Introduction

Troubleshooting a discrepancy between convergence time of different VRFs with identical settings, running over the same topology, I got the chance delve deeper into OSPF timers. Since it took a while to wrap my head around all the moving parts and I only fully grokked it after drawing everything on a whiteboard for a colleague, I decided to explain this thoroughly here.

This will be a bit of a long read. In short: If you don’t set your LSA accept timers lower than your LSA send timers, you will have to wait for your retransmission time-out get

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