10GB-X2-SR vs 10GB-X2-LRM

Unanswered Question
Jun 4th, 2009

Hello all,

I need some advice between 10GB X2 modules, can you give some information about the SR and LRM model ? What is the most used in building environment ?

What is the best to use ?

the price is not the same.

Thank you

I have this problem too.
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Joseph W. Doherty Thu, 06/04/2009 - 03:53

In brief, the different modules support different distances. More expensive ones support longer distances. (NB: Fiber selection impacts what modules can be used and distance too. Also for very short distances there's special copper modules. Lastly, I recall, sometimes not all switches support all modules.)

What's best to use is often what meets your distance/media requirements at the least cost.

See http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6574/product_data_sheet0900aecd801f92aa_ps5251_Products_Data_Sheet.html for more info.

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