Modulation dropped after upgrading to 20.2.1

SeanWIRU · August 13, 2021, 7:34am

Hi guys

After upgrade to 20.2.1 last night, most of our SM have very low Modulation and Sector Frame Utilization shot up

Eric_Ozrelic · August 13, 2021, 5:09pm

This is most likely because some or all of your SM’s are still running a firmware revision prior to R20. Please update all your SM’s to 20.2.1.

From the release notes:

SeanWIRU · August 13, 2021, 6:10pm

450M AP only one SM did not upgrade to 20.2.1 was still on 16.1.1.1

But latency on all sm jumps around 160ms to 3400ms

SeanWIRU · August 13, 2021, 6:11pm

5Ghz freq is used all over our network

Eric_Ozrelic · August 13, 2021, 6:44pm

450M AP only one SM did not upgrade to 20.2.1 was still on 16.1.1.1

As I said and showed you in the release notes, you must upgrade your AP and SM’s to 20.2.1 or they’ll be stuck on 2X modulation.

But latency on all sm jumps around 160ms to 3400ms

This is most likely because your frame utilization is maxed out from all your SM’s being ‘stuck’ at 2X modulation.