Trouble with Ubiquiti SR5+RouterBOARD532A

RouterOS Wireless Networking
1

Hello,
We are encountering some strange activity with a set of RouterBOARD532A’s being used as wireless links with the Ubiquiti SR5 5ghz radio cards. The station side of the link will drop the connection with a log entry of:
wireless,info MAC@interface: Lost connection extensive data loss
Every time an amout of traffic goes to or through the link this happens. Now if I open a winbox session to it It will die each time, with telnet I sometimes have enough time to play with it. Here is what the log on the bridge looks like:

If you have any ideas, or require more information please respond to this post or shoot me an email at info@tnet.biz

[admin@MikroTik] > log p print
oct/25 20:34:11 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K[K
oct/25 20:34:17 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, [K[K
reassociating [K[K
oct/25 20:34:17 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth [K[K
oct/25 20:34:17 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth [K[K
oct/25 20:34:17 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth [K[K
oct/25 20:34:17 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth [K[K
oct/25 20:34:17 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth [K[K
oct/25 20:34:41 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K[K
oct/25 20:37:34 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, [K[K
reassociating [K[K
oct/25 20:37:34 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth (5 events suppressed) [K[K
oct/25 20:37:58 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K[K
oct/25 20:38:03 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, [K[K
reassociating [K[K
oct/25 20:38:03 wireless,info wlan1: data from unknown device [K[K
00:15:6D:54:15:2C, sent deauth [K[K
– [Q quit|D dump|down][K
oct/25 20:38:27 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:02:48 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:02:48 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:02:48 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:03:12 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:03:17 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:03:18 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:03:42 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:03:58 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:03:58 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:03:58 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:04:22 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:04:27 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:04:27 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:04:51 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:04:57 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:04:57 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
– [Q quit|D dump|up|down][K
sent deauth [K
06:05:21 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:14:18 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:14:18 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:14:42 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
06:14:47 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
06:14:47 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
06:15:12 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
08:25:21 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
08:25:21 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
08:25:45 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
08:25:50 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
08:25:50 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
08:26:15 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
08:26:20 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
08:26:20 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
08:26:44 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:20:35 system,info,account user admin logged out from 10.101.0.6 via telnet [K
– [Q quit|D dump|up|down][K
12:41:10 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:41:10 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:41:34 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:41:43 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:41:43 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:41:43 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:42:07 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:42:12 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:42:12 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:42:12 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:42:36 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:42:58 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:42:58 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:42:58 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:43:22 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:43:27 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
– [Q quit|D dump|up|down][K
12:43:27 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:43:51 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:43:57 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:43:57 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:43:57 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:44:21 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:44:28 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:44:28 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:44:52 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:44:57 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:44:57 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:44:57 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:45:21 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:46:09 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:46:09 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:46:34 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
– [Q quit|D dump|up|down][K
12:46:39 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:46:39 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:46:49 system,info,account user admin logged in from 10.101.0.6 via winbox [K
12:47:03 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:58:13 system,info,account user admin logged in from 10.101.0.18 via winbox [K
12:58:25 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:58:25 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:58:49 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:58:55 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:58:55 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:58:55 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:59:19 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:59:24 wireless,info 00:15:6D:54:15:2C@wlan1: disconnected, reassociating [K
12:59:24 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:59:24 wireless,info wlan1: data from unknown device 00:15:6D:54:15:2C, [K
sent deauth [K
12:59:48 wireless,info 00:15:6D:54:15:2C@wlan1: connected, wants WDS [K
12:59:51 system,info,account user admin logged in from 10.1.0.46 via telnet [K
– [Q quit|D dump|up|down][K
13:00:02 system,info,account user admin logged out from 10.1.0.46 via telnet [K
13:00:12 system,info,account user admin logged in from 10.101.0.18 via telnet [K
13:00:16 system,info,account user admin logged out from 10.101.0.18 via [K
telnet [K
13:00:37 system,info,account user admin logged in from 10.101.0.18 via ssh [K
[K
[23B
[admin@MikroTik] > exit
no such command or directory (exit)
[23B
[admin@MikroTik] > quit

2

set the “ack-timeout” to dynamic on both ends and see if that helps. I have had these issues on occasions when the acknowledgement timeout was set too low. Changing it to dynamic on both ends always resolves the problem.

3

Hrm… Setting the ACK timeout of each end didnt seem to make a difference. It is still dying whenever you try and access it or send allot of traffic through it. Any winbox session opened to the station end will kill the link immediatly with a “lost connection due to extensive data loss” The links have clear sight of each other and the signal strength is at a 25db difference. I can’t see how it would act thios way only when traffic is directed through it.

4

check your ccq’s on the link, you may have a great signal, but there may also be alot of interference.

5

Great IDEA! I changed the freq down and work like a charm