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The Small Form-factor Pluggable is a transceiver module for gigabit-range connections, mostly optical (up to 2.5 Gbit/s). It is also called mini-GBIC sometimes. SFP+ modules may support up to 16 Gbit/s.

4
votes
SFP+ modules leave more circuitry to be implemented on the host board whereas XFP or XENPACK implemented those circuitries inside the module. Normally, you don't have to know that because you just … plug the correct device in the corresponding hole SFP+ are a little smaller, and the module can be backward compatible with 1G SFP (if device allow it, which is not so often the case …
answered Oct 5 '17 by Golgot
0
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You SFP has to be Cisco tagged. Please note that some SFP supplier can provide a programmer to retag SFP on the fly. We used this a lot, this is very convenient for spare management when you used … mixed devices brands/models. Now we have lots of spare for every devices... We use a specific programmer from a specific SFP vendor, but there is also generic solutions and DIY solutions (search SFP programmer on google) …
answered Aug 1 '18 by Golgot