.0 0.0.0.255 area 0
R1(config-router)#
*Mar  1 00:10:52.039: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on FastEthernet0/0 from LOADING to FULL, Loading Done
R1(config-router)#exit

R2

R2(config)#
R2(config)#router ospf 1
R2(config-router)#network 192.168.12.0 0.0.0.255 area 0
R2(config-router)#network 192.168.23.0 0.0.0.255 area 0
R2(config-router)#network 2.2.2.0 0.0.0.255 area 0
R2(config-router)#exit
R2(config)#

R3

R3(config)#
R3(config)#router ospf 1
R3(config-router)#network 192.168.23.0 0.0.0.255 area 0
R3(config-router)#network 3.3.3.0 0.0.0.255 area 0
R3(config-router)#exit
R3(config)#


 

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Task 5 :- Check communication in R1 to R3


R1#
R1#show ip route ospf
     2.0.0.0/32 is subnetted, 1 subnets
O       2.2.2.2 [110/11] via 192.168.12.2, 00:13:45, FastEthernet0/0
     3.0.0.0/32 is subnetted, 1 subnets
O       3.3.3.3 [110/21] via 192.168.12.2, 00:12:53, FastEthernet0/0
O    192.168.23.0/24 [110/20] via 192.168.12.2, 00:13:03, FastEthernet0/0
R1#

ping R1 to R3


R1#ping 3.3.3.3

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/63/88 ms
R1#
 
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