Chapter 14

"Do I Know This Already?"

1.A and D
5.A, B, D
6.A, B, C
7.C, B, A
9.A, B, C
10.B, E, A, D, C


1.It is ill-advised to use BGP in certain conditions:
  • When the company has only one connection into the Internet

  • When there are limited resources on the network

  • When the user is not familiar with BGP configurations or policy-based routing

2.BGP is classified as an External Gateway Protocol (EGP), as opposed to OSPF, EIGRP, RIP, and so on, which are known as Interior Gateway Protocols (IGP). BGP can send a summary of the networks known within an organization to maximize security and minimize bandwidth overhead. It is used to convey routing information between autonomous systems.
3.The easiest way to connect to the Internet is to take default routes from all providers. This provides your company with a backup path if one provider fails. Because you are only receiving one route, the processor and memory utilization is quite low.
4.Before iBGP can propagate a route, the route must be known from another source.
5.Idle, Connect, Open Sent, Open Confirm, Established.
  • Neighbor

  • BGP Table

  • Routing Table

7.The established state should display if the neighbor relationship is working correctly.
8.Load sharing.
9.For the majority of autonomous systems, synchronization is disabled—most autonomous systems are not transit autonomous systems.
10.Several answers are possible: path vector, exterior gateway protocol, interdomain routing protocol.