Subscriber Discussion

Small PoE Switch With 802.3AF Mode A Poe.

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Hal Bennick
•Oct 29, 2015
Trafficware, a CUBIC Company

I need a small switch for my demo kit, but it needs to support 802.3AF Mode A. Mode A sends power down the data wires, Mode B sends it down the unused wires. This comes in to play when you're trying to power an M12 PoE camera with an RJ45 to M12 converter. Any advice?

(1)
U
Undisclosed #1
•Oct 29, 2015
IPVMU Certified

AFAIK, pretty much every 802.3af switch, (not midspan, or injector), uses Mode A these days.*

Is there a particular switch you had in mind?

*edit - added some extra hedging with these days

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Hal Bennick
•Oct 29, 2015
Trafficware, a CUBIC Company
In reply to Undisclosed #1

So far, the two I've bought (Ubiquiti and some doohickey at Altex) don't work. I've heard that Netgear works, but I chatted with Netgear, and they said everything is Mode B. Dell has one, but it's $200 for an 8 Port. I emailed EnGenious, DLink, and CDW, but no one has given me anything super definitive. Linksys said no.

U
Undisclosed #1
•Oct 29, 2015
IPVMU Certified
In reply to Hal Bennick

Ubiquiti has a bunch of 24 v passive, mode b models, like the tough switch. But they shouldn't say 802.3af. They also have their Edge switch which can be configured for either af mode a or passive mode b.

I think that whoever you talked to at Netgear might be confused. They also have some backwards documentation on POE, like this one that reverses mode a and b, beware...

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Hal Bennick
•Oct 29, 2015
Trafficware, a CUBIC Company
In reply to Undisclosed #1

EdgeSwitch looks nice, but not real portable. I'm thinking I'll roll the dice on Netgear. I had luck with them back in the day.

U
Undisclosed #1
•Oct 29, 2015
IPVMU Certified

Here's my Netgear fs108p hooked up to a Poe tester, showing that the Poe is on 1,2,3,6, mode a.

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Hal Bennick
•Oct 30, 2015
Trafficware, a CUBIC Company
In reply to Undisclosed #1

This is some awsome IPVM citizenship. Thanks!

U
Undisclosed #2
•Oct 30, 2015

Not cheap, but the datasheet for this unit specifically lists that it does Mode A power.

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UI
Undisclosed Integrator #3
•Oct 30, 2015

Check these out...Not cheap But you wont have the problems with these that hte UBNT Switches can have...

http://www.netonix.com/wisp-switch.html

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