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SFP vs. SFP+

I'm curious also. Could you use a SFP in a ten gig port if you only need 4gb of throughput?

Sent from my iPhone

On Feb 17, 2011, at 6:25 PM, "Sam Chesluk" <Sam at networkhardware.com> wrote:

> Jason - there are no SFP-10G parts based off of the original SFP; they
> all are based on the SFP+ standard, so there will be no issues with the
> optic not being able to work at the full 10Gbps it's rated for.
> Sam Chesluk 
> Network Hardware Resale
> -----Original Message-----
> From: Jason Lixfeld [mailto:jason at lixfeld.ca] 
> Sent: Thursday, February 17, 2011 3:00 PM
> To: nanog at nanog.org
> Subject: SFP vs. SFP+
> I was asked today what the difference between SFP and SFP+ is.  I did
> really know, so I looked it up and it seems that the SFP spec provides
> capabilities for data rates up to 4.25Gb/s, whereas SFP+ supports up to
> 10Gb/s.  Naturally, this made me wonder whether or not an optic that
> supported 10GbE always conformed to the SFP+ standard inherently, or if
> there are cases where a 10GbE optic might only support the SFP standard,
> thus having a 4.25Gb/s bottleneck.