Please help me to turn off channel auto optimisation on 2.4GHz WiFi

[yjiang]

My Sagecom WiFi router often changes 2.4GHz WiFi channel. I specify channel 11 but often changes to 6. 

I have two WiFi bridges connected to the Sagecom WiFi router, which do not support such channel changes.

Could please help me turn off such channel auto optimisation. I do not want such auto 2.4GHz WiFi channel change. Thanks!

[KeithFrench]

Hi @yjiang 

There is an auto option, but whatever you select can be overwritten by WiFi Optimisation. I will need to see the reports at a good time & a bad time.

Do not worry about interpreting the results, I will do that for you. I will send a PM to you that contains a link for a guide of mine on Wi-Fi interference. It is quite long (about 30 pages), but you will probably only need to look at three or four pages in total. Initially look at the section called "Are you suffering from interference – prove it first". This is the first link in the table of contents. This section includes full details of free Wi-Fi analysers that I recommend for Windows, Windows phone, Android and Apple operating systems. However, I have no way of testing the Apple product. Select the analyser of your choice & my guide explains how to use it.

If you are using Wi-Fi Scanner, then please attach the zip file to this thread. As soon as I have downloaded it, I will remove the attachment from your post, to preserve your privacy.

With all other analysers, please follow my instructions below.

Collect the screenshots that I require and include them in your reply.

Please post the screenshots to me in a PM (to protect your privacy), which I have requested in my guide. No photos please as they can be difficult to read, because the text can get out of focus when zoomed in. Please ensure that the analyser window is maximised (if Windows) before taking the screenshots & upload them via the "Insert Photos" button (in a mobile browser it's the picture icon) on the post editor's toolbar with the Size parameter set to Large.

[Debbie-TalkTalk]

Thanks @yjiang Keith will let me know if we need to do anything too to help.

@KeithFrench - Thank you

[yjiang]

OK, please send me the instructions to help diagnose. But I have no idea how to reproduce the issue, it is quite random. 

[Debbie-TalkTalk]

Hi @yjiang 

@KeithFrench has fixed many customers issues with WIFI issues. We can also help if a booster is required for coverage issues.

[yjiang]

In WiFi router administration UI (http://192.168.1.1/), could I have a way to manually force 2.4GHz WiFi to some channel without channel optimisation? I think that an "automatic" value could be added in the selection of 2.4GHz WiFi channel to enable 2.4GHz WiFi channel optimisation. With the change, the following are possible values for the selection of 2.4GHz WiFi channel. 

• automatic
• 1
• 2
• 3
• ...
• 11

[KeithFrench]

Hi @yjiang 

I will not know the root cause until I have done my independent analysis. This may well reveal the reason for your channel changes. TalkTalk is no longer allowed to disable WiFi Optimisation.

Still, if you do not want my help, then that is up to you.

[yjiang]

Sorry, I do not agree with the root cause analysis because the root cause is not for my issue. 

My issue is why router changes my specified 2.4GHz WiFi channel from 11 to 6? I do not want this change at all. If channel 11 stop working, just keep it at channel 11. My WiFi bridges do not support such channel migration at all. 

Frankly speaking, I did not see any issue at channel 11 before. The issue occurs when channel is changed to 6. 

[Debbie-TalkTalk]

Thanks @KeithFrench 

[KeithFrench]

Hi @yjiang 

@Debbie-TalkTalk has asked me to help you with these problems. You mention that you have two WiFi bridges in addition to the Sagemcom, what make/models are these?

Whilst doing such an investigation, the cause is not always WiFi Optimisation being enabled, but I do take an impartial view to this.

Slow speed, intermittent dropouts, breaks in the signal or no signal on some or all devices or no internet access might be caused by Wi-Fi interference from other local networks, which can also lead to a permanent reduction in speed. No ISP can be responsible for your local environment, this is mainly a byproduct of the popularity of Wi-Fi.

Generally speaking, the 2.4GHz band suffers a lot more from interference than the much faster 5GHz band, but the 2.4GHz one can sometimes have a better range, but this all depends on your local area.

In other words, I try to help you optimise your Wi-Fi connection. The next stage involves sending out a guide to you to help you get me some important diagnostic results so that I can analyse them for you and recommend changes to your router configuration to solve them.

I only send this out to people who request it.

[Debbie-TalkTalk]

Hi yjiang

Our Community Star @KeithFrench offers great advice on improving wireless performance for issues like this.

Would you be able to offer some assistance please Keith?

[yjiang]

When the channel is changed, all my 2.4GHz WiFi devices lost WiFi connection. This includes my Ring door bell and two WiFi bridge. My 5GHz WiFi device cannot ping any 2.4GHz WiFi devices. Once I manually change WiFi channel back to 11, then all 2.4GHz WiFi devices restore WiFi connection.

I manually forced my Laptop to connect 2.4GHz WiFi when the channel is 6 but no luck to connect. 

[Chris-TalkTalk]

Hi Yjiang,

I'm sorry but as ferguson has said, we no longer do this. What happens when the channel changes?

Chris

[ferguson]

It can't be done I'm afraid. Wait for further advice from the support team.