Information Technology Reference
In-Depth Information
Border Gateway Protocol
This chapter covers BGP concepts listed in the CCIE blueprint for the written test. The BGP
design concepts include the following: neighbors, decision algorithm, iBGP, eBGP, peer
groups, route reflectors, confederations, attributes, autonomous systems, route maps, and
filters.
“Do I Know This Already?” Quiz
The purpose of this assessment quiz is to help you determine how to spend your limited
study time. If you can answer most or all of these questions, you might want to skim the
Foundation Topics section and return to it later as necessary. Review the Foundation
Summary section and answer the questions at the end of the chapter to ensure that you have
a strong grasp of the material covered. If you intend to read the entire chapter, you do not
necessarily need to answer these questions now. If you find these assessment questions
difficult, read through the entire Foundation Topics section and review it until you feel
comfortable with your ability to answer all the “Q & A” questions at the end of the chapter.
The following questions are repeated at the end of the chapter in the Q & A section with
additional questions to test your mastery of the material.
Select the best answer. Answers to these questions are in the Appendix, “Answers to Quiz
Questions.”
A router has the following configuration. Which routing protocol are you using?
1
router bgp 10
neighbor 1.1.1.1 remote-as 10
a. OBGP with an external neighbor
b. BGP with an internal neighbor
c. BGP with an external neighbor
d. EIGRP with an internal neighbor
MED is used for which of the following functions?
2
a. To give a hint to the routers on what outbound path to take
b. To give a hint to the confederation routers on what outbound path to take
c. To give a hint to the external BGP peers on what inbound path to take
d. To give a hint to local BGP peers on what inbound path to take
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