[c-nsp] Very Strange Problems with 7513

[Kristofer Sigurdsson]

We've experienced the same thing with 75xx (don't remember the type)
with RSP8 and RSP4, VIP4-80.

We were using ATM (STM-1) and POS (also STM-1) interfaces, both VIP's kept
crashing with parity errors. Eventually, we replaced the RSP and both VIP's,
that seemed to fix the problem (replacing either the VIPs OR the RSP did not
work, we had to do both).

-Kristofer

2006/1/11, Hyunseog Ryu <r.hyunseog at ieee.org>:
>
> Hey John,
>
> What kind of RSP you are using?
> I had RSP4 with similar problems.
> Cisco told us that there is some problem with architect, and asked us to
> upgrade to RSP16.
> But eventually I removed Cisco 7507 routers from our network.
>
> Hyun
>
>
> John Neiberger wrote:
> > Earlier in the year I had a 7513 that began to see some strange issues.
> > It started with a VIP (w/two DS3 PAs) crashing. It recovered and we
> > didn't think much of it until a few weeks later when another VIP (w/ATM
> > IMA PA) crashed and did not recover. We replaced the VIP and the ATM PA
> > and thought all was well. Within a short span of time, the RSP began to
> > fail with parity errors. TAC told me that this was usually caused by
> > cosmic rays and that I didn't need to worry about it unless it happened
> > again. Well, it happened again and we replaced the RSP. We eventually
> > ended up replacing the VIP and ATM PA *again*, the RSP *again*, and the
> > other VIP with the DS3 PAs, culminating in replacing the chassis.
> >
> > That's the short story. Fast forward to October. Different cards
> > (mostly, except for two CIPs, two FSIPs, and some old Ethernet cards)
> > and different chassis. The VIP with the two DS3 PAs reloaded but
> > recovered. TAC told me that is was a soft parity error and that I didn't
> > need to worry about it unless it happened again. Nothing happened for
> > two weeks and then the RSP crashed. We replaced it and all has been well
> > until two days ago when the VIP with the ATM PA died. I came in last
> > night and replaced it, and my RSP crashed! Again, it is with memory
> > parity errors, and it crashed three times in just a few hours. I
> > replaced it with a spare RSP so I think everything is stable for the
> > moment.
> >
> > But, TAC appears to be stumped. The crash files for the VIPs and the
> > RSP make it look as if they are entirely unrelated events, but they most
> > certainly are related somehow...but how? This is a new chassis and
> > mostly new cards. I have two thoughts: 1) a bad power feed from the PDU
> > in the data center, or 2) one or more of the old cards that were moved
> > from the old chassis are failing in such a way as to appear to be
> > functioning correctly yet cause problems with other cards.
> >
> > Any thoughts?
> >
> > Thanks,
> > John
> > --
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