topic Re: illegal class reported by PD in ICX Switches

illegal class reported by PD

zadok_ahiya — Wed, 06 Oct 2021 10:14:51 GMT

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

Re: illegal class reported by PD

BenBeck — Wed, 06 Oct 2021 14:06:20 GMT

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.

Re: illegal class reported by PD

zadok_ahiya — Wed, 06 Oct 2021 14:10:36 GMT

@ben_beck

thanks for responding.

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

Re: illegal class reported by PD

zadok_ahiya — Wed, 06 Oct 2021 14:15:46 GMT

@ben_beck

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

is that what you referring to?

Re: illegal class reported by PD

BenBeck — Wed, 06 Oct 2021 14:41:55 GMT

@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.

Re: illegal class reported by PD

zadok_ahiya — Thu, 07 Oct 2021 14:16:39 GMT

Thanks, Ben

you can see that all other WAPs are loading properly,

if the issue was with WAP requirements, wouldn't it happened with all WAPs (which are from the same model and firmware) and permanently?

In my case, it seems to happen arbitrarily on different WAPs.

is there a way of adjusting the POE parameters on the switch side?
other than what I've mentioned previously?

thanks

Re: illegal class reported by PD

BenBeck — Thu, 07 Oct 2021 14:48:01 GMT

Generally speaking, the behavior should be consistent. With that said, our default configs would allow plenty of wattage and the AP should only draw what it needs. You can change the power settings, but it really only changes the allocation, not delivery method. I would still recommend checking with the vendor as I do think those APs need passive POE.

Example of changing power limits to 15w:

conf t

int eth 1/1/1

inline power power-limit 15000

Re: illegal class reported by PD

zadok_ahiya — Thu, 07 Oct 2021 15:22:21 GMT

@ben_beck

got it.

ill check with them.

I've already tried different power allocation configuration, limits and by-class.

thanks

Re: illegal class reported by PD

kpfleming — Sun, 10 Oct 2021 00:20:01 GMT

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.

Re: illegal class reported by PD

zadok_ahiya — Sun, 10 Oct 2021 06:06:23 GMT

@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?

Re: illegal class reported by PD

diego_garcia_de — Mon, 11 Oct 2021 20:22:56 GMT

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?