We have 2 bfd sessions for OSPF and can see the missed-hellos counter is incremented and resulting in bfd and ofpf to go down when 3 missed-hellos are reported.
I also see the counter Rx session Not Found as non-zero in the output of show bfd counters.
Please help me to troubleshoot and understand
1) Missed-hellos means that the neighbor did not sent the bfd hello or does it mean that neighbor sent the hello but EXOS did not process it. I did not see any good explanation in the EXOS reference document.
2) What is Rx session Not Found here.
It is BD8806 (EXOS 16.2) having two bfd sessions (ospf ) with 300msx3 timers and I did not see any other abnormal thing which can bring the bfd down.
Any responses on the troubleshooting are highly appreciated.
Thanks in advance