Ok. I just asked my two automation engineers to explain ground bounce. They never the term. They assumed that voltage is getting injected or introduced into line somewhere. Recommended voltmeter and checking wires first
Jaime Solorza On Mar 31, 2015 11:14 AM, "Forrest Christian (List Account)" < [email protected]> wrote: > Is this a higher RF site? > > I don't remember is the GIGE-APC high voltage? If this is a low voltage > unit, you may be seeing some sort of ground bounce and/or RF triggering the > surge supressor. > > On Tue, Mar 31, 2015 at 10:49 AM, Nate Burke <[email protected]> wrote: > >> I just changed out an ATOM mikrotik to a CCR, and found that it is >> Incrementing FCS Errors exactly every 30 seconds on the Ethernet line from >> a Trango LYNX. The lynx is powered via DC, so the Data line is clean of >> POE. I am using a GIGE-APC Unit on the Ethernet line. >> >> What I found through testing, was that the FCS Errors only happened when >> the GIGE-APC was plugged into the chassis. They happened at exact 30 >> second intervals. Because of this I'm guessing that there is something >> introduced via the ground that is causing them. If I pull the GIGE-APC out >> of the Chassis, the errors stopped, if I plugged it back in, the errors >> came back, at the exact same clock points (in my CCR Log, always at 06 and >> 36 seconds regardless of the timing of plugging/unplugging). I'm using the >> 1U APC chassis, and there are other GIGE-APC, 444APC-HV, and GIGE-POE-APC >> units in it. None of the other equipment is plugged into the CCR, so unsure >> if it would increment FCS Errors on those. They are all plugged into >> RB1100's, and have no errors logged in the mikrotik. >> >> Any place to start troubleshooting something like this? Would it make >> sense that something on the ground plane could cause these Ethernet errors? >> >> I believe that this is causing some very low level packetloss through the >> link, about 1 packet every 5 minutes or so, I'm guessing based on if the >> ping falls directly on the error frame. >> >> Nate >> >> > > > -- > *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* > Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 > [email protected] | http://www.packetflux.com > <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> > <http://twitter.com/@packetflux> > >
