Power consumption on AP230 (PoE)

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  • Updated 2 years ago

I have upgraded firmware on AP230 from 6.6r2a to 6.8r1 and first thing I noticed was that the power consumption increased from around 8W to 15.6W. As a result some of my APs did not come back up because PoE switch could not provide more power.

Below is example of PoE info for AP230 with 6.6r2a HiveOS

Voltage           : 52.6 V            Current           : 155 mA
Power             : 8.1 W     Pre-std Detect : on

And HiveOS 6.8r1

Voltage           : 53.9 V            Current           : 153 mA
Power             : 15.4 W    Pre-std Detect : on

Is this expected behaviour in 6.8r1 or this is a bug in the firmware?



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Dariusz Chorzepa

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Posted 2 years ago

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Sjoerd de Jong, Employee

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No sure about why it's consuming more power, but you should always budget your power for 15.4 watt per AP (802.3af standard). although AP's are using 8 watts most of the time (in idle mode), they can peak up to 15.4. If you do not have sufficient power budget, strange behaviour can occur when running out of your switch's power budget.
(Edited)
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Dariusz Chorzepa

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I agree with the statement that we should plan for 15.4watts per AP but I think Aerohive should warn customers that from HiveOS version 6.8r1 the AP230 are going to consume twice more power than previous  versions. 

This still does not explain why AP needs to draw 15.4watts even if there are no clients connected. Can someone tell us?

Thanks

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Wataru Yamamoto

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Hello.I'm using 10AP of AP230 and checked the current power consumption.
However It looks like no problem.I think that Firmware is not the cause.

PoE SW : Juniper EX 2200 48P

6.8r1  7.2W
6.4r1g 7.5W
6.8r1  7.4W
6.8r1  7.5W
6.8r1  8.5W
6.4r1g 7.4W
6.4r1g 7.4W
6.4r1g 7.4W
6.4r1g 7.4W
6.4r1g 7.4W

Best,
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Metka Dragos

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We are currently looking into this.

Here is the information from the data sheet  about the power draw for AP230. 
Power Draw : Typical 11.41W Max16.7W
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Metka Dragos

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Dariusz,
in the HiveOS release 6.8r1 Aerohive added the LLDP PoE information and now your switch is reserving the max power. AP is still using the same amount of power as before.
You may be able to change the settings on the switch but it is recommended that you design your network PoE for the max powers and spread APs across multiple switches.( if switch is down you do not want all your APs to be down with it)