RE: VERY OT: POE over SFP module

I agree with Andrew here as well. I think someone earlier mentioned that the 1250 needed the power supply near the actual AP, I don't think that is true. We built a little metal rig to house 15 power blocks and ran them all at the patch panel with distances around 270' and haven't had any performance or power issues. It was fairly ugly though, a 3560E/3750E is a better call at that point or maybe the 1140's.

-ryan

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of ALL From_NJ
Sent: Monday, July 13, 2009 7:17 AM
To: Pavel Bykov
Cc: Dennis Worth; <ccielab_at_groupstudy.com> <ccielab_at_groupstudy.com>
Subject: Re: VERY OT: POE over SFP module

(just saw Ryan's email ... but I wrote this a few minutes earlier ... good
update Ryan)

Hey Pavel and team,

Just to add in a little bit more here ...

1140n uses standard POE ... wireless N, without the need for enhanced. This
is a nice AP with multiple radios etc ...
http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10092/datasheet_c78-502793.html

The 1250 series power will depend on the number of radios you have
installed. W/ one radio, N radio, you may be fine with standard POE as it
will come just under the 15 watts limit ... this will not allow you to have
a G radio at the same time though ... and there would be no interop between
the two.

Still suggested to use ePOE. A power injector is a cheap method if only
doing one AP or so ... too many more than 1 AP makes the power injectors an
operational cost / headache. Best to go with the ePOE as Pavel mentions ...

On Mon, Jul 13, 2009 at 9:39 AM, Pavel Bykov <slidersv_at_gmail.com> wrote:

> 1. No, normally PoE SFP's are not sold
> 2. N-radios usually need too much power, and current PoE is not able to
> deliver it. Try looking for ePoE (enhanced PoE) - cisco proprietary tech
> for
> N-radios
>
> On Fri, Jul 10, 2009 at 8:39 PM, Dennis Worth <dennis.worth_at_gmail.com
> >wrote:
>
> > Hey group,
> > Has any come across an SFP module able to run POE for a 3560 10/100 POE
> > switch? I thought I read you could do this, but it must be another switch
> > brand.
> >
> > Thanks,
> >
> > --
> > Dennis Worth
> >
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-- 
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net