July 2004
Intermediate to advanced
448 pages
10h 7m
English
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Timers
All routing protocols have timers, used to determine when an apparently inactive peering relationship should be dropped and the routes learned through that peering relationship should be no longer used. Routing protocols also have timers to prevent a network from never converging when faced with rapid changes in the network topology. We will examine both types of timers in the following sections.
Hold and Keepalive Timers
The hold and keepalive timers in BGP provide a simple test for peer aliveness. Since a BGP speaker only transmits information when its local databases change, there are no regular messages transmitted between two BGP peers. If a BGP speaker fails, there's no reason its peers should know it has failed, since a failure ...
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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.