D-Link AP: Deauth cycle

[MrFixit]

Hi,

I have a D-Link DAP-2553 and I keep getting the following messages in the log:

Apr 4 18:31:11 [Wireless] Group key update success:STA xx:xx:xx:xx:xx:xx
Apr 4 18:01:25 [Wireless] 4-way handshake success:STA xx:xx:xx:xx:xx:xx
Apr 4 18:01:25 [Wireless] Association Success:STA xx:xx:xx:xx:xx:xx
Apr 4 18:01:17 [Wireless] Deauth:STA xx:xx:xx:xx:xx:xx(reason 6)
Apr 4 18:01:17 [Wireless] Deauth:STA xx:xx:xx:xx:xx:xx(reason 6)
Apr 4 18:01:14 [Wireless] Deauth:Aging STA xx:xx:xx:xx:xx:xx
Apr 4 18:01:14 [Wireless] Group key update fail:STA xx:xx:xx:xx:xx:xx
Apr 4 17:44:16 [Wireless] 4-way handshake success:STA xx:xx:xx:xx:xx:xx
Apr 4 17:44:16 [Wireless] Association Success:STA xx:xx:xx:xx:xx:xx
Apr 4 17:44:09 [Wireless] Received Deauth:STA xx:xx:xx:xx:xx:xx(reason 1)
Apr 4 17:31:57 [Wireless] 4-way handshake success:STA xx:xx:xx:xx:xx:xx
Apr 4 17:31:57 [Wireless] Association Success:STA xx:xx:xx:xx:xx:xx
Apr 4 17:31:53 [Wireless] Deauth:STA xx:xx:xx:xx:xx:xx(reason 6)
Apr 4 17:31:53 [Wireless] Deauth:STA xx:xx:xx:xx:xx:xx(reason 6)
Apr 4 17:31:14 [Wireless] Deauth:Aging STA xx:xx:xx:xx:xx:xx
Apr 4 17:31:14 [Wireless] Group key update fail:STA xx:xx:xx:xx:xx:xx
Apr 4 17:26:32 [Wireless] 4-way handshake success:STA xx:xx:xx:xx:xx:xx
Apr 4 17:26:32 [Wireless] Association Success:STA xx:xx:xx:xx:xx:xx


where xx:xx:xx:xx:xx:xx is the MAC address of a BlackBerry Bold mobile phone.

As you can see, the association "ages", followed by a Deauth and a Group Update, which often fails but sometimes succeeds, and the cycle continues. Additionally, the WiFi access on the BlackBerry is very slow and often fails . Encryption is WPA2.

Any ideas anyone?

 

[MrFixit]

So, no one else is getting this then?

 

[jnadler]

Same problem. Same exact router model. Same BlackBerry Bold.

I haven't found a solution. There's a similar thread (also no resolution) on blackberry.com here:

http://supportforums.blackberry.com...fi-issue-with-Dlink-access-point/td-p/1000337

 

[MrFixit]

jnadler,

Thanks for confirming this issue is real - i was beginning to think it was only me . I will have a look at the thread.

Please post again if you find a solution.

 

[jdabbs]

The log (which you are interpreting backwards) shows rekeying activity approx 1800 seconds apart. Does the D-Link AP have a setting for a group key interval?

If so, I'd increase the interval to something like 6000 seconds and observe whether this has an impact on deauth frequency.

 

[MrFixit]

The log (which you are interpreting backwards) shows rekeying activity approx 1800 seconds apart. Does the D-Link AP have a setting for a group key interval?

If so, I'd increase the interval to something like 6000 seconds and observe whether this has an impact on deauth frequency.

jdabbs,

Yes, 1,800 secs is the Group Key Update interval and I can change this in the GUI. I will try 6,000 - many thanks for this tip - I hope it works

 

[MrFixit]

Finally Fixed!!

After opening a case with D-Link and getting them to properly test at 3rd Line Support they have provided a firmware update 1.25 that fixes this problem .

I guess they will make this publicly available shortly.

 

[stevech]

too typical of D-Link.

 

[MrFixit]

stevech,

What's to complain about? It only took 8 long months and wasted a lot of my time .

I have to say I am somewhat disappointed for what is supposed to be a business grade AP. BBs are very much a business tool so they should have tested with them.

That said, at least it is now fixed for me, and hopefully for everyone else soon.