Netgear R6400 / AC1750

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<Kong>
DD-WRT Guru


Joined: 15 Dec 2010
Posts: 4339
Location: Germany

PostPosted: Sat Sep 03, 2016 14:19    Post subject: Reply with quote
mgw2011 wrote:
<Kong> wrote:
Tx error means either defect R6400


Hmmm... shouldn't in this case the router not work at all... device is brand new by the way.

Latest stats from wl0 (wl1 active but not in use):

Received (RX) 14392709 OK, no error
Transmitted (TX) 25548293 OK, 308 errors
Uptime now 1 day 23:58 hrs (I stopped automated daily reboots)

Quote:
or more likely your wireless clients driver is buggy.

This is a mix of Ubuntu/Kubuntu 16.04, Windows 7, several Android (CM and Sony, LG variants), and Linux on Samsung TV and a Squeezebox. I would not expect these to be all buggy...

I should have added that all devices have the same issue in case of error.

-mgw





Received (RX) 14392709 OK, no error
Transmitted (TX) 25548293 OK, 308 errors

This is not just normal but an extremely good error rate. Thus you don't have any issue at the moment which confirms, it is not the router or firmware, since you didn't change anything there.

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slidermike
DD-WRT Guru


Joined: 11 Nov 2013
Posts: 1487
Location: USA

PostPosted: Sat Sep 03, 2016 15:15    Post subject: Reply with quote
As Kong said, your latest packet counts vs. errors is WAY lower than your original post error to packet count.

When you posted the first values, you probably had some dirty WiFi for whatever reason.

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Router currently owned:
Netgear R7800 - Router
Netgear R7000 - AP mode

R7000 specific Tips/Tricks.
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=264152
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Sun Sep 04, 2016 8:28    Post subject: Reply with quote
Another outage detected this morning. Ethernet working. WLAN no connection possible from PC but currently 4 wireless client nodes connected to router. I am able to disconnect and reconnect devices (which show up in the routers wireless nodes under status > wireless.

    Uptime: 2 days, 18:52
    Received (RX) 100% 14880569 OK, no error
    Transmitted (TX) 100% 26008070 OK, 130430 errors


/var/log/syslog
PC connecting to router and obtaining IP address and then starting authentication:

    ...
    Sep 4 10:06:07 MW-T60 NetworkManager[1952]: <info> [1472976367.1213] sup-iface[0x18f2570,wls3]: config: set interface ap_scan to 1
    Sep 4 10:06:07 MW-T60 NetworkManager[1952]: <info> [1472976367.1512] device (wls3): supplicant interface state: inactive -> authenticating
    Sep 4 10:06:07 MW-T60 NetworkManager[1952]: <info> [1472976367.6219] device (wls3): supplicant interface state: authenticating -> associating
    Sep 4 10:06:07 MW-T60 NetworkManager[1952]: <info> [1472976367.6444] device (wls3): supplicant interface state: associating -> associated
    Sep 4 10:06:15 MW-T60 NetworkManager[1952]: <warn> [1472976375.7216] sup-iface[0x18f2570,wls3]: connection disconnected (reason 15)
    Sep 4 10:06:15 MW-T60 NetworkManager[1952]: <info> [1472976375.7244] device (wls3): supplicant interface state: associated -> disconnected
    Sep 4 10:06:15 MW-T60 NetworkManager[1952]: <info> [1472976375.8236] device (wls3): supplicant interface state: disconnected -> scanning
    Sep 4 10:06:19 MW-T60 NetworkManager[1952]: <info> [1472976379.2127] device (wls3): supplicant interface state: scanning -> authenticating
    Sep 4 10:06:19 MW-T60 NetworkManager[1952]: <info> [1472976379.7383] device (wls3): supplicant interface state: authenticating -> associating
    Sep 4 10:06:19 MW-T60 NetworkManager[1952]: <info> [1472976379.7463] device (wls3): supplicant interface state: associating -> associated
    Sep 4 10:06:27 MW-T60 NetworkManager[1952]: <warn> [1472976387.8195] sup-iface[0x18f2570,wls3]: connection disconnected (reason 15)
    ...and so on...
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Sun Sep 04, 2016 8:43    Post subject: Reply with quote
Since I found this somehow working during the last error I opened a telnet connection to the router issued a "wl radio off" and the "wl radio on" command followed by a reboot. Currently WLAN connections are back working on wl0 with wl1 active but unused.

