I'd imagine you'd be fine if you just turn poe-out off on all the ports. On Mon, Jun 25, 2018 at 2:38 PM, Mike Hammett <af...@ics-il.net> wrote:
> I got hEX PoE because they didn't have any hEX S. Now that I figure out > that hEX PoE won't work right, they have hEX S in stock. The hEX S has two > ports that aren't PoE in or out. > > *sigh* > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *"Mike Hammett" <af...@ics-il.net> > *To: *"AnimalFarm Microwave Users Group" <af@af.afmug.com> > *Sent: *Monday, June 25, 2018 10:17:07 AM > > *Subject: *Re: [AFMUG] Fw: -48 vDC to 48 vDC > > Ugh. This device is capable of sending PoE. > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *ch...@wbmfg.com > *To: *"AnimalFarm Microwave Users Group" <af@af.afmug.com> > *Sent: *Monday, June 25, 2018 10:15:54 AM > *Subject: *Re: [AFMUG] Fw: -48 vDC to 48 vDC > > No, all ethernet conductors hit a transformer inside the device. Called > phy magnetics. That gives you an electrical isolation between the ethernet > circuit and the rest of the unit – unless – it is capable of receiving POE > over that jack. In that case there is a connection. > > *From:* Mike Hammett > *Sent:* Monday, June 25, 2018 9:10 AM > *To:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] Fw: -48 vDC to 48 vDC > > Oh, okay, so no concern that some of the Ethernet pins have continuity to > negative\ground when I've reversed the polarity coming in to compensate for > using a +48 device in a -48 environment? > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *ch...@wbmfg.com > *To: *"AnimalFarm Microwave Users Group" <af@af.afmug.com> > *Sent: *Monday, June 25, 2018 10:04:12 AM > *Subject: *Re: [AFMUG] Fw: -48 vDC to 48 vDC > > If you will not be using shielded cables and the plastic case insulates > the board ground from the environment, you should be good to go. > > *From:* Mike Hammett > *Sent:* Monday, June 25, 2018 8:38 AM > *To:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] Fw: -48 vDC to 48 vDC > > Oddly enough, I don't have continuity from the shield around the Ethernet > connectors to anything, but the USB and SFP cages as well as the metal > around the mounting holes (which do nothing on a plastic case with plastic > standoffs) carry through to the outside of the DC jack. > > I can check what has voltage when I'm back to where I actually have one > plugged in. > > Now, I won't be using shielded cable, just standard cat 5. I don't know > what type of isolation there is from standard Ethernet to the > negative\ground. I just checked and the solder points on the bottom of the > board (eight of them for each Ethernet) do indeed go to negative\ground. > Sounds like that idea is out until I can get +48 to the router. > > I can make do by stacking VLANs on the SFP and using the DSLAM or switch > to move the traffic around, but having one port for east and one for west > would be nice. > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *ch...@wbmfg.com > *To: *"AnimalFarm Microwave Users Group" <af@af.afmug.com> > *Sent: *Monday, June 25, 2018 9:12:04 AM > *Subject: *Re: [AFMUG] Fw: -48 vDC to 48 vDC > > Yes, the shields around the ethernet jacks. I presume they have a little > metal tab that would engage with a shielded plug if inserted. > I think the USB shield should be connected to internal ground as well. > > *From:* Mike Hammett > *Sent:* Monday, June 25, 2018 8:06 AM > *To:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] Fw: -48 vDC to 48 vDC > > When you say chassis, I assume the case, but this is a plastic case, so > something inside? > > https://mikrotik.com/product/RB960PGS > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *ch...@wbmfg.com > *To: *af@af.afmug.com > *Sent: *Monday, June 25, 2018 8:44:01 AM > *Subject: *[AFMUG] Fw: -48 vDC to 48 vDC > > Hard to answer. Power up the MT with it resting on something that is not > conductive. > > Measure from both sides of the incoming power to the chassis and ethernet > shield connection. > If there is no voltage between chassis and shield and either side of the > power input it is probably a floating load. > If it is a floating load you can hook it up to any source of 48 volts. > > However, if you measure a voltage from chassis to the positive input, then > it is a negative ground load and will short out a –48 input. > > *From:* Mike Hammett > *Sent:* Monday, June 25, 2018 7:27 AM > *To:* AF > *Subject:* -48 vDC to 48 vDC > > I have a Mikrotik hEX PoE plugged into a telco -48 vDC plant by reversing > the polarity of the power wires. > > Should I expect a cat 5 connection between the router and the DSLAM to > cause issues? > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > ------------------------------ > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > ------------------------------ > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > ------------------------------ > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > >
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