Chapter 11: BGP

Question 1

address family

Answer 1

A major classification of type of network protocol, such as IPv4, or IPv6

Question 2

AS_Path

Answer 2

A BGP attribute used to track the autonomous systems a network has been advertised through as a loop-prevention mechanism.

Question 3

atomic aggregate

Answer 3

A BGP path attribute which indicates that a prefix has been summarized, and not all of the path information from component routes was included in the aggregate.

Question 4

AS

Answer 4

Autonomous System, a set of routers running the same routing protocol under a single realm of control and authority

Question 5

eBGP session

Answer 5

External BGP, a BGP session maintained with BGP peers from a different autonomous system

Question 6

iBGP session

Answer 6

Interior BGP, a BGP sessiokn maintained with BGP peers from the same Autonomous System

Question 7

LOC-RIB table

Answer 7

The main BGP table that contains all the active BFP prefixes and path attributes that is used to select the best path and install routes into the RIB

Question 8

optional non transitive

Answer 8

A BGP path attribute that might be recognized by a BGP implementation that is not advertised between autonomous systems

Question 9

optional transitive

Answer 9

A BGP path attribute that might be recognized by a BGP implementation that is advertised between autonomous systems

Question 10

path vector routing protocol

Answer 10

A routing protocol that selects the best path based on path attributes

Question 11

well know discretionary

Answer 11

A BGP path attribute recognized by all BGP implementations that may or may not be advertised by peers

Question 12

well known mandatory

Answer 12

A BGP path attribute recognized by all BGP implementations that must be advertised by peers