How to setup OSPF routing :
How to view what protocols is running:
show ip protocols
how to kill rip protocols (if exists)
configure terminal no router rip
How create OSPF protocols
configure terminal router ospf 1 [ here 1 is the process id, which has to be same to every router in the organization ] network 192.168.1.1 0.0.0.0 area 0 Or network 192.168.1.0 0.0.255.255 area 0
How to set default route to go to internet
From main router :
configure terminal router ospf 1 default-information originate
How to join Area 0 with Area 1
(Ip of Area 1 is :172.30.0.0-172.30.0.7 , Summary route: 172.30.0.0/21, Wild card mask for ospf 0.0.7.255)
configure terminal router ospf 1 network 172.30.0.0 0.0.7.255 area 1
How to summarize Are 1 Network before adding to Area 0(How to create range) :
configure terminal router ospf 1 area 1 range 172.30.0.0 255.255.248.0
How to debug ospf relation
debug ip ospf adj clear ip ospf process