Wireless Disconnects on Station Mode - No Beacons Received

RouterOS General
1

Hey everyone,

I have a mAP Lite that is configured to connect to another Wifi Network. For some reason, the wlan1 on the mAP Lite disconnects EXACTLY every 20 minutes!

 ---------------->15:34:12 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
 15:34:15 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
 15:34:16 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on 2437000, SSID <<Hidden>>
 15:34:16 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
 15:49:34 system,info,account user mornem logged out from 192.168.80.242 via winbox
---------------->15:54:15 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
 15:54:18 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
 15:54:19 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on 2412000, SSID <<Hidden>>
 15:54:19 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
 15:54:56 system,info,account user mornem logged in from 192.168.80.242 via winbox
 16:02:15 system,info,account user mornem logged out from 192.168.80.242 via winbox
 ---------------->16:14:14 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
 16:14:17 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
 16:14:17 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on 2462000, SSID <<Hidden>>
 16:14:18 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
 16:14:35 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -50
 16:14:41 dhcp,info dhcp assigned 192.168.80.241 to D6:C2:0D:A8:DB:FA 
 16:23:16 wireless,info D6:C2:0D:A8:DB:FA@Sparky: disconnected, received disassoc: sending station leaving (8)
 16:25:00 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -64
 16:30:16 wireless,info D6:C2:0D:A8:DB:FA@Sparky: disconnected, received disassoc: sending station leaving (8)
 16:32:07 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -59
----------------> 16:34:12 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
 16:34:12 wireless,info D6:C2:0D:A8:DB:FA@Sparky: disconnected, disabling
 16:34:15 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
 16:34:15 wireless,info 18:4B:0D:E3:F7:79@wlan1 established connection on 2462000, SSID <<Hidden>>
 16:34:16 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -70
 16:35:14 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
 16:38:57 system,info,account user mornem logged in from 192.168.80.242 via winbox
 16:41:45 wireless,info D6:C2:0D:A8:DB:FA@Sparky: disconnected, received disassoc: sending station leaving (8)
 16:44:31 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -44
 16:50:13 wireless,info 18:4B:0D:E3:F7:79@wlan1: lost connection, extensive data loss
 16:50:13 wireless,info D6:C2:0D:A8:DB:FA@Sparky: disconnected, disabling
 16:50:16 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
 16:50:16 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on 2412000, SSID <<Hidden>>
 16:50:17 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
 16:50:22 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -65
----------------> 16:54:13 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
 16:54:13 wireless,info D6:C2:0D:A8:DB:FA@Sparky: disconnected, disabling
 16:54:16 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
 16:54:17 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on 2437000, SSID <<Hidden>>
 16:54:18 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
 16:54:54 wireless,info D6:C2:0D:A8:DB:FA@Sparky: connected, signal strength -77

I’ve spent the whole day looking at other Forum posts, but nothing seems to help me investigate the issue.

Does anyone have some advice for me?

2

Switch channel on the AP if you can and ideally avoid 2.4 GHz entirely, way too much interference.

3

---------------->15:34:12 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
15:34:15 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
15:34:16 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on > 2437000> , SSID <>
15:34:16 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
---------------->15:54:15 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
15:54:18 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
15:54:19 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on > 2412000> , SSID <>
15:54:19 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
---------------->16:14:14 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
16:14:17 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
16:14:17 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on > 2462000> , SSID <>
16:14:18 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
----------------> 16:34:12 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
16:34:15 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
16:34:15 wireless,info 18:4B:0D:E3:F7:79@wlan1 established connection on > 2462000> , SSID <>
16:35:14 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
16:50:13 wireless,info 18:4B:0D:E3:F7:79@wlan1: lost connection, extensive data loss
16:50:16 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
16:50:16 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on > 2412000> , SSID <>
16:50:17 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66
----------------> 16:54:13 wireless,info 1C:3A:60:93:46:E9@wlan1: lost connection, no beacons received
16:54:16 dhcp,info dhcp-client on wlan1 lost IP address 10.10.25.66 - lease stopped locally
16:54:17 wireless,info 1C:3A:60:93:46:E9@wlan1 established connection on > 2437000> , SSID <>
16:54:18 dhcp,info dhcp-client on wlan1 got IP address 10.10.25.66

Maybe you can tell us more: the LOG is taken at what point? The AP or the mAP. I assume the mAP.
is this a setup with multiple AP’s with different frequencies for the same SSID (such setup=OK!) and the mAP roaming ?
Looks more like it is one AP that has the hablt of changing it’s channel every 20 minutes, without telling the clients.
I hate to see the mAP drop/lose it’s IP address.This probably also drops all open (TCP) sessions.

Just guessing: CAPsMAN channel reselect interval every 20 minutes ??? Should only be done when nobody needs connection? eg. 3:00AM every day.

4

I had the same issue. Please see http://forum.mikrotik.com/t/wlan-connection-loss-every-10-minutes/132482/7 for how I fixed it.