topic Re: Medium Power vs Full Power on 1852 in Wireless

Medium Power vs Full Power on 1852

B A — Mon, 05 Jul 2021 18:00:49 GMT

Hello.

I have this issue. I connected many AIR-AP1852I-E-K9 and AIR-AP1852E-E-K9 (they need 20.9W) to different switches that provide 15.4W so I saw "PoE/Medium Power (15.4 W)" on WLC. To provide what my APs need I used a power injector but even after that the WLC says "PoE/Medium Power (15.4 W)".
I tried three power injectors... Cisco, TP-Link and Maxi-Link. Still no joy.

Any idea what is going on?

Re: Medium Power vs Full Power on 1852

jagan.chowdam — Mon, 16 Sep 2019 12:59:34 GMT

If you know for sure that switch or POE Injectors can provide 802.3at power, then probably it might be a bug.

Can you share the output of the following commands

On AP

show controllers dot11Radio 0

On WLC

show ap config 802.11b <AP Name>

Regards,

Re: Medium Power vs Full Power on 1852

B A — Tue, 17 Sep 2019 12:49:51 GMT

Switches cannot provide 802.3at power so we use 802.3at power injectors that should be capable of it.

WLC: A command shows 15.4W.

I checked logs on the AP and it says: CDP POE negotiation failed.