[c-nsp] Strange X2 Temperature Flaps

Robert Williams Robert at CustodianDC.com
Thu Mar 17 13:10:10 EDT 2016

Hi All,

Excellent thanks for this, I'm surprised we have never seen it before but it certainly seems like a perfect match for our symptoms. That has saved me a lot of additional time trying to work this out. I guess those links must have been added at the same time 6 months ago :)

So, many thanks everyone!



Robert Williams
Custodian Data Centre
Email: Robert at CustodianDC.com

-----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Saku Ytti
> Sent: Thursday, March 17, 2016 12:20 PM
> To: Robert Williams <Robert at custodiandc.com>
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Strange X2 Temperature Flaps
> This is buggy microcontroller from gigalight where after 2**31 1/100th
> of a second you start to write clock in temperature sensor memory-area.
> Fun times when you have tons of these, and in maintenance window boot
> lot of devices, then after 2**31 has passed, they all go down at the
> same time. Reminder that no amount of redundancy really guarantees you
> anything.
> For what it is worth, gigalight handled this issue extremely well for
> us, even though we didn't do any business with them. But the broker who
> sold them to us, 'network wide' was my worst experience ever.
> --
>   ++ytti

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