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networkupstools / nut

The Network UPS Tools repository. UPS management protocol Informational RFC 9271 published by IETF at https://www.rfc-editor.org/info/rfc9271 Please star NUT on GitHub, this helps with sponsorships!
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Tripplite SNMPWEBCARD ups.load 10 times too high #341

Open toolage opened 7 years ago

toolage commented 7 years ago

I am running 2.7.4 using the snmp-ups. The value reported by ups.load is 10 times higher than the actual amount. Currently it is showing 160% when it is actually only 16%

Tripp-Lite SNMPWEBCARD running version 12.06.0064.2791.2532 Device is a Tripp-Lite SU2200RTXL2Ua UPS.

toolage commented 7 years ago

battery.charge 100.00 battery.runtime 3300.00 battery.temperature 32.00 battery.voltage 56.00 device.mfr Tripp Lite device.model SU2200RTXL2Ua device.type ups driver.name snmp-ups driver.parameter.mibs ietf driver.parameter.pollfreq 15 driver.parameter.pollinterval 2 driver.parameter.port x.x.x.x driver.parameter.snmp_version v2c driver.parameter.synchronous no driver.version 2.7.4 driver.version.data ietf MIB 1.5 driver.version.internal 0.97 input.bypass.frequency 59.90 input.bypass.phases 1.00 input.bypass.voltage 124.00 input.frequency 59.90 input.phases 1.00 input.transfer.high 150.00 input.transfer.low 65.00 input.voltage 124.00 input.voltage.nominal 120.00 output.current 0.20 output.frequency 59.90 output.phases 1.00 output.realpower 253.00 output.voltage 124.00 ups.beeper.status muted ups.firmware 19 ups.firmware.aux 12.06.0064 ups.load 150.00 (this value should show as 15% load) ups.mfr Tripp Lite ups.model SU2200RTXL2Ua ups.status OL

clepple commented 7 years ago

The IETF MIB RFC seems to indicate that the units should be 1% rather than 0.1%. I saw what looks to be a newer SNMPWEBCARD firmware when doing a quick Google search, but I didn't check for a changelog to see if this has been fixed. I don't have any experience with these cards, so check around to see if there are any gotchas if you upgrade (losing other functionality; not being able to downgrade; etc.)

Also, if you just want to fix it locally, you can change the 1.0 scale factor in drivers/snmp-ups.c to 0.1: https://github.com/networkupstools/nut/blob/v2.7.4/drivers/ietf-mib.c#L174

jimklimov commented 2 years ago

HCL/DDL part of the issue was handled with https://github.com/networkupstools/nut-ddl/pull/21 and #1396

Special handling for 10x the load I think was not done, at least not in IETF MIB