Tuesday, November 17, 2020

How Fast Can We Detect a Network Failure?

In the introductory fast failover blog post I mentioned the challenge of fast link- and node failure detection, and how it makes little sense to waste your efforts on fast failover tricks if the routing protocol convergence time has the same order of magnitude as failure detection time.

Now let’s focus on realistic failure detection mechanisms and detection times. Imagine a system connecting a hardware switching platform (example: data center switch or a high-end router) with a software switching platform (midrange router):

source https://blog.ipspace.net/2020/11/detecting-network-failure.html?utm_source=atom_feed

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