[c-nsp] Question about FX connections

[Michael Smith]

Hello Jeff:

If the run is SMF there is no way you're going to get signal from the  
PA-2FE-FX which is, as you say, uses multimode optics.  Over short  
distances you can (your mileage may vary wildly) run singlemode  
optics over a multimode fiber, but never the reverse.

So, unless your provider and you both have SMF optics, this isn't  
going to work.  Here's the data sheet on the PA-2FE-FX adapter  
verifying the multimode laser configuration.

http://www.cisco.com/en/US/customer/products/hw/modules/ps2033/ 
products_data_sheet09186a0080091c92.html

Hope that helps.

Mike

On Jul 6, 2005, at 4:58 AM, Jeff Crowe wrote:

> Hi,
>
> I am having a 100base FX connection setup between a supplier and  
> myself and
> have a couple of question.  The connection will be sent to us from  
> a 7200
> with a PA-2FE-FX (they specified this card).  From my reading, the  
> PA-2FE-FX
> only supports MMF, not SMF which the run is. The distance is about  
> 1 - 1.5km
> from end to end.
>
> Am I going to run into problems with this?  If there are no  
> problems, can I
> use a WS-X5201R in a 5500 card on my side to terminate the connection?
>
> Thanks,
>
> Jeff.
>
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