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SFP vs. SFP+

On 18/02/2011 05:55, Peter Nowak wrote:
> You can plug SFP module (copper or fiber) into any SFP+ port.
> So, on 10G port you can run either 1GE or 10GE.

A well known counterexample of this is the Cisco Nexus5k, where only some 
of the SFP+ ports are 1G capable (first 8 on the 20 port box, and the first 
16 on the 40 port box).