Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 15:29 Post subject: (Solved)Wifi Fails after flashing r48141 on EA6400
My EA6400 has been running fine for years with the same config until I flashed r48141 2 days ago. It's running as a AP in my office. No services being utilized on it not even DHCP or firewall. Just works as a wireless access point and switch. After flashing I notice my phone would no longer connect to it just fail with a auth error. Turned logging on but nothing shows in log. Flashed back to r45000 which was a know working build and the problem is still there. did a 30-30-30 reset. Wifi devices will connect until I turn off DHCP and connect it back to the rest of my network. Strange thing is at that point if I turn DHCP back off and disconnect from my other device running DHCP wifi wont go back to working until I do another rest. Tried flashing r42278 with same issues and now just flashed r48218 and same same. Wifi on the router can scan and see other devices with both wl0 and wl1. Anyone have some trouble shooting steps I could try? I spent the whole day yesterday flashing and resting and I'm at a total loss.
Last edited by otkaz on Sat Jan 29, 2022 2:55; edited 1 time in total
Joined: 08 May 2018 Posts: 14242 Location: Texas, USA
Posted: Fri Jan 28, 2022 17:06 Post subject:
The only thing that changed is likely the vlans and assign WAN port to switch being removed; Otherwise, the Wireless Access Point Wiki procedure should still work. I presume by 30-30-30, you mean 'nvram erase && reboot' since you do not do a 30-30-30 on Broadcom ARM devices. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 17:39 Post subject:
I'm currently on DD-WRT v3.0-r48218 (01/28/22) Linux 4.4.300 #5085 SMP Thu Jan 27 19:03:20 +07 2022 armv7l.
I went to commands on the admin tab and sent 'nvram erase', then 'reboot'. Plugged my desktop into LAN port 2. Changed the default login/password when it came up. Went to the setup tab and set WAN to disabled. Changed my local IP to 192.168.0.4. Set gateway and DNS to 192.168.0.1. Disabled DHCP hit apply and plugged my gateway(mikrotik router) into port 1. Left everything else where it was with a open network and I still can not connect to the network over wifi. My phone, laptop, and 3d printer will not connect. They just try over and over again.
Joined: 08 May 2018 Posts: 14242 Location: Texas, USA
Posted: Fri Jan 28, 2022 19:38 Post subject:
You mean other than trying to shortcut the process that works? The "simple version" does not work AFAIK. Just to reiterate again, regardless of the wiki:
Setup -> Basic Setup
WAN Connection Type: Disabled
Local IP Address in same subnet as upstream router
Subnet Mask (24 since it is now CIDR)
Gateway set to IP of upstream router (no need for DNS entry)
Enable NTP client, leave server field blank
Save
Setup -> Advanced Routing
Router mode
Save
Wireless -> Basic Settings
SSID
Sensitivity Range (I personally use 1350)
Save
Wireless -> Wireless Security
WPA2
CCMP-128(AES)
Password
Save
Services -> Services
Disable DNSMASQ and all associated settings
Disable ttraff
Enable SSH/Disable Telnet
Enable syslogd/klogd
Save
Security -> Firewall
Disable SPI Firewall, Save
Check Filter Multicast, Save (the check may "disappear")
Administration -> Management
Apply settings
If apply doesn't work and you have nothing after a few minutes, REBOOT.
Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 19:46 Post subject:
I was short cutting the process to keep it simple. Its still not connecting even after following all of those instructions step by step. Is there anyway to log wifi connections so I can see why they fail?
Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 19:50 Post subject:
I get that "it should work" but it's not and I'm looking for some more advanced trouble shooting steps. I've used ddwrt for years and run many different routers with it. I've never had an issue like this before. I've spent 2 days now fiddling with this and have gotten no where. It really doesn't make any sense.
Joined: 08 May 2018 Posts: 14242 Location: Texas, USA
Posted: Fri Jan 28, 2022 21:15 Post subject:
If your client devices were on previous wifi setup, you may have to "forget network" and connect fresh. Outside of that, I see no reasons for it not to work in recent / current build(s) outside of a bad config. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 21:36 Post subject:
egc wrote:
Do you use a different SSID and different channel from your main router?
WPA2 personal CCMP-128 AES for security?
yes, I normally use the same SSID on all of my access points. They're spaced out far enough that I don't really have much overlap but for trouble shooting I've been using a different ssid. I've even tried leaving the wifi settings as the default open network and I cant connect to that either as soon as I turn off DHCP and plug in the rest of the network. It will connect before that or I would have just wrote it off as a fried radio.
Joined: 08 May 2018 Posts: 14242 Location: Texas, USA
Posted: Fri Jan 28, 2022 21:42 Post subject:
The only other piece of this puzzle to look at is your MicroTik router and it's configuration(s). I don't see any commits in the past 10-20 days that would break this mode; at least nothing blatantly obvious. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net
Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 21:52 Post subject:
It works fine until I turn off DHCP which at that point it has to get an IP from a DHCP server connected to a LAN port. Other devices connected by LAN work fine. Could it somehow not be bridging the wifi clients to LAN?
Joined: 24 Feb 2009 Posts: 26 Location: Houston, TX
Posted: Fri Jan 28, 2022 21:56 Post subject:
kernel-panic69 wrote:
The only other piece of this puzzle to look at is your MicroTik router and it's configuration(s). I don't see any commits in the past 10-20 days that would break this mode; at least nothing blatantly obvious.
There is nothing on the mikrotik routers setup that could be causing wifi clients not to connect on this one AP. I have 3 other APs with identical settings (except different wifi channels) connected and all working fine. Two archer A7s and a Linksys E1200 v2.
Joined: 08 May 2018 Posts: 14242 Location: Texas, USA
Posted: Fri Jan 28, 2022 23:14 Post subject:
Please focus on using a single wired client to config the router and configure it completely *first*, *then* test it. If you have wireless clients connected to it while configuring, you are likely shooting yourself in the foot. It sounds as if your wireless clients are not releasing their old IP address or something to that effect, or we do not have the full picture here. The wireless interfaces should be in the bridging table if you did not change them from default to unbridged, which shouldn't be touched anyway. _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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Linux User #377467 counter.li.org / linuxcounter.net