Does WAX510D support 40MHz on 2.4G?

PeterUK

I set my USG60W as the controller for WAX510D and set the 2.4G to 20/40MHz but when I view WiFi from more phone I don't see it show that its running in 40MHz? I see my NWA1123-AC-HD run on 40MHz.

Not too big of a deal if it only supports 20MHz just thought I check.

Zyxel_Bella

Hi @PeterUK

 

Yes, the behavior in your test after reboot is correct but has to become 20MHz after 20/40MHz applied. We’ll fix the problem in the future version.

 

If your expectation of the AP is to use 40MHz to provide services at 2.4G, you can use the command to disable-coexistence after configure channel width to 40MHz.

Router# configure terminal

Router(config)# wlan-radio-profile default

Router(config-wlan-radio default)# dot11n-disable-coexistence

dev.wifi1.dcs_manual_ch = 1 0

Setup 2.4G 11AX HE40 channel 6

Setup 2.4G 11AX HE40 channel 6

dbctl> DB Success!

dbctl> DB Success!

dbctl> DB Success!

dbctl> DB Success!

Reload DCS Configuration file

Setup 2.4G 11AX HE40 channel 6

Setup 2.4G 11AX HE40 channel 6

Router(config-wlan-radio default)# exit

Router(config)# write

 

Please noted that in the normal environment, there are a lot of frequency using radio 2.4GHz and causing the interference so a single 20MHz channel will be more stable to use in radio 2.4GHz. Also for legacy client can connect to 2.4GHz SSID without compatible problem.

 

Regards,

Bella

Zyxel_Bella

Hi @PeterUK

 

The commands are in the post on April 27 for you to apply on AP by ssh into AP directly.

 

If your expectation of the AP is to use 40MHz to provide services at 2.4G, you can use the command to disable-coexistence after configure channel width to 40MHz.

 

Router# configure terminal

Router(config)# wlan-radio-profile default

Router(config-wlan-radio default)# dot11n-disable-coexistence

dev.wifi1.dcs_manual_ch = 1 0

Router(config-wlan-radio default)# exit

Router(config)# write

 

After commands take effect, AP can keep service in channel width 40MHz of radio 2.4GHz even your environment has legacy device.

 

Regards,

Bella

Zyxel_Bella

Hi @PeterUK

 

Both WAX510D and NWA1123-AC-HD supports 40MHz on 2.4G.

Select the channel width 20/40MHz means AP will choose bandwidth 20 or 40MHz to provide wireless service.

The AP adjusts the bandwidth to 20MHz if the AP has detected stations is compatible with 40MHz or other SSID uses 20MHz to broadcast in the environment.

So you can see WAX510D and NWA1123-AC-HD services in different bandwidth.

Hope you find this information helpful. Thank you.

 

Regards,

Bella

PeterUK

Think I found a bug then

On a reboot of the WAX510D set with 2.4G 11ax 20/40MHz it only runs in 20MHz mode but if I then change the channel width to 20MHz ok then back to 20/40MHz it runs in 40MHz mode.

firmware V6.10(ABTF.10)

Zyxel_Bella

Hi @PeterUK

 

Because AP scans environment during the reboot process, it set to 20MHz if detect the rules mentioned above.

You could also check if there's wireless signal using 20MHz via 2.4GHz by a wireless scanning tool like inSSIDer.

 

Regards,

Bella

PeterUK

Not 100% sure thats right as changing 2.4G to 20MHz then back to 20/40MHz a wireless scanning tool shows 40MHz where as a reboot shows 20MHz surely it should show 40MHz even without clients that support 40MHz connected?

Zyxel_Bella

Hi @PeterUK,

 

AP won’t scan but only apply configurations if change the channel width setting.

The channel width narrows to 20MHz when other functions trigger scan and detect legacy devices.

Hope the mechanism description can make you more clarify.

Thank you

 

Regards,

Bella

Greenlight

@PeterUK

Which Wi-Fi scanning tool did you use? I tried your testing process with my WAX650S, but the channel width always stay in 20MHz whatever the channel width is configured at 20 or 20/40.

So an idea just comes in my mind: Could the scanning tool read the 40 MHz capability inside AP's Beacon, and mis-print the channel width?
Or, could the 20MHz only device be far away from your place, so the AP can't easily detect that device and switch to 20MHz immediately?

The only moment I can see the 40 MHz channel width on GUI is, when I change the radio from a fixed 20/40 channel to a DCS 20/40 channel, in the short time AP will show 40 MHz, but soon recover to 20 MHz. (Guess it's because AP detects other 20MHz only devices)

PeterUK

Greenlight said:

Which Wi-Fi scanning tool did you use? 

I used pingtools and net analyzer

Here the thing why does 5G show the correct channel width but 2.4G does not?

Greenlight

Is the APP "net analyzer" on the Android System? I can't find the related APP on Apple store that can check the channel width...

BTW, I use My laptop with inSSIDer for above the test I mentioned above.

Zyxel_Bella

Hi @PeterUK

 

Only 2.4GHz has coexistence when detect legacy device but 5GHz will not.

 

Regards,

Bella

PeterUK

Greenlight said:

Is the APP "net analyzer" on the Android System? 

yes