+1
On 01/22/2018 10:25 AM, Chuck McCown wrote:
The best isolation is two back to back fiber media converters.
*From:* Jaime Solorza
*Sent:* Monday, January 22, 2018 9:18 AM
*To:* Animal Farm
*Subject:* Re: [AFMUG] Use Unpowered PoE Injector on Long Ethernet Runs?
We use isolators at many well and liftstations to prevent this on
Ethernet and signalling runs. All are grounded.
Jaime Solorza
On Jan 22, 2018 8:54 AM, "Chuck McCown" <[email protected]> wrote:
Not if you break galvanic or capacitive coupling with magnetics.
*From:* Mike Hammett
*Sent:* Monday, January 22, 2018 8:52 AM
*To:* [email protected]
*Subject:* Re: [AFMUG] Use Unpowered PoE Injector on Long Ethernet
Runs?
You will still get differences from the things plugged into the
switches.
Glass, wireless or better ground potential equalization.
-----
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/>
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------------------------------------------------------------------------
*From: *"Christopher Gray" <[email protected]>
*To: *[email protected]
*Sent: *Monday, January 22, 2018 9:17:41 AM
*Subject: *[AFMUG] Use Unpowered PoE Injector on Long Ethernet Runs?
I have a customer with bizarre issues. I've replaced almost
everything but odd issues keep coming back.
The customer has a 100' run of Ethernet cable from the house to
the barn, and a switch in the barn. I'm wondering if there might
be an issue with different power sources, possibly different
grounds between the router and the switch. The issues are
intermittent enough that I can't ask for them to just disconnect
their barn as it is used for work.
If I install an unpowered gigabit PoE injector in-line with that
100' run, will that eliminate any issues with different power or
different grounds between different buildings since the buildings
would be on separate sides of the magnetics, or do I need better
separation?
--