Uptime 3 mins now with approx. 3 500 RX/TX with no error.
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Sun Sep 04, 2016 10:27    Post subject: Reply with quote
Down again just now after 1:27 hrs uptime. Same issue as before.

wl0 has again TX errors
    Received (RX) 100% 931159 OK, no error
    Transmitted (TX) 99% 1737254 OK, 15214 errors


Signing in with telnet via Ethernet:
Code:
root@DD-WRT:~# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 2C:30:33:D4:4B:3D 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1root@DD-WRT:~# ifconfig
          RX packets:950102 errors:0 dropped:0 overruns:0 frame:63394
          TX packets:1748142 errors:23272 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:146386459 (139.6 MiB)  TX bytes:2574511622 (2.3 GiB)
          Interrupt:163


Update: WLAN down again after switching radios off and power off/on and 12 mins router uptime.
    Received (RX) 100% 55215 OK, no error
    Transmitted (TX) 88% 50005 OK, 6721 errors
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Mon Sep 05, 2016 11:07    Post subject: Reply with quote
Update: After erase nvram, reboot and thus reconfiguration, the router is now running stable since 1 day and 3 mins.

Statistics show
    Received (RX) 100% 2774931 OK, 3 errors
    Transmitted (TX) 100% 4998690 OK, 6 errors


Same mix of Ubuntu, Android, W7 and Samsung TV devices.
Xeon2k8
DD-WRT Guru


Joined: 11 Feb 2016
Posts: 1288

PostPosted: Mon Sep 05, 2016 17:44    Post subject: Reply with quote
Have you issued erase nvram before and after upgrading? I mean before doing this last time erase nvram.
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Mon Sep 05, 2016 17:49    Post subject: Reply with quote
Xeon2k8 wrote:
Have you issued erase nvram before and after upgrading? I mean before doing this last time erase nvram.

Sure I did... Will move to next build with next error.
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Sun Sep 18, 2016 10:19    Post subject: Tried latest build but failed Reply with quote
Update - after the last reboot the router was up for 13 days and 45 mins before failure (errors described above).

I upgrade to the latest build - Firmware: DD-WRT v3.0-r30631 std (09/14/16). This build doesn't work for me - Ubuntu and W7 devices got a WLAN connection initially but no internet and no wireless connection to the router's web interface. Android devices worked intermittently. All devices stopped working at all now.
Xeon2k8
DD-WRT Guru


Joined: 11 Feb 2016
Posts: 1288

PostPosted: Sun Sep 18, 2016 11:53    Post subject: Re: Tried latest build but failed Reply with quote
mgw2011 wrote:
Update - after the last reboot the router was up for 13 days and 45 mins before failure (errors described above).

I upgrade to the latest build - Firmware: DD-WRT v3.0-r30631 std (09/14/16). This build doesn't work for me - Ubuntu and W7 devices got a WLAN connection initially but no internet and no wireless connection to the router's web interface. Android devices worked intermittently. All devices stopped working at all now.


30465 was a really good build from Kong for most people. You could give it a try. Have you also tried 29300 already?

http://ddwrt-kong.clonevince.fr
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Sun Sep 18, 2016 11:54    Post subject: Reply with quote
Update - moved to Firmware: DD-WRT v3.0-r30600M (09/09/16) working ok so far
Acumen
DD-WRT User


Joined: 15 Nov 2014
Posts: 221

PostPosted: Sun Sep 18, 2016 20:14    Post subject: Reply with quote
mgw2011 wrote:
Update - moved to Firmware: DD-WRT v3.0-r30600M (09/09/16) working ok so far

Just for your info, this version is unstable when using WPA2-Enterprise and the unbridged VAP (with network security) does not work on my R6400.

I am running the BS Build r30356 at the moment, which seems is pretty stable on my setup, but the unbridged VAP is an issue on this build too. Check the ticket(s) in my signature.

_________________
Netgear WNDR4300v1 DD-WRT v3.0 BS r29837 | Netgear R6400 DD-WRT v3.0 KB r33525M | Tickets: 5429
IPv4 & IPv6-PD | ProFTP & Samba to USB thumb | DNSMasq DHCPv6 | Pi-Hole on RasPi

Found a bug, report it so the it can be fixed: http://svn.dd-wrt.com/
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Tue Sep 20, 2016 17:04    Post subject: Reply with quote
@Acumen: Up and running since 2days+ w/ mostly standard settings and WPA2 Personal for the time being. VAP and bridge not in operation right now due to basic issues with the new router HW.
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Wed Sep 21, 2016 20:01    Post subject: Down again Reply with quote
Down again as of mid day today after 3 days of flawless working. Same behaviour as before ping times to the router increase from sub msec to 10+ sec. No internet via WLAN. Ethernet cable works fine.
mgw2011
DD-WRT User


Joined: 24 Sep 2011
Posts: 61

PostPosted: Wed Sep 21, 2016 20:51    Post subject: Reply with quote
I am aware that 29300 is a recommended build - unfortunately no version for the R6400 so I decided to move to 30560.

Changes to standard setup: router name; DHCP lease time 7200 , WLAN names, WLAN security WPA2 personal AES and PPoE setup, wireless channel fixed on 6 (neighbors at 2 and 1)

Router Model: Netgear R6400
Firmware Version: DD-WRT v3.0-r30560M (09/06/16)
Kernel Version: Linux 4.4.19 #97 SMP Mon Sep 5 23:59:47 CEST 2016 armv7l
Errors: none so far
Uptime: 13 mins

erase nvram before and after FW load
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