Tuesday, October 12, 2021

Graceful Restart and Routing Protocol Convergence

I’m always amazed when I encounter networking engineers who want to have a fast-converging network using Non-Stop Forwarding (which implies Graceful Restart). It’s even worse than asking for smooth-running heptagonal wheels.

As we discussed in the Fast Failover series, any decent router uses a variety of mechanisms to detect adjacent device failure:

  • Physical link failure;
  • Routing protocol timeouts;
  • Next-hop liveliness checks (BFD, CFM…)


source https://blog.ipspace.net/2021/10/graceful-restart-convergence.html?utm_source=atom_feed

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