This chapter covers the following topics, which you need to understand to pass the CCNP/CCDP/CCIP BSCI exam:
Introduction to Integrated IS-IS
OSPF and IS-IS compared
ISO addressing for Integrated IS-IS
Integrated IS-IS hierarchical structure
Basic principles of area routing
Integrated IS-IS networks and interfaces
Network layer protocols used in Integrated IS-IS
The topics in this chapter detail the routing protocol Integrated IS-IS. This chapter assumes knowledge of routing protocols and, in particular, link-state routing protocols. This chapter introduces Integrated IS-IS by explaining the protocol's terminology and fundamental concepts.
Because Integrated IS-IS is similar to the Open Shortest Path First (OSPF) protocol, you should read the chapters on OSPF and reinforce the fundamentals of link-state protocols. Differences between Integrated IS-IS and OSPF are clearly outlined within this chapter.