[c-nsp] DC PoE Switch Recommendations

[Mike Hammett]

Given the lack of AC in the telco room, I was looking for easier ways than generating my own AC to power a few devices, but maybe that'll be a reasonable course of action. 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

----- Original Message -----

From: "Patrick Marc Preuß" <patrick.preuss at gmail.com> 
To: "Shawn L" <shawn at rmrf.us> 
Cc: "Mike Hammett" <cisco-nsp at ics-il.net>, "Cisco Network Service Providers" <cisco-nsp at puck.nether.net> 
Sent: Wednesday, August 4, 2021 1:06:29 PM 
Subject: Re: [c-nsp] DC PoE Switch Recommendations 


Hm a little unusual combination ;-) 

PoE usually is some sort of enterprise line Feature and dc input is more on the Telkom side of things, most data centers I know had two circuits of 3 phase ac. 

But anyway Did you have thought about using normal ac powersupplies and on the dc side using a dc / ac inverter? 

Something like: 
RS Pro 1000W Fixed Installation DC-AC Power Inverter Pure sine, 48V dc / 230V ac 
They are sold around 350 Euro here in Europe. 


> Am 04.08.2021 um 14:28 schrieb Shawn L <shawn at rmrf.us>: 
> 
> If you're looking for new equipment, what about a 3850 series switch? 
> They're getting close to the end-of-sale from Cisco, but will still be 
> supported for quite a while. 
> 
> If you're looking at used equipment, it can be tough to find DC power 
> supplies. I have a couple of (reputable) larger suppliers that we use that 
> can usually find them. 
> 
> Shawn 
> 
>> On Tue, Aug 3, 2021 at 6:55 PM Mike Hammett <cisco-nsp at ics-il.net> wrote: 
>> 
>> I'm looking for recommendations on some used Cisco PoE switches. 
>> Requirements are that they take -48 vDC power and have PoE output. They'd 
>> mostly be managing OOBM, but they'd also power an IP phone, a couple of 
>> cameras, and an AP. 
>> 
>> 
>> I was looking at the 3750X, which is available at a very reasonable price, 
>> but the power supplies are like $2k/each, which is not very reasonable. 
>> 
>> 
>> 
>> 
>> ----- 
>> Mike Hammett 
>> Intelligent Computing Solutions 
>> 
>> Midwest Internet Exchange 
>> 
>> The Brothers WISP 
>> 
>> _______________________________________________ 
>> cisco-nsp mailing list cisco-nsp at puck.nether.net 
>> https://puck.nether.net/mailman/listinfo/cisco-nsp 
>> archive at http://puck.nether.net/pipermail/cisco-nsp/ 
>> 
> _______________________________________________ 
> cisco-nsp mailing list cisco-nsp at puck.nether.net 
> https://puck.nether.net/mailman/listinfo/cisco-nsp 
> archive at http://puck.nether.net/pipermail/cisco-nsp/