Task: Configure OSPF virtual link to allow full connectivity for the discontigious backbone area (Area 0).

Objectives:

1. Configure all IP addresses as specified in the topology picture.
2. Configure loopbacks as given in the topology.
3. Configure OSPF (OSPF 100) on all routers.
4. Create virtual link between Router R4 and Router R5.
5. Ensure all the areas have connectivity to the backbone area.

Results: Explain your results with the help of show commands by screen shoots.

also write the configuration used.

AREA O Loopback: 4.4.4.4/8 R4 192.168.1.0/24 AREA 3 AREA 2 R3 AREA 1 192.168.15.0/24 192.168.25.0/24 Loopback: 3.3.3.3/8 Loopback: 2.2.2.2/8 192.168.100.0/24 Loopback: 5.5.5.5/8 6.6.6.6/8 AREA O AREA O Loopback: 4.4.4.4/8 R4 192.168.1.0/24 AREA 3 AREA 2 R3 AREA 1 192.168.15.0/24 192.168.25.0/24 Loopback: 3.3.3.3/8 Loopback: 2.2.2.2/8 192.168.100.0/24 Loopback: 5.5.5.5/8 6.6.6.6/8 AREA O