AP8653 Power Reading

[Anonymous user]

Hello

I have created a graph in Cacti for reading power consumption (watts) on AP8653. The OID is .1.3.6.1.4.1.318.1.1.26.9.4.3.1.11.9 (outlet 9). I noticed that the graph is not consistent and has some zero values. Polling interval is 5 minutes. When I do snmpwalk on the device, I sometimes get zero value as well. Has anybody else had the same problem?

Thanks

Cem Nergiz

[BillP · Accepted solution]

Thanks!

I think what is happening here is what is explained in this article -> How accurate is the current monitor on an APC Rack PDU (AP7XXX or AP8XXX)? | FAQs | Schneider Electr...

Refer to this section:

rpdu2g firmware v5.1.2, v5.1.6:

• Phase/Bank/Outlet Current - squelched to 0A under 0.5A.
• Device/Phase/Outlet Power - squelched to 0 watts if corresponding current is squelched.
• Outlet Energy - Will NOT be accumulated if corresponding outlet power/current is squelched.
• Device Energy - Will always accumulate, since the unit does consume a very small amount of energy within the internal circuitry.

I think this is what is going on because it looks like when you are getting a reading, it is at 0.6A and it might be squelching if the power consumption drops below 0.5A, thus that outlet's energy is not accumulated if the A reading is squelched.

In v6 firmware, we changed the squelch which might be beneficial for you since you'll get readings all the way down to 0.3A, rather than only to 0.5A. We only claim accuracy, as stated in the article though, down to 0.5A.

So, you could upgrade your firmware if you wanted to? It is a major firmware upgrade though with lots of changes, a new web UI, etc. If you choose to upgrade, which would be AOS 6.1.3/rpdu2g v6.0.9, I'd suggest just reading through this -> Things To Consider When Upgrading or Downgrading a Network Management Card 2 (NMC2) Device between v...

If you need 0.3A accuracy but really do not want to upgrade to rpdu2g v6.0.9 for a specific reason, let me know and we can explore another option.

[Anonymous user]

Hi Angela

I have upgraded the firmware successfully and now monitoring readings. I will let you know the result tomorrow.

Thanks

Cem Nergiz

[Anonymous user]

Hi Angela

I would like t confirm that the readings are perfectly fine after the firmware upgrade.

Thank you very much for your swift responses and kind help.

Kind Regards

Cem Nergiz

[BillP]

You're very welcome!

[Anonymous user]

Hi Angela,

I have the same trouble after upgrade firmware to rpdu2g v6.1.0 , what can I do? downgrade the firmware to rpdu2g v6.0.9 or any other options?

Please help.

Thank you very much

Candra

[BillP]

Hi Candra,

Can you clarify your specific scenario? Customers complained that they could not see low load values. Thus, low loads should show better in v6.1.0 firmware. In this thread, the user upgraded so that they could take advantage of the lower squelching value so an upgrade should not cause any problems, only fix if we're talking about the same topic in this thread.

[Anonymous user]

Hello

I have created a graph in Cacti for reading power consumption (watts) on AP8653. The OID is .1.3.6.1.4.1.318.1.1.26.9.4.3.1.11.9 (outlet 9). I noticed that the graph is not consistent and has some zero values. Polling interval is 5 minutes. When I do snmpwalk on the device, I sometimes get zero value as well. Has anybody else had the same problem?

Thanks

Cem Nergiz

[BillP]

I have not seen this before but I have some questions to get us started.

• What is the typical value this outlet provides/reads?
• Can you provide a sample output of what you're seeing over time?
• Is it only this one outlet you see this behavior on? What does the data log internal to the PDU report around these same times?
• What firmware is on the Rack PDU?

[Anonymous user]

