In this chapter, we discuss how to manage the OSPF protocol. At the macro level, a network administrator must decide how to organize an Autonomous System (AS) that runs OSPF as its routing protocol. This involves answering the following questions.
Where are the boundaries of the AS?
Which links should be preferred for data traffic, and which links should be avoided?
What information learned from other ASs should be imported into the AS? Conversely how much of the AS’s internal routing information should be advertised to other ASs?
Should the OSPF AS be divided into areas? If so, where should the area boundaries be placed?
Does the OSPF routing within the AS need to be protected from hostile attackers?
After determining the ...