topic Re: MR 32.1.6 - Fixes for random 100Mbps in Wireless

MR 32.1.6 - Fixes for random 100Mbps

Raphael_L — Wed, 28 Jan 2026 04:37:11 GMT

mportant note

MR45/55 APs are not supported on MR 32.x.x and will instead upgrade to the backup version (MR 31.1.8) if they are in networks configured for MR 32.x.x versions, and thus, new features will not be available.

Enhancement

Enable class 2 PoE (7W) output when AP is supplied with PoE+ (802.3at) power budget for CW9172H (https://documentation.meraki.com/Wireless/Product_Information/Overviews_and_Datasheets/CW9172H_Datasheet)

Bug fixes

General stability, performance, and experience improvements
APs not using configured SGT tag (Wi-Fi 6, 6e, Wi-Fi 7)
RADSec authentication stuck (Wi-Fi 6, 6e, Wi-Fi 7)
Wi-Fi calling not working (Wi-Fi 6, 6e, Wi-Fi 7)
WebEx DeskPro connectivity issues (Wi-Fi 6, 6e, Wi-Fi 7)
APs previously on 1 Gbps suddenly negotiating at 100mbps after a few hours (Wi-Fi 6, 6e)

Re: MR 32.1.6 - Fixes for random 100Mbps

Raphael_L — Wed, 28 Jan 2026 04:41:47 GMT

APs previously on 1 Gbps suddenly negotiating at 100mbps after a few hours (Wi-Fi 6, 6e)

This is a behavior that has been discussed for a while here and never acknowledged in any firmware.

I can't wait to fix this issue 😇

Re: MR 32.1.6 - Fixes for random 100Mbps

russell.sage — Wed, 28 Jan 2026 08:36:43 GMT

Does this indicate a bug 32.1.5 as we are just about to upgrade to this version of code to fix the channel selection issue

Re: MR 32.1.6 - Fixes for random 100Mbps

Raphael_L — Wed, 28 Jan 2026 13:32:57 GMT

The 100Mbps has been there for ages. I think since MR 28.

Re: MR 32.1.6 - Fixes for random 100Mbps

Macguy1 — Thu, 29 Jan 2026 16:10:48 GMT

APs previously on 1 Gbps suddenly negotiating at 100mbps after a few hours (Wi-Fi 6, 6e)

I've seen this on non Wi-Fi 6 AP's... that can't get this firmware 😡

Re: MR 32.1.6 - Fixes for random 100Mbps

Trepptronics — Tue, 24 Feb 2026 13:02:08 GMT

One would think that this 100mbps issue would be looked into with more urgency because it has been going on for so long. We manage 5500+ Meraki AP's (MR46's and 9164's), and see this on a regular basis - mostly with the MR46's. Sometimes it is a cabling/keystone/switchport issue, but we have troubleshot this issue enough times to recognize when it is an AP problem. I can't wait for the fix either......

Re: MR 32.1.6 - Fixes for random 100Mbps

Raphael_L — Tue, 24 Feb 2026 13:17:52 GMT

Have you tried the firmware yet ? We are still rolling this one out. We have about the same amount of APs.

Re: MR 32.1.6 - Fixes for random 100Mbps

Trepptronics — Wed, 25 Feb 2026 11:10:08 GMT

Yes. The AP was upgraded from 31.1.7 => 32.1.6 with no changes in connection speed. I'm going to RMA it. We have several other MR46's that have been swapped out for this same problem, so we'll probably connect each one of these and upgrade the firmware to the latest version to see what happens. If the firmware fixes some of them, we'll redeploy and check for stability.

Re: MR 32.1.6 - Fixes for random 100Mbps

Trepptronics — Mon, 09 Mar 2026 13:43:53 GMT

We recently (a couple of days ago) upgraded our production APs (mixture of MR46's and 9164's) from 31.1.7 to 32.1.6. Over 5500 APs. Upgrade was transparent to the end users as we haven't received any reports/tickets about problems with connectivity (nothing above the usual). However, there was no change in the number of 100Mbps connected AP's, but those could be non-firmware related problems.

Re: MR 32.1.6 - Fixes for random 100Mbps

Raphael_L — Mon, 09 Mar 2026 13:47:59 GMT

We have the same amount of APs to upgrade this month to upgrade , I will post our results. I would expect atleast a few to be fixed but we have for sure some cabling issues.

Re: MR 32.1.6 - Fixes for random 100Mbps

jkoch22 — Wed, 11 Mar 2026 16:06:06 GMT

Hey @Trepptronics, we upgraded over 1200 MR46s and have a small number of them that refuse to broadcast their SSIDs until rebooted. 5GHz always shows 100% utilization. Same symptoms across multiple sites. I'm just curious if you are also seeing this? I sorted the APs by number of connected clients and found the ones with no clients that I knew should have clients connected.

Re: MR 32.1.6 - Fixes for random 100Mbps

citybett1 — Tue, 24 Mar 2026 18:57:36 GMT

@jkoch22 I'm seeing the same thing with my APs (they're all MR44). Random access points across all sites not allowing clients to connect to 5Ghz, and 5Ghz showing 100% utilization. Rebooting the access point gets clients connected to 5Ghz again.

Speaking with Meraki support, it sounds like it's a firmware bug and they've advised me to roll back to firmware 31.1.8. Haven't had a chance to do that yet.

Re: MR 32.1.6 - Fixes for random 100Mbps

Raphael_L — Tue, 31 Mar 2026 15:45:09 GMT

Quick update on this firmware. The wording has changed a bit :

Access points software versions MR 32.1.6 changelog

Important note

MR45/55 APs are not supported on MR 32.x.x and will instead upgrade to the backup version (MR 31.1.8) if they are in networks configured for MR 32.x.x versions, and thus, new features will not be available.

Enhancement

Enable class 2 PoE (7W) output when AP is supplied with PoE+ (802.3at) power budget for CW9172H (https://documentation.meraki.com/Wireless/Product_Information/Overviews_and_Datasheets/CW9172H_Datasheet)
Enhancements to Ethernet link negotiation mechanisms have been implemented to detect temporal link degradation and attempt link recovery when a degraded state is identified.

Bug fixes

General stability, performance, and experience improvements
APs not using configured SGT tag (Wi-Fi 6, 6e, Wi-Fi 7)
RADSec authentication stuck (Wi-Fi 6, 6e, Wi-Fi 7)
Wi-Fi calling not working (Wi-Fi 6, 6e, Wi-Fi 7)
WebEx DeskPro connectivity issues (Wi-Fi 6, 6e, Wi-Fi 7)
~~APs previously on 1 Gbps suddenly negotiating at 100mbps after a few hours (Wi-Fi 6, 6e)~~

Re: MR 32.1.6 - Fixes for random 100Mbps

Trepptronics — Fri, 17 Apr 2026 11:50:47 GMT

@ jkoch22 - we haven't seen that behaviour.