Chapter 11 - BGP

Question 1

address family

Answer 1

A major classification of type of network protocol, such as IPv4, IPv6, or VPNv4.

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

autonomous system (AS)

Answer 4

A set of routers running the same routing protocol under a single realm of control and authority.

Question 5

eBGP session

Answer 5

A BGP session maintained with BGP peers from a different autonomous system.

Question 6

iBGP session

Answer 6

A BGP session 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 BGP 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-known discretionary

Answer 11

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

Question 12

well-known mandatory

Answer 12

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