Objective:

   >  Formed OSPF neighbors between MANILA and MELBOURNE Router
  >  Examine the  OSPF database (LSDB) of both MANILA and MELBOURNE router.

Below will be the configurations of the MANILA Router:

R1#config t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#host
R1(config)#hostname MANILA
MANILA(config)#int s3/0
MANILA(config-if)#ip address 192.168.12.1 255.255.255.0
MANILA(config-if)#no shut
MANILA(config-if)#exit

MANILA(config)#int lo1
MANILA(config-if)#ip address 100.100.100.1 255.255.255.0
MANILA(config-if)#exit

MANILA(config)#router ospf 1
MANILA(config-router)#network 192.168.12.0 0.0.0.255 area 0
MANILA(config-router)#network 100.100.100.0 0.0.0.255 area 0
MANILA(config-router)#^Z

Below will be the configurations of the MELBOURNE Router:

R2#config t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#hostname MELBOURNE
MELBOURNE(config)#int s3/0
MELBOURNE(config-if)#ip address 192.168.12.2 255.255.255.0
MELBOURNE(config-if)#no shut
MELBOURNE(config-if)#exit
MELBOURNE(config)#int lo1
MELBOURNE(config-if)#ip add 200.200.200.1 255.255.255.0

MELBOURNE(config)#router ospf 1
MELBOURNE(config-router)#network 192.168.12.2 0.0.0.255 area 0
MELBOURNE(config-router)#network 200.200.200.0 0.0.0.255 area 0
MELBOURNE(config-router)#^Z
MELBOURNE#

Now, let’s take a look into the OSPF Database on both routers,

MANILA#show ip ospf database

            OSPF Router with ID (100.100.100.1) (Process ID 1)

                Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
100.100.100.1   100.100.100.1   40          0x80000008 0x002F8B 3
200.200.200.1   200.200.200.1   18          0x80000003 0x00ADB6 3
MANILA#

MELBOURNE#sh ip ospf database

Link ID         ADV Router      Age         Seq#       Checksum Link count
100.100.100.1   100.100.100.1   24          0x80000008 0x002F8B 3
200.200.200.1   200.200.200.1   0           0x80000003 0x00ADB6 3
MELBOURNE#

So what does the results tells us?