OSPF Multi-Area Configuration:





In this lab we will configure Multi-area OS PF using Cisco packet tracer. We have Network topology diagram in which we can see there are three router with Two area Area 0 and Area 1.





Now we have to configure OSPF in such a way in which devices in area 0 can easily communicate with devices in Area 1.









Network Topology:





IP Addressing configuration on Router -1:

Router1>

Router1>en

Router1#

Router1#config t

Router1(config)#

Router1(config)#int GigabitEthernet 0/0

Router1(config-if)#ip address 192.168.10.1 255.255.255.0

Router1(config-if)#no shutdown.





OSPF Configuration on Router-1:

Router1(config)#router ospf 10

Router1(config-router)#network 192.168.10.0 0.0.0.255 area 0

Router1(config-router)#router-id 192.168.10.1





IP Addressing configuration on Router -2:

Router2>

Router2>en

Router2#

Router2#config t

Router2(config)#

Router2(config)#int GigabitEthernet 0/0

Router2(config-if)#ip address 192.168.10.2 255.255.255.0

Router2(config-if)#no shutdown.

Router2(config)#int GigabitEthernet 0/1

Router2(config-if)#ip address 192.168.20.1 255.255.255.0





OSPF Configuration on Router-2:

Router2(config)#router ospf 10

Router2(config-router)#network 192.168.10.0 0.0.0.255 area 0

Router2(config-router)#network 192.168.20.0 0.0.0.255 area 1

Router2(config-router)#router-id 192.168.20.1





IP Addressing configuration on Router -3:

Router3>

Router3>en

Router3#

Router3#config t

Router3(config)#

Router3(config)#int GigabitEthernet 0/0

Router3(config-if)#ip address 192.168.20.2 255.255.255.0

Router3(config-if)#no shutdown.





OSPF Configuration on Router-2:

Router3(config)#router ospf 10

Router3(config-router)#network 192.168.20.0 0.0.0.255 area 1

Router3(config-router)#router-id 192.168.20.2





Verify OSPF: Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 3 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 0/3/17 ms

Router#sh ip route ospf

O IA 192.168.20.0 [110/2] via 192.168.10.2, 00:23:44, GigabitEthernet0/0