Hi Angela

• The outlet read between 65-70 watts generally
• Here are sample values read:-

Date	Watts
01/06/2014 14:55	58.06666667
01/06/2014 15:00	65.9
01/06/2014 15:05	66
01/06/2014 15:10	7.04
01/06/2014 15:15	57.63333333
01/06/2014 15:20	64.09666667
01/06/2014 15:25	63.1
01/06/2014 15:30	65.68
01/06/2014 15:35	68.67
01/06/2014 15:40	6.9
01/06/2014 15:45	0
01/06/2014 15:50	0
01/06/2014 15:55	0
01/06/2014 16:00	58.5
01/06/2014 16:05	68.6
01/06/2014 16:10	67.21333333
01/06/2014 16:15	7.37
01/06/2014 16:20	0
01/06/2014 16:25	0
01/06/2014 16:30	0
01/06/2014 16:35	0
01/06/2014 16:40	59.4
01/06/2014 16:45	66.89666667
01/06/2014 16:50	66.10666667
01/06/2014 16:55	64.21333333
01/06/2014 17:00	6.826666667
01/06/2014 17:05	0
01/06/2014 17:10	58.06666667
01/06/2014 17:15	7.366666667
01/06/2014 17:20	0
01/06/2014 17:25	0
01/06/2014 17:30	58.06666667
01/06/2014 17:35	7.366666667
01/06/2014 17:40	0
01/06/2014 17:45	0
01/06/2014 17:50	58.96
01/06/2014 17:55	7.04
01/06/2014 18:00	63.84
01/06/2014 18:05	7.68
01/06/2014 18:10	58.96
01/06/2014 18:15	65.11333333
01/06/2014 18:20	7.366666667
01/06/2014 18:25	0
01/06/2014 18:30	57.17333333
01/06/2014 18:35	7.253333333
01/06/2014 18:40	59.18
01/06/2014 18:45	66.89666667
01/06/2014 18:50	7.146666667
01/06/2014 18:55	59.40666667
01/06/2014 19:00	66.1
01/06/2014 19:05	66
01/06/2014 19:10	65.11
01/06/2014 19:15	7.366666667
01/06/2014 19:20	0
01/06/2014 19:25	58.28333333
01/06/2014 19:30	6.933333333
01/06/2014 19:35	0
01/06/2014 19:40	0
01/06/2014 19:45	58.96
01/06/2014 19:50	7.26
01/06/2014 19:55	58.52
01/06/2014 20:00	66.9
01/06/2014 20:05	64.32
01/06/2014 20:10	65.78666667
01/06/2014 20:15	65.11333333
01/06/2014 20:20	65.9
01/06/2014 20:25	66
01/06/2014 20:30	65.11
01/06/2014 20:35	7.366666667
01/06/2014 20:40	57.38666667
01/06/2014 20:45	64.89333333
01/06/2014 20:50	65.89333333
01/06/2014 20:55	67.77333333
01/06/2014 21:00	64.4
01/06/2014 21:05	66.68
01/06/2014 21:10	7.146666667
01/06/2014 21:15	60.3
01/06/2014 21:20	6.923333333
01/06/2014 21:25	0
01/06/2014 21:30	56.74666667
01/06/2014 21:35	64.9
01/06/2014 21:40	65
01/06/2014 21:45	64.10666667
01/06/2014 21:50	64.89
01/06/2014 21:55	7.366666667
01/06/2014 22:00	0
01/06/2014 22:05	57.17333333
01/06/2014 22:10	6.826666667
01/06/2014 22:15	0
01/06/2014 22:20	0
01/06/2014 22:25	0
01/06/2014 22:30	0
01/06/2014 22:35	60.06666667
01/06/2014 22:40	7.026666667
01/06/2014 22:45	57.17333333
01/06/2014 22:50	7.04
01/06/2014 22:55	0
01/06/2014 23:00	56.49
01/06/2014 23:05	65.69
01/06/2014 23:10	7.26
01/06/2014 23:15	0
01/06/2014 23:20	0
01/06/2014 23:25	0
01/06/2014 23:30	58.52
01/06/2014 23:35	66
01/06/2014 23:40	64.21333333
01/06/2014 23:45	6.826666667
01/06/2014 23:50	0
01/06/2014 23:55	55.86
02/06/2014 00:00	6.51
02/06/2014 00:05	61.41
02/06/2014 00:10	65.45333333
02/06/2014 00:15	7.366666667
02/06/2014 00:20	60.97333333
02/06/2014 00:25	7.253333333
02/06/2014 00:30	0
02/06/2014 00:35	58.28333333
02/06/2014 00:40	64.10666667
02/06/2014 00:45	64.89
02/06/2014 00:50	6.283333333
02/06/2014 00:55	60.52333333
02/06/2014 01:00	64.31
02/06/2014 01:05	65.78666667
02/06/2014 01:10	66
02/06/2014 01:15	6.38
02/06/2014 01:20	60.97333333
02/06/2014 01:25	66.21333333
02/06/2014 01:30	7.26
02/06/2014 01:35	0
02/06/2014 01:40	0
02/06/2014 01:45	0
02/06/2014 01:50	0
02/06/2014 01:55	57.81333333
02/06/2014 02:00	6.613333333
02/06/2014 02:05	0
02/06/2014 02:10	59.4
02/06/2014 02:15	6.6
02/06/2014 02:20	59.18
02/06/2014 02:25	7.04
02/06/2014 02:30	62.1
02/06/2014 02:35	6.67
02/06/2014 02:40	0
02/06/2014 02:45	0
02/06/2014 02:50	57.63333333
02/06/2014 02:55	6.5
02/06/2014 03:00	0
02/06/2014 03:05	0
02/06/2014 03:10	57.81333333
02/06/2014 03:15	65.8
02/06/2014 03:20	6.82
02/06/2014 03:25	0
02/06/2014 03:30	59.4
02/06/2014 03:35	66.90333333
02/06/2014 03:40	6.923333333
02/06/2014 03:45	58.96
02/06/2014 03:50	6.38
