Thursday, November 19, 2020

Fast Failover: Topologies

In the blog post introducing fast failover challenge I mentioned several typical topologies used in fast failover designs. It’s time to explore them.

The Basics

Fast failover is (by definition) adjustment to a change in network topology that happens before a routing protocol wakes up and deals with the change. It can therefore use only locally available information, and cannot involve changes in upstream devices. The node adjacent to the failed link has to deal with the failure on its own without involving anyone else.



source https://blog.ipspace.net/2020/11/fast-failover-topologies.html?utm_source=atom_feed

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