[f-nsp] 10G-XFP-LR optics used on short links

[Niels Bakker]

* helmwork at ruraltel.net (Eric Helm) [Sat 22 Nov 2008, 05:24 CET]:
> Hello, I'm working some XMR routers that only have 10G-XFP-LR optics 
> available. There is one short link connecting to XMR routers of around 
> 3 meters. Should an attenuator be used on these links? I've looked at 
> the output of 'show optics' and the XFPs are operating within a normal 
> range. I'm concerned that some damage may occur to the XFPs in this 
> case.

LR was designed to work without attenuators.

Please don't fearmonger.  We're talking run-off-the-mill standard optics 
here so the saturation point for the receiver is far removed from the 
damage point.  The only damage that can occur is if you drop them or 
cough into them.


	-- Niels.

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