On 16 Aug 2013, at 21:48, Ben King <[email protected]> wrote:

> Anyway come the install they deploy SM with LX SFPs, the link between
> the sites is up the link light is on on their end of the LX link to us
> but our end won't light - we are terminating into a 6500 SUP720-3B at
> each end.

Sounds like 1000Base-X autoneg. try toggling 'speed nonegotiate' / 'no speed 
nonegotiate'

> VM are now trying to argue that it's because it's too close, ie below
> LX minima link (2m patch lead). However we know their optics light
> when in our kit and while I know it's a bit short and ultimately it's
> probably shortening the life of the optics but fundamentally I think
> it should work.


Realistically there is no minimum distance for 1000LX, and you can sit there 
running with a 2m patch lead until the cows come home. Reference a BT Sinet 
document maybe? ;-)

-- 
Will Hargrave
+44 114 303 4444




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