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upsOnBattery MIB

Fellow Thwackerians --

We'd like to set up an alert that will notify us when a UPS switches to battery power. Most of our UPS devices are APC, in PowerNet-MIB there appears to be a solution, upsOnBattery OID 1.3.6.1.4.1.318.5. But we're having trouble with it. When testing, a couple times it's worked correctly, but usually the test fails with error messages 'No Such Name' or 'OID not supported'.

I'm wondering if (1) anyone else has seen, and maybe solved, this problem; (2) how can I tell if the Universal Device Poller MIB database has the latest PowerNet-MIB; and (3) if there is some other way to throw an alert when a UPS device loses commercial power and switches to battery.

Thanks,
Brent

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lyntoolman

Fought this battle not too long ago. Near as I can tell, that MIB works on older units. I finally had success with 1.3.6.1.4.1.318.1.1.1.3.2.1 Also, watch your poll time. The system standard is too long to react to any intermittant loss. That MIB is current line voltage, need to set-up to alert when voltage is below 117 or so.

BrentPapworth

Great suggestion, should do the trick. Thanks!

kweise

Brent,

We've only got one APC UPS that we monitor (most of ours are Lieberts). On the one APC we have, there is a MIB for upsBasicBatteryTimeOnBattery that we monitor. OID: 1.3.6.1.4.1.318.1.1.1.2.1.2. Description: The elapsed time since the UPS has switched to battery power. Anything other than 0 would indicate the UPS is on battery power.

BrentPapworth

Excellent! We implemented the voltage input MIB yesterday, as per lyntoolman's suggestion. However, the time on battery MIB may be useful to us as well. We have a bunch of APC UPSs, and we really need to do a better job managing them. Thanks kweise!

lyntoolman

As I mentioned, about six months ago, I got immersed in our APC ups. Living with a geographically diverse network on the Gulf Coast, one learns to think back-up early and often. While that time on battery MIB yields results, variance in load and battery age result in a wide range of run time. In the interest of accuracy, you would need alerts individualized for each unit….and maintain then as things change and age I think there’s also a time left on battery MIB. However it has the same limitations mentioned above.

BrentPapworth

I know exactly what you're talking about. Under the pressure of events we've dropped the ball on UPS maintenance and now (after a couple of ugly and unnecessary outages) we're looking to get them back in shape. We're running a number of APC MIBs, but we're cautious regarding their accuracy. We see some definite contradictions among the MIBs. We'll probably implement the 'time on battery' MIB, but be careful with the result.

lyntoolman

Brent, I just looked at the APC page you have on line. You're several firmware updates behind. Again, been there, done that. The new interface is smoother, more complete and HTML to boot. The only caviat is that when bringing forward the management cards, it took as many as three attempts. With no pattern reguarding which one went clean and which one hung-up.

Butch_Snyder

We're trying to do the same thing. How do you set the value from 119 to 117, etc...?