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

[Joseph Mack NA3T]

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
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