02/06/2014 03:55	60.3
02/06/2014 04:00	67
02/06/2014 04:05	65.21333333
02/06/2014 04:10	6.5
02/06/2014 04:15	0
02/06/2014 04:20	0
02/06/2014 04:25	59.85333333
02/06/2014 04:30	67
02/06/2014 04:35	66.1
02/06/2014 04:40	6.82
02/06/2014 04:45	59.62
02/06/2014 04:50	66.9
02/06/2014 04:55	6.7
02/06/2014 05:00	58.06666667
02/06/2014 05:05	65
02/06/2014 05:10	66.80666667
02/06/2014 05:15	6.7
02/06/2014 05:20	0
02/06/2014 05:25	58.71666667
02/06/2014 05:30	65
02/06/2014 05:35	65.9
02/06/2014 05:40	7.04
02/06/2014 05:45	0
02/06/2014 05:50	0
02/06/2014 05:55	59.4
02/06/2014 06:00	6.6
02/06/2014 06:05	54.9
02/06/2014 06:10	5.896666667
02/06/2014 06:15	0
02/06/2014 06:20	59.85333333
02/06/2014 06:25	66.09666667
02/06/2014 06:30	6.16
02/06/2014 06:35	0
02/06/2014 06:40	58.96
02/06/2014 06:45	6.38
02/06/2014 06:50	0
02/06/2014 06:55	58.5
02/06/2014 07:00	65
02/06/2014 07:05	65
02/06/2014 07:10	66.80666667
02/06/2014 07:15	6.7
02/06/2014 07:20	0
02/06/2014 07:25	0
02/06/2014 07:30	0
02/06/2014 07:35	0
02/06/2014 07:40	0
02/06/2014 07:45	0
02/06/2014 07:50	0
02/06/2014 07:55	59.4
02/06/2014 08:00	6.16
02/06/2014 08:05	65.04
02/06/2014 08:10	68.38666667
02/06/2014 08:15	67.1
02/06/2014 08:20	68.8
02/06/2014 08:25	70.78666667
02/06/2014 08:30	66.5
02/06/2014 08:35	67.79333333
02/06/2014 08:40	68
02/06/2014 08:45	69.77333333
02/06/2014 08:50	65.5
02/06/2014 08:55	63.20666667
02/06/2014 09:00	6.3
02/06/2014 09:05	58.06666667
02/06/2014 09:10	6.716666667
02/06/2014 09:15	0
02/06/2014 09:20	0
02/06/2014 09:25	59.62
02/06/2014 09:30	65.1
02/06/2014 09:35	65
02/06/2014 09:40	65
02/06/2014 09:45	66.79333333
02/06/2014 09:50	66.10333333
02/06/2014 09:55	61.51666667
02/06/2014 10:00	64.61333333
02/06/2014 10:05	64.10333333
02/06/2014 10:10	66.7
02/06/2014 10:15	63.45333333
02/06/2014 10:20	63.89333333
02/06/2014 10:25	63.11333333
02/06/2014 10:30	6.93
02/06/2014 10:35	60.07666667
02/06/2014 10:40	65.24
02/06/2014 10:45	7.366666667
02/06/2014 10:50	57.85
02/06/2014 10:55	65
02/06/2014 11:00	65.89
02/06/2014 11:05	67.79333333
02/06/2014 11:10	68
02/06/2014 11:15	7.706666667
02/06/2014 11:20	58.74
02/06/2014 11:25	64.22666667
02/06/2014 11:30	7.68
02/06/2014 11:35	0
02/06/2014 11:40	57.41666667
02/06/2014 11:45	6.933333333
02/06/2014 11:50	56.74666667
02/06/2014 11:55	64.88333333
02/06/2014 12:00	67.63
02/06/2014 12:05	64.46666667
02/06/2014 12:10	64
02/06/2014 12:15	64
02/06/2014 12:20	64.88333333
02/06/2014 12:25	65
02/06/2014 12:30	65.88
02/06/2014 12:35	7.92
02/06/2014 12:40	0
02/06/2014 12:45	57.63333333
02/06/2014 12:50	65
02/06/2014 12:55	63.20666667
02/06/2014 13:00	7.14
02/06/2014 13:05	56.28
02/06/2014 13:10	64.79333333
02/06/2014 13:15	6.716666667
02/06/2014 13:20	60.07666667
02/06/2014 13:25	62.53333333
02/06/2014 13:30	63.79333333
02/06/2014 13:35	67.58666667
02/06/2014 13:40	65.31
02/06/2014 13:45	6.933333333
02/06/2014 13:50	58.28333333
02/06/2014 13:55	70.36
02/06/2014 14:00	62.495
02/06/2014 14:05	62.495
02/06/2014 14:10	6.406666667
02/06/2014 14:15	57.85
02/06/2014 14:20	65.89
02/06/2014 14:25	66.9
02/06/2014 14:30	6.923333333
02/06/2014 14:35	57.17333333
02/06/2014 14:40	7.466666667
02/06/2014 14:45	0
02/06/2014 14:50	96.84

• There is only one device plugged on the pdu so far, not sure how the other outlets are behaving as there is no load on them at the moment. Data log interval to the PDU is 10 minutes.
• Rack PDU Firmware is 5.1.6

Thank you very much.

Cem Nergiz

[BillP]

Hi Cem,

Could you provide to me data.txt? Or can you tell me if there are any readings of 0 in the on board data log? I just want to see if this problem appears to be SNMP only or if there are readings of 0 in the PDU data log too.

Instructions on getting the on board log (data.txt) via FTP are here -> How can I download Event, Data, Configuration, and Debug files from my Network Management Card? | FA...