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BGP III: Scalability in Larger ISPs
Border Gateway Protocol (BGP) is an advanced routing protocol. This is the
third and last in a series of tutorials dealing with BGP and Internet
routing. In this tutorial the author explores issues primarily of concern
to ISPs, which usually have the largest BGP networks. Scaling issues, at
their most basic, fall into the categories of scaling inside the provider
AS and between multiple provider AS. Notice that I did not say iBGP and
eBGP. Broader issues are more involved than BGP alone. There are issues of
design, and of the interaction of interior routing with exterior routing.
This Study Guide is part of a three-part Study Guide Series addressing BPG:
Part One - The Problem, the Protocol, and Principles of Use
Part Two - Basic Multihoming; User & Provider Views
Part Three - Scalability in Larger ISPs
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