05-06-2014 12:37 AM - edited 03-04-2019 10:55 PM
Hi All,
We are having Cisco 4500 switch running on (cat4500e-UNIVERSALK9-M), Version 03.04.00.SG RELEASE SOFTWARE (fc3) with ROM: 15.0(1r)SG7.
Recently we were having issue with WAN links flap (OSPF neighbor) , The WAN links connected on Gig ports & found nothing wrong on those ports or nothing at WAN provider end.
After reloading switch all come back to normal. but again after a week same issue reoccurred.
is there any Bug causing this weird behavior ?
05-06-2014 05:19 AM
Are you seeing WAN link flap (and so OSPF flap) or just OSPF flap while WAN link stays up?.
05-06-2014 06:11 AM
Hi Kumar,
WAN link flaps are there. The switch interface where WAN links connected goes up/down repetitively.
04-11-2018 01:56 AM
Look at the TSHOOT section in this doc for OSPF , debug ip ospf monitor may help you pinpoint the issue
https://www.cisco.com/networkers/nw00/pres/2206_7-5.pdf
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