[c-nsp] Cisco 6500 experiencing %CPU_MONITOR-SP-6-NOT_HEARD

[Youssef Bengelloun-Zahr]

Hello Jeroen,

Thanks for the feedback. If you can find the bug IDs, please do not hesitate
to send them, it come in handy sometimes.

I have been thinking of upgrading to SXI3 (why not SXI4, hey ;-) for a long
time and have labed it, all my configs were correctly accepted.

We are running some basic BGP / MPLS and route reflection on this router,
have experienced any weird things regarding theese on SXI3 / SXI4 ?

Thanks again.

Best regards.

Y.



2010/6/16 <j.vaningenschenau at utwente.nl>

> Hi Yousef,
>
> > Just for the record, I will post this in case some guys out there
> > have the
> > same problem some day.
> >
> > Last friday, one of my core routers, a Cisco 6509 with two SUP720-3BXL
> > modules running s72033-advipservicesk9_wan-mz.122-33.SXH2a, crashed
> > and
> > restarted out of the blue.
> >
> > Crashfile info says the following :
>
> -=snip=-
>
> > Personally, I'd say I hit a bug with this but I can't seem to find it
> > using
> > cisco web tools. Anyone could point me to the right direction ?
>
> We had similar crashes in 2007-2009 (on SUP720-3B). After several *long*
> TAC cases, it turned out that we hit a couple of bugs. I can't find the
> bug IDs at the moment, but according to my email archive, the fixes were
> included in SXH4.
>
> I'd recommend trying a more recent SXH build as a lot of issues have
> been fixed since SXH2a. Or, if you're comfortable with bigger upgrade
> steps: we're running SXI3a now, which has been more stable in our
> environment than SXH has been. However, as always with bugs & features
> in IOS, YMMV.
>
> By the way, the root cause in our case had to do with interrupt masking;
> it was mainly triggered by non IP packets from directly connected
> network segments. Our case was only reproducible by replaying actual
> traffic captures, not with "synthetic" IP traffic.
>
>
> Regards,
>
> Jeroen van Ingen
> ICT Service Centre
> University of Twente, P.O.Box 217, 7500 AE Enschede, The Netherlands
>



-- 
Youssef BENGELLOUN-ZAHR ………………………………………………
Ingénieur Réseaux et Télécoms


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