R7800 SmallNetBuilder Review

[sm00thpapa]

When HT160 is enabled all 5Ghz devices fall off and can't find the 5GHz network. This includes a LG 4K HDTV, iPad Air, iPad Air 2, Galaxy S7, Amazon Ehco, LG G4, Xbox 360, Insignia Roku TV and Amazon Fire Stick. When disabled everything re-connects. Anyone else aware of this issue? Thanks.

 

[pege63]

Source

 

[thiggins]

When HT160 is enabled all 5Ghz devices fall off and can't find the 5GHz network. This includes a LG 4K HDTV, iPad Air, iPad Air 2, Galaxy S7, Amazon Ehco, LG G4, Xbox 360, Insignia Roku TV and Amazon Fire Stick. When disabled everything re-connects. Anyone else aware of this issue? Thanks.

When 160 MHz mode is enabled, what channel does the router GUI show is being used?

 

[bodean]

Source

Ive always read its not recommended to use DFS channels for 5ghz in the US. Am I missing something ?

 

[bodean]

When HT160 is enabled all 5Ghz devices fall off and can't find the 5GHz network. This includes a LG 4K HDTV, iPad Air, iPad Air 2, Galaxy S7, Amazon Ehco, LG G4, Xbox 360, Insignia Roku TV and Amazon Fire Stick. When disabled everything re-connects. Anyone else aware of this issue? Thanks.

As far as I know, nothing out there uses HT160 yet, especially none of the devices you've listed. so is there a reason you want it enabled?

 

[sfx2000]

When HT160 is enabled all 5Ghz devices fall off and can't find the 5GHz network. This includes a LG 4K HDTV, iPad Air, iPad Air 2, Galaxy S7, Amazon Ehco, LG G4, Xbox 360, Insignia Roku TV and Amazon Fire Stick. When disabled everything re-connects. Anyone else aware of this issue? Thanks.

That's odd - if I recall Netgear is doing HT160 as 80+80, so it shouldn't make a difference there..

What's the setting for MU? I think that's the default as being enabled - what happens if HT160 is true, and MU is false?

 

[thiggins]

That's odd - if I recall Netgear is doing HT160 as 80+80, so it shouldn't make a difference there..

That's correct. But firmware 1.0.2.12 adds DFS channel support. So it could be choosing a DFS channel as primary?

 

[sfx2000]

That's correct. But firmware 1.0.2.12 adds DFS channel support. So it could be choosing a DFS channel as primary?

It could - but at the same time, at least a couple of those clients do support DFS, and as long as the SSID isn't hidden, the clients can assume that the DFS checks pass, and that allows them to start the whole association handshake (probe request from client, response from AP, and then initiate the WPA2 handshakes...).

The primary channel is always 20MHz, and in both 160 and 80+80, the info elements are there to indicate which channels are used...

 

[sfx2000]

So I don't think this is a DFS related issue, but more along the lines of something in the beacon that might be out of spec perhaps - without getting a wireless packet capture, one can only guess..

 

[sm00thpapa]

Found my issue. I was on CH 153 which is not supported by 160MHz. Switched to CH 48 160MHz and all is good. Just wanted to see if in 160MHz mode if 80MHz devices would work.

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[thiggins]

Found my issue. I was on CH 153 which is not supported by 160MHz.

How do you know that?

 

[sm00thpapa]

When 160 MHz mode is enabled, what channel does the router GUI show is being used?

CH 153, from my understanding from reading only channels 36-128 have been allocated for consumer use.

 

[sm00thpapa]

As far as I know, nothing out there uses HT160 yet, especially none of the devices you've listed. so is there a reason you want it enabled?

Testing for coexisting of 80MHz and 160MHz devices.

 

[sm00thpapa]

I must say I'm pretty happy with this router. Has further range on both bands then my 68P and 88U. Stable WIFI and strong signal in my entire home and property = a happy family. Wish I jumped on board a little sooner.

 

[pege63]

That's correct. But firmware 1.0.2.12 adds DFS channel support. So it could be choosing a DFS channel as primary?

I'm curious how we can see that it is on 80+80, 160 MHz in the stock GUI on 5GHz?
There is no setting to do for 20/40/80+80/160MHz in the GUI?
Beside this settings.

So for me who is in Sweden, Europe is just 2 channels (42, 58) on the 80MHz and 1 channel (50) on the 160MHz

 

[sm00thpapa]

These DFS channels are very confusing. I see now if you choose a DFS channel the router scans for radars for 1 to 2 minutes and if clear then the router will connect the devices.

 

[pege63]

I believe that the entire FW with the GUI is wrong on all routers its screwed up.
Why do they show all the CH thats in the list and not just the CH thats should be showen in the GUI for 20/40/80/180MHz on 2.4 and 5GHz band?
It makes NO sence to me at all?!

 

[Razor512]

I did some testing with HT160 enabled and then testing a few different primary channels.

Sadly, one thing I can't seem to figure out is what does it do if radar use is detected while it is using a few DFS and non-DFS channels.


WiFi channels: 153, 157, 136 (DFS). It seems to like a specific grouping of channels.

Next I tried channel 128 (DFS) so that it would use a channel that was outside of the previous group of channels.

Now it seems to go with a different group which the primary channel will cycle through, without effecting the overall range of channels being used.
Going to the next channel below 100, being 64 on the router, it then jumps to a new block of channels.

There no longer seems to be a way to avoid the DFS channels.

Also, I wonder, why are the DFS channels in Europe different than the ones in the US, if it has to do with radar, then what happens if a plane flies from a place in Europe, to the US, do they have to go into the radar settings and switch which channels it uses?

 

[sfx2000]

Also, I wonder, why are the DFS channels in Europe different than the ones in the US, if it has to do with radar, then what happens if a plane flies from a place in Europe, to the US, do they have to go into the radar settings and switch which channels it use

It's not the airplanes...

It's regional issues with Weather Radar and also the Military stuff...

 

[pege63]

I dont understand it at all from this list i should have access to those channels:

But my shows this:

But this CH is for 20MHz N?

So the question, is the picture wrong about CH for Europe or wath is the problem with it?
So Why did it not show right ch for the 40/80/160 MHz?
NOW i have tested sevral REGIONs they all shows same CH list, its the US region and its in the 20MHz, so its must be the region settings thats wrong.

As the valid channel numbers for various channel widths are:
20 MHz: 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, (144, 149, 153, 161, 165, 169) NOT for EU
40 MHz: 38, 46, 54, 62, 102, 110, 118, 126, 134, (142, 151, 159) NOT for EU
80 MHz: 42, 58, 106, 122, (138, 155) NOT for EU
160 MHz: 50, 114


N is on 20/40 width and AC is on 80/160 width, right?

Or can AC also be on 20/40MHz width, cant be true?

Can some one bone this out for me, please!