Over the last few months I experience an unresponsive Zigbee network. This results in the following error: Failed to send request: Failed to deliver message: <EmberStatus.DELIVERY_FAILED: 102>
Reloading the ZHA integration instantly solves the issue and all devices are instantly back online.
Since this happens random, I want to take action.
I downloaded the diagnostics and I found out that the default channel is noisy (see below).
What are the recommended steps? And can I use the “Change channel” setting? Or even put in on auto?
Changing the channel is not a simple “flip it and move on process”. You’ll need to repair a lot of your end devices and your mesh will need time to heal itself (sometimes it takes days for this to happen). As such, there is no “auto” setting. Once the channel is set, it’s set until you change it.
I’d look at other causes. How many router (mains powered) devices do you have? How many end devices (battery powered) do you have? What kind of coordinator? Is it on a USB extension cable and away from EMF interference sources (router, AP, computers, etc)?
You don’t mention your “default” Zigbee Channel, but i assume you mean 15 ( i have on 11 And 15 )
However you have high numbers on 15-19, that is WIFI Chanel 6, check your Router first, make sure 2.4 is Not on WIFI Channel 6 (If so, change WIFI to 11)
All of that that is not quite true if using later version of the ZHA integration as it is now relativly easy to change Zigbee channel from the UI (ZHA integration documentation is not updated to reflect this), at least it should change the channel for all mains-powered Zigbee devices as long as they have power and are connected. You will still need to re-pair most battery-power devices after the Zigbee channel has changed on all your mains-powered Zigbee devices, as battery-power devices are sleepy devices they will likley not recieve the change channel event broadcast that is sent out so they do not know to change channel.
Which is even more a reason, to make sure your WIFI 2.4 is on wifi-channels 11 ONLY ! , which was the “important part” of my commend, the first sentence, was merely to let you understand, that for people to be able to provide relevant suggestion/help, it’s in this case quite vital how your network looks like, Zigbee as well as WIFI
And Hedda has provided you with a link, where you can get more hints , which could be relevant to include in your initial Post
PS: Some Wifi Routers have a “default” i.e using wifi-channes 6+11(for some to me unknown reasons), And some people using wifi repeaters, or additional AP’s(mesh) sometimes find a reason, to “split/combine” Channels, using 2 ( 1+6 or 6+11 )
As mention 15 it’s not Your only channels which have high number, so it could indicate you are using 2 (6+11) wifi channels
And Yes in rare cases i’ve seen someone who thought it was a good idea, letting the wifi devices “floating” around using all wifi-channels ( No that will Not guarantee a stable or better network ! )
