RT-AX88U not using 80MHz/160MHz, but RT-AC86U did

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iadjunct

Occasional Visitor
I'm replacing a pair of meshed RT-AC86U B1 routers with an RT-AX88U.

With the former, my MacBook Pro worked perfectly at 80MHz and had data rates around 850 Mbps.

With the latter router, which I initialized by loading the settings file from the previous router, I cannot get it to connect to anything more than a 40 MHz channel. The WiFi scanner shows the network as being a 40 MHz network.

If I change the "802.11ax HE frame support" setting, the "Enable 160 MHz" setting, or the channels, it makes no difference.

When I look at the channel layout, I see that 50 and 114 are the only channels that support 160 MHz... Though neither of those two channels appear in the list. The lower channel of both 160 MHz ranges do though, but setting the channel to those doesn't help either.

Why have I lost 80 MHz widths? I'm in the same environment as before - I literally turned off the old one and turned on the new one, so the WiFi environment is the same.
 

L&LD

Part of the Furniture
I'm replacing a pair of meshed RT-AC86U B1 routers with an RT-AX88U.

With the former, my MacBook Pro worked perfectly at 80MHz and had data rates around 850 Mbps.

With the latter router, which I initialized by loading the settings file from the previous router, I cannot get it to connect to anything more than a 40 MHz channel. The WiFi scanner shows the network as being a 40 MHz network.

If I change the "802.11ax HE frame support" setting, the "Enable 160 MHz" setting, or the channels, it makes no difference.

When I look at the channel layout, I see that 50 and 114 are the only channels that support 160 MHz... Though neither of those two channels appear in the list. The lower channel of both 160 MHz ranges do though, but setting the channel to those doesn't help either.

Why have I lost 80 MHz widths? I'm in the same environment as before - I literally turned off the old one and turned on the new one, so the WiFi environment is the same.
You should not have loaded the RT-AC86U router's backup config file to the RT-AX88U's. The issues you're seeing is direct because of this mistake. It's like you told a Dodge Viper (muscle car) it's an Omni (econobox). ;)

Do a full reset to factory defaults and minimally and manually configure the new router properly. Use defaults (at least initially) and move slowly from there. Use a new SSID too so that it gets a proper test in your network.

See the links below for further information.
 

iadjunct

Occasional Visitor
Wow, that's a significant issue. Having to re-set all the VPN, DHCP, etc settings... There's really no way to transfer those?
 

L&LD

Part of the Furniture

Grisu

Part of the Furniture
no way, not even from one to another of same type, only for the very same device and furthermore same firmware too as parameters can change with FW-upgrades!
 

JemTheWire

Senior Member
I find taking screen shots or even photos of the screen can help.

But as already said, it has to be done.
 

iadjunct

Occasional Visitor
That's completely ridiculous.

First off, if it shouldn't work by importing the config file, then it should reject the config file.

Secondly, that is a *lot* stuff to update manually.

But regardless, all done. Mac now shows 80 MHz. However, I cannot test whether the 160 MHz channels work yet, so we'll see...
 

L&LD

Part of the Furniture

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