[mesh-talk] DIO Gigabit PoE

Marc Juul juul at labitat.dk
Mon Jun 22 03:27:30 PDT 2015


At Omni we're using TP-Link dual-band home routers (N750) and modifying
them for PoE.

These routers have gigabit ethernet.

Unfortunately gigabit ethernet and PoE at the same requires special
ethernet transformers and these routers don't have that type of transformer.

This means that they drop to 100 mbit when we modify them for PoE (but only
on the port we modify).

I was looking into how to get around this problem.

I thought maybe there was a way to do gigabit half-duplex on two or three
pairs, but it seems like that's not possible.

BUT! It looks like TP-Link makes a PoE splitter which can apparently handle
gigabit:

  The TL-POE10R

Here it is for $12:


http://www.ebay.com/itm/TP-LINK-TL-POE10R-Gigabit-PoE-Splitter-Adapter-IEEE-802-3af-compliant-5V-12V-/321785705485?pt=LH_DefaultDomain_0&hash=item4aebec340d

I ordered one so we can try it out. If it works we should just do that to
all of the routers. No reason not to have gigabit if it's only $12 extra
per router. It's still only $77 total for router + PoE splitter.

oh and btw, someone is selling dirt cheap Ubiquiti Unifi UAP devices:


http://www.ebay.com/itm/New-Ubiquiti-UniFi-UAP-802-11n-300-Mbps-Wireless-Access-Point-with-POE-Injector-/151717353879?pt=LH_DefaultDomain_0&hash=item23530f1997

Caution: They are 2.4 GHz only.

I ordered one for the mesh, just so we have it to test our firmware on.

-- 
marc/juul
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