Information Technology Reference
In-Depth Information
CHAPTER 11
IP Multicast
This chapter reviews the characteristics and design issues of the Open Shortest Path First
Ve r s i o n 2 ( O S P F v 2 ) r o u t i n g p r o t o c o l . Fo r I P v 6 n e t w o r k s , O S P F v 3 i s a l s o c o v e r e d . O S P F v 2
and OSPFv3 are link-state routing protocols. They do not broadcast their route tables as
distance-vector routing protocols do. Routers using link-state routing protocols send infor-
mation about the status of their interfaces to all other routers in the area. Then they per-
for m databas e computat ion s to deter mine the shor te st paths to each de st inat ion. This
chapter also covers the Border Gateway Protocol (BGP), which is used to exchange routes
between autonomous systems. It is most frequently used between enterprises and service
providers. The “Route Manipulation” section covers route summarization, route filtering,
and redistribution of route information between routing protocols. The CCDA should
know where redistribution occurs when required by the network design. This chapter con-
cludes by covering IP multicast protocols.
The “Do I Know This Already?” quiz helps you identify your strengths and deficiencies in
this chapter's topics.
The 13-question quiz, derived from the major sections in the “Foundation Topics” portion
of the chapter, helps you determine how to spend your limited study time.
Ta ble 1 1-1 outlines the major topics discussed in this chapter and the “Do I Know This
Already?” quiz questions that correspond to those topics.
Ta b l e 1 1-1
“Do I Know This Already?” Foundation Topics Section-to-Question
Mapping
Foundation Topics Section
Questions Covered in This Section
OSPFv2
1, 2, 3, 4, 6,
OSPFv3
7
BGP
8, 12
Route Manipulation
9, 13
Multicast
5, 10, 11
