[TriLUG] OT: PoE injector/splitter - recommendations?

[Len Boyle]

This grop is going to have a talk on this subject in July.

Future Meetings

July 1st, 2008 - FCoE, Fibre Channel over Ethernet. This new SAN transport is currently being added to OpenSolaris. We'll have a technical presentation and possibly a demo of the new FCoE leadville initiator.

Additional details coming soon. Stay tuned...


http://opensolaris.org/os/project/rtp-osug/

-----Original Message-----
From: trilug-bounces at trilug.org [mailto:trilug-bounces at trilug.org] On Behalf Of Joseph Mack NA3T
Sent: Friday, May 16, 2008 11:52 AM
To: Triangle Linux Users Group General Discussion
Subject: Re: [TriLUG] OT: PoE injector/splitter - recommendations?

On Tue, 13 May 2008, Heath Roberts wrote:

Thanks David and Heath

> I don't think it's any more expensive than buying six
> injectors at $40, plus you won't have 6 wall warts (and
> would still have the existing ports free).

my initial searches found only expensive PSEs, so I'd not
gone down this path. After David's pointers, this option
looks a lot better. I found the SLM2008 with 8 ports of POE
for about $100 (most PSEs seem to have only a limited number
of ports with PoE).

Next I found an adapter, a DWL-P50 with both 12V and 5V for
about $40. Presumably I have to make up my own double ended
12V/5V cable to get the power from the PoE adapter to the
WAP.

Then I found that you have to be running 802.3af

http://www.altair.org/labnotes_POE.html

as it turns out both these devices comply.

This is a lot cheaper than I first thought

> You can find consumer-priced access points that have PoE
> built in, as well.

Any suggestions? Having to put a splitter in-line is a pain.
I have a bunch of wall-wart dependant WRT54G??s running
DD-WRT which I've customized and are running quite nicely at
the moment. I'd be loathe to ditch them unless I could get
the equivalent functionality (ie running DD-WRT) in the PoE
enabled device.

> We use a quite a bit of PoE at work for wireless access
> points and IP phones, and as far as I know we've never had
> any lightning-induced issues. I don't think this would be
> any different with PoE than without.

good to have an opinion here. I take it that you've survived
a summer or two with your setup? I don't want to get a phone
call after a thunderstorm telling me that all devices are
dead.

Thanks

Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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Homepage http://www.austintek.com/ It's GNU/Linux!
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