topic Re: Interfering APs in Wireless

Interfering APs

Waltorres — Wed, 19 Oct 2022 01:42:45 GMT

MR56 network, clients are reporting disconnects in multiple classrooms.

I'm seeing the following SSIDs when viewing "Interfering APs" in Air Marshal.

My APs are on 20MHz (red circles ) channel 44

I highlighted in green what I believe could be causing interference (80MHz) channel 44+

Not sure if this is the issue since these (dashcam devices) are not on my LAN and are probably broadcasting from cars that are parked nearby.

Thanks in advance for any constructive advice.

Re: Interfering APs

Karsten Iwen — Wed, 19 Oct 2022 07:37:26 GMT

Are all your APs on channel 44? Why? With these other devices nearby and with Ch44 being also used by AWDL, I would move my APs to other channels.

Re: Interfering APs

aleabrahao — Wed, 19 Oct 2022 10:19:06 GMT

First of all, it is not recommended to put all Access Points on the same channel, so I suggest you review some wireless concepts and change this setting, as this is probably what is causing your issue.

https://documentation.meraki.com/MR/Wi-Fi_Basics_and_Best_Practices/Channel_Planning_Best_Practices

https://techimike.com/cwna-chapter-13-wlan-design/

Re: Interfering APs

Waltorres — Wed, 19 Oct 2022 12:36:30 GMT

My classroom APs are configured with an RF profile using AutoChannel assignment, which of course will assign radios to channels with low interference.

Captured this morning.

Re: Interfering APs

aleabrahao — Wed, 19 Oct 2022 12:50:23 GMT

What firmware version are you running? Something is wrong. The auto channel assignment will not assign the same channel on all radios.

Re: Interfering APs

Waltorres — Wed, 19 Oct 2022 12:52:32 GMT

MR 28.7.1

Re: Interfering APs

aleabrahao — Wed, 19 Oct 2022 13:08:15 GMT

Selec all APs and update auto channels:

Re: Interfering APs

Waltorres — Wed, 19 Oct 2022 13:13:46 GMT

Current interference.

Manually updating auto channels does help and have done it multiple times. Is there a way to block interferers that are not on my network?

Re: Interfering APs

aleabrahao — Wed, 19 Oct 2022 13:17:55 GMT

Can you share your RF profile configuration?

Re: Interfering APs

Waltorres — Wed, 19 Oct 2022 13:21:23 GMT

Re: Interfering APs

Waltorres — Wed, 19 Oct 2022 13:25:24 GMT

Re: Interfering APs

aleabrahao — Wed, 19 Oct 2022 13:46:40 GMT

It looks well, to be honest It's not common to have interference on 5Ghz channels, so I suggest you to open a case with Meraki support to investigate It.

Re: Interfering APs

Waltorres — Wed, 19 Oct 2022 14:08:06 GMT

Thank you so much for your help!

I will open a TAC ASAP and report back on this thread.