I am doing a Chapter 3 Lab 3-2, Multi-Area OSPF with Stub Areas and Authentication and i would like someone to explain to me the advantages and disadavantages of using the following in configuring OSPF:
- Normal Areas
- Stub Areas
- Totally Stub Areas
- NSSA
I am preparing to certify and i am trying to get my heard around these concepts its all a bit fuzzy rite now

Heeeelp