I have problems with link which is on 6 kilometers distance, 2,4 ghz, signal strength is -71 dbi, but every few minutes he is reconnecting. below is log:

00:04:33 wireless,info 00:80:48:41:7C:8D@wlan1: lost connection, no beacons
00:04:35 wireless,info 00:80:48:41:7C:8D@wlan1: failed to connect, join timeout
00:04:47 wireless,info 00:80:48:41:7C:8D@wlan1: failed to connect, got deauth: class 2 frame received (6)
00:04:59 wireless,info 00:80:48:41:7C:8D@wlan1: failed to connect, assoc failed: unspecified (1)
00:05:11 wireless,info 00:80:48:41:7C:8D@wlan1 established connection on 2467, SSID GLOBAL-LINK-PU-G
00:05:22 system,info,account user admin logged in from 10.10.0.33 via ftp
00:05:56 wireless,info 00:80:48:41:7C:8D@wlan1: lost connection, got deauth: authentication not valid (2)
00:05:58 wireless,info 00:80:48:41:7C:8D@wlan1 established connection on 2467, SSID GLOBAL-LINK-PU-G
00:06:45 system,info,account user admin logged out from 10.10.0.33 via ftp
00:14:11 wireless,info 00:80:48:41:7C:8D@wlan1: lost connection, got deauth: authentication not valid (2)
00:14:13 wireless,info 00:80:48:41:7C:8D@wlan1 established connection on 2467, SSID GLOBAL-LINK-PU-G

I have problems with link which is on 6 kilometers distance, 2,4 ghz, signal strength is -71 dbi, but every few minutes he is reconnecting. below is log:

00:04:33 wireless,info 00:80:48:41:7C:8D@wlan1: lost connection, no beacons
00:04:35 wireless,info 00:80:48:41:7C:8D@wlan1: failed to connect, join timeout
00:04:47 wireless,info 00:80:48:41:7C:8D@wlan1: failed to connect, got deauth: class 2 frame received (6)
00:04:59 wireless,info 00:80:48:41:7C:8D@wlan1: failed to connect, assoc failed: unspecified (1)
00:05:11 wireless,info 00:80:48:41:7C:8D@wlan1 established connection on 2467, SSID GLOBAL-LINK-PU-G
00:05:22 system,info,account user admin logged in from 10.10.0.33 via ftp
00:05:56 wireless,info 00:80:48:41:7C:8D@wlan1: lost connection, got deauth: authentication not valid (2)
00:05:58 wireless,info 00:80:48:41:7C:8D@wlan1 established connection on 2467, SSID GLOBAL-LINK-PU-G
00:06:45 system,info,account user admin logged out from 10.10.0.33 via ftp
00:14:11 wireless,info 00:80:48:41:7C:8D@wlan1: lost connection, got deauth: authentication not valid (2)
00:14:13 wireless,info 00:80:48:41:7C:8D@wlan1 established connection on 2467, SSID GLOBAL-LINK-PU-G

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Hai, friend

i think not enough power for retransmite, maybe channel overloaded.. try other channel or repointing, this day i has solved like yours, since tree days ago our client stop working to connect to my gateway. now is nice...and fine..and more power...

regards
Hasbullah.com
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I try on all 13 chanels, and on every of them i have same problem


08:07:14 wireless,info wlan2: data from unknown device 00:80:48:41:7C:D5, sent deauth
08:07:14 wireless,info wlan2: data from unknown device 00:80:48:41:7C:D5, sent deauth
08:07:38 wireless,info 00:80:48:41:7C:D5@wlan2: connected, wants WDS
08:16:40 wireless,info 00:80:48:41:7C:D5@wlan2: disconnected, reassociating
08:16:40 wireless,info wlan2: data from unknown device 00:80:48:41:7C:D5, sent deauth
08:17:04 wireless,info 00:80:48:41:7C:D5@wlan2: connected, wants WDS
08:35:38 wireless,info 00:80:48:41:7C:D5@wlan2: disconnected, reassociating
08:35:38 wireless,info wlan2: data from unknown device 00:80:48:41:7C:D5, sent deauth

check your wep, your probably need to switch both ends to open system.

i see this all the time with WIFI customers and even some MT to MT p2p wireless connections.

all of the above has no encryption set.

Sorry i dont have an answer, just noting that i've been seeing the same thing for a long time, across many different MT wifi boxes.

Try reset security-profile to default ...

security - profile is on default all the time

Did you try to "re-set" it to default ... I know is on default. Just set it again via telnet, ssh or new terminal (in winbox).

I experienced some similar log-entries and the connections from client to AP lost in most cases, sometimes they came back after some minutes.
After changing the wireless card from the Routerboard to another one the problems disappeard magically
Both cards are Atheros chipsets (one AR9223 and one AR9220).

what type of wds do you use? if it is dynamic , try staticaly configure wds links...

This problem can be for many reasons, interference, poor signal, chanel overload, acces list restriction, you can post your interface wireless config, also the config on the other side, thanks

yes, let's your config. screenshots in winbox are helpful as well.

Default authenticate is unchecked on one of the devices with no entry on the access-list or connect-list.

I've got the same problem on some distant links. Thus I have clear view between wireless points, not everheaded freqency and signal strength -65/-66 dBm, CCQ 99/95. Despite this I have my link disconnected one time in several days. I using Nstream, static WDS, no encryption, default security profile (non changed), Hw. Retries = 14, On Fail Retry Time = 1000, Disconnect Timeout = 00:00:10, Tx. Power = 20 dBm. Radio module R52H. RouterOS ver. 4.9.

I've got the same problem on some distant links. Thus I have clear view between wireless points, not everheaded freqency and signal strength -65/-66 dBm, CCQ 99/95. Despite this I have my link disconnected one time in several days. I using Nstream, static WDS, no encryption, default security profile (non changed), Hw. Retries = 14, On Fail Retry Time = 1000, Disconnect Timeout = 00:00:10, Tx. Power = 20 dBm. Radio module R52H. RouterOS ver. 4.9.

tell me your distance and ACK...

Distance - 2,3 km. You need no ACK when you using Nstream with disabled CSMA.