WRT3200ACM 5G Ip Address

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victimist
DD-WRT Novice


Joined: 04 Oct 2007
Posts: 4

PostPosted: Mon Apr 12, 2021 15:26    Post subject: WRT3200ACM 5G Ip Address Reply with quote
Hi Guys
I used DD-WRT back in the day of the LInksys WRT54G. Recently i purchased a Linksys WRT3200ACM. This weekend just gone, i installed DD-WRT onto my 3200.

My intension was to setup a router, as a VPN client for NORD. The VPN config went a breeze, and i have no issues with devices that are cabled in. Wifi i really struggled to get going and found a post which pointed out Build 40009 as a know working ver. After installing 40009, i managed to get Wifi working with the following settings:

Ath0
mode - AC/N Mixed
channel width VHT80
channel - 116
ssid - ddwrt
WPA2 Personal, AES
key renewal - 86400

Ath1
Mode - mixed
channel width - Full (20 MHz)
Channel - 9
Turbo QAM - disabled
ssid - dd-wrt
WPA2 Personal, AES
key renewal - 86400

ATH2
Disabled

Im facing an issue, where i struggle to get connected to Wifi. The 1st connection worked straight away, and i noticed that my device switches from 2.4G to 5G. Initially on the router, i see both 2.4G and 5G lights active, and then 2.4G turns off and my connection remains active on 5G.

When i disconnect and try reconnect, the device is defaulting to 5G. I can see the connection beign made with the router, but eventually the connection fails to obtain an IP address. When i get lucky enough, my device authenticates over 2.4G, i get an IP, and then it switches back to 5G without any issue.

Is this a know issue and would anyone have any idea how i could correct the behaviour so that i can obtain an ip on 5G?

Hopefully i've provided enough info, but please let me know if anything is missing.

Thanks for you help.
Sponsor
victimist
DD-WRT Novice


Joined: 04 Oct 2007
Posts: 4

PostPosted: Mon Apr 12, 2021 17:42    Post subject: syslog Reply with quote
Not sure if this will help at all ... I tried turning on syslog to see if it pointed at anything useful. Seems clean although it does show how the device bounces around


Initially tried to connect on ath0 (5G) - Authentication Successful, but no IP
Apr 12 18:17:27 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f MLME: auth request, signal -65 (Accepted)
Apr 12 18:17:27 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f MLME: assoc request, signal -65 (Accepted)
Apr 12 18:17:27 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f IEEE 802.11: associated (aid 1)
Apr 12 18:17:28 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f RADIUS: starting accounting session DB1F73D4F6177883
Apr 12 18:17:28 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f WPA: pairwise key handshake completed (RSN)
Apr 12 18:17:28 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f IEEE 802.11: authenticated

The device then connects on ath1 (2.4G) - this time obtaining an IP.
Apr 12 18:18:07 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f MLME: auth request, signal -65 (Accepted)
Apr 12 18:18:07 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f MLME: assoc request, signal -69 (Accepted)
Apr 12 18:18:07 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f IEEE 802.11: associated (aid 1)
Apr 12 18:18:08 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f RADIUS: starting accounting session B41C72F78BDC75F7
Apr 12 18:18:08 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f WPA: pairwise key handshake completed (RSN)
Apr 12 18:18:09 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f IEEE 802.11: authenticated

The connection flicks back to ath0 (5G) - the device retains its IP
Apr 12 18:20:19 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f MLME: auth request, signal -70 (Accepted)
Apr 12 18:20:19 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f MLME: assoc request, signal -70 (Accepted)
Apr 12 18:20:19 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f IEEE 802.11: associated (aid 1)
Apr 12 18:20:19 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f RADIUS: starting accounting session BBA36971FFB2E15F
Apr 12 18:20:19 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f WPA: pairwise key handshake completed (RSN)
Apr 12 18:20:19 DD-WRT daemon.info hostapd: ath0: STA 91:09:cf:6e:c9:0f IEEE 802.11: authenticated

The device drops its connection to ath1 (2.4G) in favour of ath0 (5G) - The connection remains stable on the device
Apr 12 18:25:30 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f IEEE 802.11: disassociated due to inactivity
Apr 12 18:25:31 DD-WRT daemon.info hostapd: ath1: STA 91:09:cf:6e:c9:0f IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)


Its just the initial hurdle of getting connected which I'd like to get resolved.
blkt
DD-WRT Guru


Joined: 20 Jan 2019
Posts: 3461

PostPosted: Mon Apr 12, 2021 21:18    Post subject: Reply with quote
Build r40009 (06/11/2019) is an older fallback and currently is r44048 (08/02/2020) for Marvell WRT series.

A lot has changed so you may need to force refresh or clear history. Also avoid Chrome-ium web browsers.
Pale Moon (52), Waterfox (Latest 78, Classic 56), Firefox ESR 78 Portable or Firefox ESR Legacy (68/52/45)

If problems persist nvram erase && reboot from Telnet as root and then manually reconfigure from scratch.

If you use smart home automation devices, IoT, smart switch, doorbell etc. this router's wifi is problematic.
To configure around this problem try disabling LDPC (old method was disable WMM), or BG-Mixed / G-Only.
victimist
DD-WRT Novice


Joined: 04 Oct 2007
Posts: 4

PostPosted: Mon Apr 12, 2021 22:07    Post subject: Reply with quote
Thanks a stack blkt, really appreciate all the help and info! Ill give 44048 a go when I next get some time spare and report back (May only be at the weekend).

I've noticed the Unit runs pretty hot (CPU 73.6 / WL0 44.9 / WL1 46.6) despite the load being next to nothing. Is this normal and have you got any recommendations for cooling?

Thank again
blkt
DD-WRT Guru


Joined: 20 Jan 2019
Posts: 3461

PostPosted: Mon Apr 12, 2021 22:36    Post subject: Reply with quote
There are solutions like this one or these two, but maybe instead save money for Netgear R7800 or R9000.
victimist
DD-WRT Novice


Joined: 04 Oct 2007
Posts: 4

PostPosted: Thu Apr 15, 2021 10:13    Post subject: Reply with quote
Hi

So updated to 44048 and found the problem still existed. I could associate to 5G, but I just wouldn't obtain an IP address. 2.4G still worked fine.

I reset nvram and rebuilt the lot only to find i still had the same problem over 5G. At that stage, I figured it must be something to do with the 5G Antenna cos the syslog shows the authentication was fine so started changing antenna settings, and i got it WORKING! Woohoo!

Ath0
mode - Mixed
channel width VHT80
channel - 116
Extension channel UU (+6)
overlapping disabled
No advanced settings
ssid - dd-wrt
WPA2 Personal, AES
key renewal - 86400

Ath1
Mode - mixed
channel width - Full (20 MHz)
Channel - 9
Turbo QAM - disabled
ssid - dd-wrt
WPA2 Personal, AES
key renewal - 86400

Hopefully this helps someone else too!
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