Indeed, not only do they stop forwarding on the copper SFPs, the SFP tends
to drop off entirely (just generates that lovely HULC error when you query
the ethernet-controller phy detail).

And, for extra fun, some iterations of the hardware will also (when the SFP
fails) start generating:

"%ILET-1-AUTHENTICATION_FAIL: This Switch may not have been manufactured by
Cisco or with Cisco's authorization..."

Which causes the switch to stop forwarding all traffic. Requires a full
power cycle to restore.


On Mon, Oct 12, 2015 at 10:20 AM, Nick Cutting <[email protected]>
wrote:

> I've never got over the bug that plagues copper SFP's in this model of
> switch.  They just stop forwarding traffic randomly.
>
> They keep promising a fix - I still haven't seen anything rock solid.
>
> -----Original Message-----
> From: cisco-nsp [mailto:[email protected]] On Behalf Of
> Ian Hiddleston
> Sent: 12 October 2015 17:29
> To: [email protected]
> Subject: [c-nsp] Cisco WS2960-X - Are these switches lemons or is there a
> stable release?
>
> Hi guys,
>
> For reasons best left alone, I’ve ended up with a pair of Cisco 2960-X’s
> (WS-C2960X-48TD-L to be precise). I’ve had nothing but trouble with them so
> far, hence asking the list. Does anyone know if there is a stable software
> image for them that doesn’t crash when you SSH to it or drop the stack
> module offline and split brain for fun?
>
> Thanks,
> Ian
>
>
> Ian Hiddleston | Senior Network Analyst | Civica UK Limited
> Tel: 0845 055 2323
> e-mail: [email protected] | http://www.civica.co.uk<
> http://www.civica.co.uk/>
>
>
> ■ Civica commits to the next generation by joining The 5% Club.. more<
> https://www.civica.co.uk/articles/816-Civica-commits-to-the-next-generation-by-joining-The-5-Club
> >
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> https://www.civica.co.uk/articles/813-The-Great-British-Cloud-off>
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> >
>
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>
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-- 
Hagen Amen : Multco Network : 503-988-5227
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