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What is Border Gateway Protocol

Chapter 152
Encyclopedia of Information Technology Curriculum Integration
( BGP): The core routing protocol of the Internet. It works by maintaining a table of IP networks or ‘prefixes’ which designate network reachability among autonomous systems (AS). BGP does not use traditional metrics, but makes routing decisions based on path, network policies and/or rule sets. BGP was created to replace the previous routing protocol to allow fully decentralized routing in order to allow the removal of the Internet backbone network and allowed the Internet to become a truly decentralized system.
Published in Chapter:
Wide Area Networks
Raymond A. Hansen (Purdue University, USA) and Phillip T. Rawles (Purdue University, USA)
Copyright: © 2008 |Pages: 8
DOI: 10.4018/978-1-59904-881-9.ch152
Abstract
When network services must be distributed over large geographic areas, it is essential to have an understanding of the telecommunication systems on which such distribution depends. One of the most significant differences between wide area networks (WANs) and local area networks (LANs) is the general dependency on third-party carriers to provide these transmission services. Whenever data is being sent across a WAN it must be routed between locations.
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