Netgear R6400 (V1) & A6200 Can't see 5GHZ Network

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Format_C
DD-WRT Novice


Joined: 25 Oct 2017
Posts: 29
PostPosted: Wed Nov 21, 2018 22:00    Post subject: Netgear R6400 (V1) & A6200 Can't see 5GHZ Network Reply with quote
I have a Netgear R6400 (V1) and a Netgear A6200 AC WiFi adapter. I have installed DD-WRT and the A6200 now cannot see either (Main or Guest) of the 5GHZ networks. It worked fine of the OEM Netgear Genie Firmware. What did I do wrong?

I am using this version of DD-WRT

Code:
DD-WRT v3.0-r37015M kongac (09/23/18)
Linux 4.4.157 #603 SMP Sun Sep 23 01:10:11 CEST 2018 armv7l


Thanks

Screenshot_2018-11-21 Netgear R6400 (build 37015M) - Wireless2.jpg
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Screenshot_2018-11-21 Netgear R6400 (build 37015M) - Wireless2.jpg
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bushant
DD-WRT Guru


Joined: 18 Nov 2015
Posts: 2036
PostPosted: Thu Nov 22, 2018 1:05    Post subject: Reply with quote
I do not have an A6200 but first thing is pick a channel. Don't use auto. Use regulatory domain Australia, Canada, Haiti, or United States to see the most channels they say. Might have a look at these:
https://wiki.ddwrt.com/wiki/index.php/Basic_Wireless_Settings
https://wiki.ddwrt.com/wiki/index.php/Advanced_wireless_settings
Hope this fixes you.
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egc
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Joined: 18 Mar 2014
Posts: 12884
Location: Netherlands
PostPosted: Thu Nov 22, 2018 10:02    Post subject: Reply with quote
Like @Bushant said: do not use auto.

Tested domains are US, Eur and Germany, but others will probably work also.

Furthermore some clients do not play nice with 80 MHz channel width, start with 40 and when it works you can go to 80.

Set mode to AC/N.

On Wireless security set Rekey interval to 0

Start without the VAP (just delete it and reboot, your settings are saved , so you can easily enable it again), there are a lot of problems with connecting to a VAP, but there are workarounds available.
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Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
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bushant
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PostPosted: Thu Nov 22, 2018 13:48    Post subject: Reply with quote
egc wrote:
Set mode to AC/N.

FWIW I did not mention AC/N mode because before I wrote that yesterday I set mode to AC/N and my old laptop would not connect so I stayed with Mixed. Also I use Haiti with channel 149 uu vht80 and everything I have works fine. This is on the r7800 and r7500.
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Format_C
DD-WRT Novice


Joined: 25 Oct 2017
Posts: 29
PostPosted: Fri Nov 23, 2018 22:43    Post subject: Reply with quote
Thank You bushant @ egc.

I selected a Channel (161, VHT80, Upper Upper) I can now see and connect to the 5GHZ network with the A6200.

Thanks again!

Now if I can only figure out how to properly do a guest network with one on each band so far I can only get it working with one band
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egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12884
Location: Netherlands
PostPosted: Sat Nov 24, 2018 11:40    Post subject: Reply with quote
In the first post of the build thread there are 2 work arounds mentioned when you have VAP problems, you could try them.
see: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=317466
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
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