July 2004
Intermediate to advanced
448 pages
10h 7m
English
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Inconsistent Routing
There are two common reasons for inconsistent routing within BGP: holes in the BGP specification, and vendors modifying the best path algorithm (to reduce the rate of flapping routes in the Internet, for instance). We'll examine two of these issues here, the indeterminism of the multiple exit discriminator and a simple change to the best path algorithm that places the older route over the route learned from the peer with the highest router ID.
Multiple Exit Discriminator Indeterminism
The MULTI_EXIT_DISC attribute may be used on external (inter-AS) links to discriminate among multiple exit or entry points to the same neighboring AS. [RFC1771].
According to RFC 1771, the multiple exist discriminator is not always compared ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.