[c-nsp] Odd behavior: OSPF on a physical port of an SVI

[Rick Ernst]

Two hits on heat-sink/thermal failure.  I'll see what things looks like
during the next maintenance window when I pull the card.

Thanks,


On Sun, Mar 7, 2010 at 10:58 AM, Alan Buxey <A.L.M.Buxey at lboro.ac.uk> wrote:

> Hi,
>
> > I've run into weird problems like this when module heatsinks failed.
> > Traffic would pass so long as the overheating hardware didn't mess it
> > up.  In my case, BGP would establish, but die out after TCP handshake.
> > I was able to ping with sufficiently small packets, but above a
> > certain size traffic would drop.
> >
> > This was on a 6816-GBIC and the heatsink failure only affected one of
> > the FEs.  If I moved to a port on the other FE, things would work
> > normally.
>
> just to weigh in with this one...we had a very similar recent issue.
> one of the surface-mount-attached clips that hold the heat sinks into
> place on a 6748 failed...thus the heatsink slipped out of place and
> thermal contact etc was lost...the symptom that the resulted in?
>
> the blade could spew out packets on the ports controlled via that ASIC
> but within 5 minutes of powering the module on, all inbound traffic was
> dead.
>
> quirky....but thats the way these things go.
>
> alan
>