Advanced IP Network Design (CCIE Professional Development)

Answers to Chapter 3 Review Questions

1:	Why is it important to consider link capacities when designing redundancy?
A1:	The backup link should be able to handle the full traffic load normally placed on the primary link.
2:	Why is designing redundancy in the core easier than at other layers?
A2:	Suboptimal routing should be easier to deal with because the devices in the network core should have full routing information.
3:	If all the core routers are in one building, what is a natural way to provide redundancy?
A3:	Connect them with multiple high speed LANs.
4:	How many links on a ring core can fail before at least one section of the core is isolated?
A4:	Two.
5:	Do ring designs provide consistent hop count through the core network when a link fails? ...