[ale] 10G networking

[Jim Kinney]

It all electrical at both ends. The sfp+ adapter takes the electric signal from a bunch of tiny wires and feeds a fiber connection through a laser. The socket for the sfp unit is all copper connections.

The direct copper line plugs in like an sfp but only does a crossover in copper to the other end. Stupidly overpriced cable.

On May 8, 2015 4:07:40 PM EDT, "Lightner, Jeff" <JLightner at dsservices.com> wrote:
>To me it makes sense a cable that somehow converted fibre light to
>copper electrical (or vice versa) would be more expensive than either
>an all copper or all fibre cable because such cables would have to have
>some sort of electronics built in (even if just photoelectric cells) to
>do the signal conversion.
>
>I’ve never seen such a cable though so would be interested in what they
>look like.   Years ago I did see a box that would convert copper rj11
>to fibre (and vice versa).   The purpose of that was for locations that
>had high lightning strikes (e.g. Florida) so one could do distance
>wiring runs not affected by electrical storms.   It probably was worth
>it for such sites.
>
>
>From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Jim
>Kinney
>Sent: Friday, May 08, 2015 3:24 PM
>To: Atlanta Linux Enthusiasts
>Subject: Re: [ale] 10G networking
>
>Those are the direct copper. They have a sfp+ connector on each end and
>cost like they are gold. I've been doing fiber for cheaper. Weird.
>On May 8, 2015 3:01:02 PM EDT, "Beddingfield, Allen"
><allen at ua.edu<mailto:allen at ua.edu>> wrote:
>I know that we have some special copper cables that have SFP+ ends.  We
>are going to Cisco 10GB switches out of Broadcom 57711 cards.  They
>were in range of several hundred $$$ each, but cheaper than the fiber
>option.  I can get the info from our Network team, if that is of any
>use to you?
>
>--
>Allen Beddingfield
>Systems Engineer
>The University of Alabama
>
>
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-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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