Please Whitelist This Site?
I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)
If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.
If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.
Thanks for your understanding!
Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide
NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.
BGP Fundamentals and General Operation
If you were to ask the average Internet
user, or even that typical network administrator, to make a list of
the ten most important TCP/IP protocols, it's probable that BGP wouldn't
often show up. Routing protocols are worker bees of the
TCP/IP suite and just not very exciting. The reality, however, is that
BGP is a critically important protocol to the operation of larger internetworks
and the Internet itself. It is the glue that binds smaller
internetworks (autonomous systems) together, and it ensures that every
organization is able to share routing information. It is this function
that lets us take disparate networks and internetworks and find efficient
routes from any host to any other host, regardless of location.
In this section I begin our look
at the very important BGP protocol by covering its basic concepts and
general operation. I start, as usual, with an overview of the protocol
and discussion of its history, standards and versions, including a discussion
of its key features and characteristics. I then cover basic operational
concepts, including topology, the notion of BGP speakers and
neighbor relationships. I discuss BGP traffic types and how policies
can be used to control traffic flows on the internetwork. I explain
how BGP routers store and advertise routes, and the function of Routing
Information Bases (RIBs). I describe the basic algorithm used by BGP
and how path attributes describe routes. I then provide a summary of
how the BGP route selection process operates. I conclude with a general
description of BGP's operation and its high-level use of various messages.
|If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!|
Table Of Contents - Contact Us
The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005
© Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.