Wireless Access

Hi All

We have a site with 2 access points, SSID advertised on both, the traffic for this is tunnelled back to our controller.

For some reason a few times a day the clients are getting disconnected.

My colleague says when we put them on another SSID they dont drop.

What would cause this ? some logs from the controller for the AP in question

I am seeing the below

[reason_code STA has left and is deauthenticated]

[bssid d8:c7:c8:2e:03:71] [name TEST] [reason Denied: AP Ageout]

"My colleague says when we put them on another SSID they dont drop"..  Do you mean another SSID on the same access point?

The log messages are normal parts of roaming and client association/disassociation.  By themselves they do not suggest anything.

You have two access point, what is the current power on both bands of those access points?

Do you have "Drop Broadcast and Multicast" enabled on all Virtual APs?

Yes different SSID on same access point

Drop broadcast and multicast is currently disabled

AP1 - 5GHZ EIRP is 24  - Noise -91dBm

AP1 - 2.4GHZ EIRP is 19  - Noise -88dBm

AP2 - 5GHZ EIRP is 24 - Noise -88dBm

AP2 - 2.4GHZ EIRP is 19 - Noise -95dBm

Hi all,

I got exactly the same issue. I tried to activate "Drop broadcast and multicast" in the VAP profile but it doesn't change anything.

#show ap client trail-info <mac>
...
Deauth Reason
-------------
Reason                               Timestamp
------                               ---------
STA has left and is deauthenticated  Dec 18 20:52:20
STA has left and is deauthenticated  Dec 18 20:52:12
STA has left and is deauthenticated  Dec 18 20:51:58
STA has left and is deauthenticated  Dec 18 20:51:45
STA has left and is deauthenticated  Dec 18 20:51:44
STA has left and is deauthenticated  Dec 18 20:51:30
STA has left and is deauthenticated  Dec 18 20:51:16
STA has left and is deauthenticated  Dec 18 20:51:15
STA has left and is deauthenticated  Dec 18 20:51:02
STA has left and is deauthenticated  Dec 18 20:51:01
Num Deauths:10

Alerts
------
Reason                               Timestamp
------                               ---------
STA has left and is deauthenticated  Dec 18 20:52:20
STA has left and is deauthenticated  Dec 18 20:52:12
STA has left and is deauthenticated  Dec 18 20:51:58
STA has left and is deauthenticated  Dec 18 20:51:45
STA has left and is deauthenticated  Dec 18 20:51:44
STA has left and is deauthenticated  Dec 18 20:51:30
STA has left and is deauthenticated  Dec 18 20:51:16
STA has left and is deauthenticated  Dec 18 20:51:15
STA has left and is deauthenticated  Dec 18 20:51:02
STA has left and is deauthenticated  Dec 18 20:51:01
Num Alerts:10

Mobility Trail
--------------
BSSID              ESSID  AP-name       Timestamp
-----              -----  -------       ---------
04:bd:88:69:f2:82  voice  AP23  Dec 18 21:06:07
04:bd:88:69:f2:82  voice  AP23  Dec 18 20:52:20
04:bd:88:69:f2:82  voice  AP23  Dec 18 20:52:13
04:bd:88:69:df:82  voice  AP28  Dec 18 20:52:12
04:bd:88:69:df:82  voice  AP28  Dec 18 20:51:59
04:bd:88:69:f2:82  voice  AP23  Dec 18 20:51:58
04:bd:88:69:f2:82  voice  AP23  Dec 18 20:51:58
04:bd:88:69:d7:42  voice AP33  Dec 18 20:51:45
04:bd:88:69:d7:42  voice AP33  Dec 18 20:51:45
04:bd:88:69:d9:a2  voice AP35  Dec 18 20:51:44
Num Mobility Trails:10

If we look a little bit more into details we can found that the client is sending all the time deauth request to the AP (5 deauth request in less than one minute).

Dec 18 20:40:18  assoc-resp  04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success
Dec 18 20:40:18  assoc-req   00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      -
Dec 18 20:40:18  auth        04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success (seq num 0)
Dec 18 20:40:18  auth        00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  0       -
Dec 18 20:40:17  deauth      00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      STA has left and is deauthenticated (seq num 255)
Dec 18 20:40:15  assoc-resp  04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success
Dec 18 20:40:15  assoc-req   00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      -
Dec 18 20:40:15  auth        04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success (seq num 0)
Dec 18 20:40:15  auth        00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  0       -
Dec 18 20:40:06  deauth      00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      STA has left and is deauthenticated (seq num 403)
Dec 18 20:40:03  assoc-resp  04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success
Dec 18 20:40:03  assoc-req   00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      -
Dec 18 20:40:03  auth        04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success (seq num 0)
Dec 18 20:40:03  auth        00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  0       -
Dec 18 20:40:02  deauth      00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      STA has left and is deauthenticated (seq num 300)
Dec 18 20:40:01  assoc-resp  04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success
Dec 18 20:40:01  assoc-req   00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      -
Dec 18 20:40:01  auth        04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success (seq num 0)
Dec 18 20:40:01  auth        00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  0       -
Dec 18 20:40:00  deauth      00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      STA has left and is deauthenticated (seq num 213)
Dec 18 20:39:57  assoc-resp  04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success
Dec 18 20:39:57  assoc-req   00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      -
Dec 18 20:39:57  auth        04:bd:88:69:f2:82  00:01:3e:3d:02:e1  04:bd:88:69:f2:82  15      Success (seq num 0)
Dec 18 20:39:57  auth        00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  0       -
Dec 18 20:39:56  deauth      00:01:3e:3d:02:e1  04:bd:88:69:f2:82  04:bd:88:69:f2:82  58      STA has left and is deauthenticated (seq num 95)

What could be the reason of that behavior?

Thanks in advance for your help and your suggestion,

Kind regards,

Geronimo

Geronimo,

There are many things that could cause your issue, but it might not be like those of the person who opened this thread.  If this is a crucial issue, please open a TAC case in parallel with this post.  You might also want to open a new post, as well, just in case your symptoms or setup are different from the person who opened this post.  Clients disconnecting is a generic issue.  The problems can be varying and different.