On 7 Nov 2011, at 17:00, [email protected] wrote:

> That sounds like an IOS bug.
> 
> What does "sh idprom int Tex/y | inc endor" say for one of the non-Cisco 
> parts, compared to a Cisco part?

Mystery solved: without going into the full long story, 75oC ambient 
temperature in a datacentre causing a config register to become corrupt ended 
in an ancient backup IOS being booted into, one without DOM support. Prior to 
the reboot, the only third-party Xenpaks were SR and so had no DOM support 
anyway (and I won't even go into the confusion caused by the output of idprom 
claiming our real Cisco SR xenpaks are of the + variety, i.e. DOM supporting).

> ...
> We've never had problems with such transceivers and DOM, including with 
> SFP+ in a X2->SFP+ converter in a 6716.


Well that in itself is useful to know - thanks.


Michael.

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