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illegal class reported by PD

unknown

I've connected some (17) Ubiquiti WAPs to an ICX7150-ZP48.

some WAPs arent loading (all connected with direct patch cables in the lab).

it seems to be randomly not always the same WAP.

"sh inline power" output shows this error"

illegal class reported by PD

all WAP are the same model (ubiquitin AC-Lite) and have the same firmware.

it doesn't seem that the switch has any power capacity issues.

I've tried different POE configurations:

"inline power power-limit 8000" (up to 20000)

"inline power power-by-clas 3" (and 4)

and just "inline power"

the switch version is SPS08095d and the POE firmware is 02.1.8 Build 004.

any idea what happing here?

thanks

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BenBeck

Hey There,

What is the model of the Ubiquiti AP? I would like to take a look at the datasheet to check the expected power draw.

unknown

@ben_beck

thanks for responding.

all the WAPs are ubiquiti AC-Lite.
https://www.ui.com/unifi/unifi-ap-ac-lite/

unknown

@ben_beck

according to the datasheet, the Maximum Power Consumption is 6.5W.

is that what you referring to?

BenBeck

@zadok_ahiya Right. 6.5W should be no problem, so there may be something else going on. It looks like maybe that model is expecting passive POE. I see there are Ubiquiti adapters for that, but I would have to defer to Ubiquiti. I would recommend opening a case with them and asking about active/passive POE for this specific AP model. They should know if a switch is compatible or if it needs an adapter to work.

kpfleming

Are you using identical patch cables for all of the WAPs? Are they 4-pair cables? Note that the UAP-AC-Lite only supports 802.3af 'Mode A', although that really shouldn't be a problem.

unknown

@kevin_fleming

thanks for responding,

I've tried different patch cables, all of them are CAT6 cables.

the thing is that It was not consistent and happened only with the ICX-ZP48 while I've never seen this issue with the ICX-48p, both with the same ICX firmware SPS08095d POE 02.1.8 Build 004.

I did try older firmware as well.

I'm going to test it again this week, is there any other information should collect?

unknown

One comment, Ubiquiti had two revisions of the AC-LITE. The original version was not 802.11af/at compatible but rather ubiquiti-24v only. Is it possible you have a mix of older and newer APs?

In ubiquiti's page you can see the following:

*** UAP-AC-LITEs with a date code prior of 1634 or board revision before 33 only support 24V passive PoE.

https://help.ui.com/hc/en-us/articles/115000263008-UniFi-Supported-PoE-Protocols#3

maybe its that?