Day 44

1. Internal BGP is communication between routers within an AS. Once the communication leaves the AS destined for another, it becomes external BGP (eBGP).

2. BGP is used primarily to exchange Network Layer Reachability Information (NLRI) between routing domains or ASNs. The NLRI is composed of a ____ and a _____.

3. BGP speaking routers (speakers) form neighbor relationships with other BGP speakers. The neighbors are referred to as peers. The routers communicate using ___ port ___.

4. BGP must be configured using the _______ global configuration command.

5. BGP tracks hops rather than AS numbers, which could number in the hundreds (it’s a path vector protocol).

6. BGP NLRI information is exchanged between BGP speakers (via TCP) using _____ messages.

7. You can display a summary of the BGP neighbors with the ______ command.

8. BGP deals with routing between AS numbers. These ASNs must be unique and are usually assigned by regional Internet registries—the available numbers range from ____.