[c-nsp] BFD CPU hog and traceback on me3600 and isis flapping 15.3(3)S1a

[Pete Lumbis]

How soon after the upgrade to 15.4.1 did you see the issue again?

What was that time difference compared to when you re-enabled BFD to show
TAC and now (assuming it's still stable)?


On Mon, Mar 17, 2014 at 11:36 AM, Vitkovský Adam <adam.vitkovsky at swan.sk>wrote:

> Hi folks,
>
> Anyone ran into issues with BFD on me3600 running 15.3(3)S1a or 15.4(1)S1
>
> This particular ring is up for about 3 weeks.
> Yesterday on one of the nodes where no customers are connected yet one
> colleague of mine noticed some BFD process CPU hogs and some tracebacks and
> ISIS sessions flapping cause of the BFD flaps.
> Upgrade to 15.4(1)S1 and reload did not help. What helped was to remove
> the "isis bfd" from the interface.
>
> Strange enough when I added the "isis bfd" back today so that I can see
> what's going on and to open up the case with cisco nothing happened.
> So this might be some slow buffer overflow.
>
> Has anyone experienced something like this please?
>
>
> adam
>
>
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