Considering This Topology:
Which is a part of the Practical Networking youtube educational channel, we can see three areas.
The teacher said that all traffic should go through Area 0 to keep a Hub and Spoke design, and to avoid routing loops.
My questions:
1- Isn't OSPF a loop-free protocol? Shouldn't it avoid loops automatically?
2- What happens if we add new router R8 to:
- Area 88 and Area 99?
- Area 88, Area 99, and Area 0?
I tried to find an answer on the Internet, but it is always around the subject and not to the point answer. I also tried to create a Packet Tracer lab to simulate the topology but I couldn't find a 4-port router to simulate the R03 router.
As I am a novice, I will appreciate simplified answers.