I wish the Mikrotik CSR series had that. But it can handle PoE in on port one and DC in simultaneously.
So if possible on MDU I plug in DC power locally and also set the customer on port one up with PoE so I have redundancy. I usually give the customer a UPS as well, so that’s how I do battery backup, over the PoE instead of in the NID. My preference would still be that every port accept PoE so I just give a PoE to every customer and if any leave or have no power it’s still on. And advise the customers to use UPS, hoping that statistically one of them does have one, lol! From: Af [mailto:af-boun...@afmug.com] On Behalf Of Nate Burke Sent: Tuesday, December 22, 2015 2:47 PM To: af@afmug.com Subject: Re: [AFMUG] Switch powered by PoE IN on any port You could use chuck's GIGE-POE devices on every line to pull the DC off the Ethernet line, then just run it into something to condition the power so you don't overvoltage anything. Then just power the switch via DC. If any 1 Ethernet line would have DC On it, then you could power the switch. On 12/22/2015 3:42 PM, Mathew Howard wrote: I used to modify cheap switches to do passive PoE, which would work that way... I just had pins 4/5 & 7/8 on all the ports hard wired to the DC jack, so essentially all the ports were PoE in and out. It's pretty simple on 10/100 stuff... of course gigabit would make it a lot more complicated. But I've never seen anything built to do that. On Tue, Dec 22, 2015 at 3:27 PM, Adam Moffett <dmmoff...@gmail.com<mailto:dmmoff...@gmail.com>> wrote: Understood. I want PoE IN on all/any port. On 12/22/2015 4:18 PM, Josh Reynolds wrote: Ubiquiti, Mikrotik, and Netonix have several designs for routing and switching that can be powered over POE in and sent 1 or more ports of POE out. On Dec 22, 2015 3:16 PM, "Adam Moffett" <dmmoff...@gmail.com<mailto:dmmoff...@gmail.com>> wrote: I was thinking about Dish Network MDU setups. The switch they use gets power from the set top boxes via the coax cables. As long as any one of the set top boxes in the building is turned on, then the switch has power. I was curious if there's an ethernet switch with a similar capability. I've got a place where I'd like to put a managed switch, but it would be easier and cheaper to supply a few PoE injectors than to install an outlet. Anybody heard of such a beast, or am I hunting the white whale?
