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Karthik_Kumaran's avatar
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Mar 16, 2016

Differentiation Copper and Fiber SFP

Is there a command to verify if a particular interface has a copper or fiber SFP? The "show net interface all" shows the Media type, but how to identify if it is a copper or a fiber connection?


For example If media type is 1000T-FD - Does the 'T' refer to copper? If media type is 10000SR-FD - Does the 'SR' refer to fiber multimode?


Is this interpretation right?


1 Reply

  • The letters actually refer to the IEEE standard - you can find a list here for 10GB, and here for 1gbps.


    10000SR is 'short range' multi mode fibre, and 1000T is twisted pair.


    For completeness, "FD" refers to Full Duplex.