[c-nsp] Will UDLD work with converters ?

[Adam Armstrong]

Nick Hilliard wrote:
> On 02/10/2009 15:24, Zoe O'Connell wrote:
>> It's worth noting that while the restriction on optics in general is
>> just annoying, the DOM restrictions do seem to be there for a reason: I
>> have a number of non-Cisco optics reporting DOM data that's obviously
>> incorrect, so I don't trust anything that's non-Cisco. Sadly, on
>> platforms where it will show you DOM from any SFP, there's no obvious
>> indication if it's a Cisco or third party optic.
>
> "show idprom interface gig x/y" should give you a pretty good idea of 
> what's plugged into the box (on a 65k).
>
> Yes, there are very poor quality transceivers out there. Cisco appears 
> to re-sell Finisar and Opnext, which would suggest that these 
> companies produce good quality kit.
>
> I'm personally not convinced that restricting equipment to use 
> own-brand transceivers does much more than create a lucrative grey 
> market for sophisticated knock-offs.  I've also heard the incorrect 
> DOM readings line being trotted out before, but I'm not convinced by 
> it:  if you buy cheap-ass equipment, you should expect high mileage 
> variation.
FWIW:

I have a great many Cisco SFPs sourced via Dimension Data (at 
ridiculously over-inflated cost, of course).

I get varying degrees of bullshit back as DOM readings from quite a few 
of them.

Sounds like more FUD to me.

adam.