We have an APC Symmetra LX 16000, which we're monitoringwith an open source package (Network UPS Tools, aka 'nut').I understand that APC probably doesn't support this package,but I don't think my issue has anything to do with themonitoring software, so I've decided to seek help here.This software supports SNMP communication with our UPS (aswell as many others), so we're using SNMP to monitorthe UPS remotely.So far, we're able to connect to the UPS and gather information (ups.status, output.L1.current, etc.), andwe're getting correct results.The problem we're having is that when the UPS loosesutility power (by way of us throwing the disconnectswitch that feeds it), we're not getting the expectedONBATT event that the UPS should send when polled bythe monitoring software.Instead, the UPS (or perhaps more accurately, the SNMP card) appears to go completely offline, and the software reports a COMMBAD event, indicating that the UPS is no longer respondingto polling requests.So our question is, is it possible that the SNMP cardno longer communicates when the UPS is on battery?(which would seem highly unlikely...)Thanks in advance for any assistance.
The network card (NMC) should continue communicating -- to verify this, try accessing the NMC's web page. If you can't, plug a laptop into the same hub/switch as the NMC and try again. Make sure the network equipment is on battery backup so it doesn't lose power.
hi voidstar - thanks so much for your quick response. we agree, and can't see any reason why the NMC should stop operating during an outage. we also thought of refreshing the nmc's web page during the test, and it seemed to respond normally. we're going to try to approach this from the software side of things. will report back any findings. thanks again. rm.
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