09-24-2010 05:43 AM
The issue is that the connect and immediately disconnect when the HT radio is enabled in my radio-g profile. Turning the HT radio off allows the Lenovo units to connect without problem.
The Thinkpad model is X100e which used a REALTEK RTL8192SE Mini PCI b/g/n adaptor. Driver version is the latest 1092.0.628.2010. for WinXP SP3.
I am having the problem on AP125s and AP105s.
My Controller OS version is 126.96.36.199
The WLAN is authenticated using PEAP/MSChapv2 and I think this has something to do with the connectivity problem as the Lenovos are able to connect to my Guest WLAN (Captive Portal) on the same APs.
Anyone solved a similar problem? :confused:
09-27-2010 12:11 PM
I opened a case with Aruba as colin suggested. The suggestion was made that I allow weak encryption on my SSID. This had no effect. The supplicants still connect and authenticate Ok and then immediately dissconnect. WinXP pops up a baloon just before disconnection saying "Connected to THE_WLAN(Unsecured)".
With further testing I have been able to determine that the issue is related to the use of AES encryption on the HT radio on the g side.
If I switch from WPA2/AES to WPA2/TKIP the supplicant connects and remains connected. Likewise, if I turn HT support off on the g radio, the client connects and remains connected using WPA2/AES
I duplicated my WLAN onto a non aruba access point. Same SSID, WPA2/AES, RADIUS Server etc. and the Lenovo supplicant connects without a problem.
The weird thing is that I have plenty of supplicants connecting to the HT-g radio. Its just these 180 or so Lenovos that are giving me grief.
I am currently awaiting further instructions from Aruba Support but if anyone else has suggestions, I would welcome them.
09-29-2010 07:41 AM
For reference my case is W-13914
Aruba OS 5.0.1
10-27-2010 12:04 AM
I just updated the drivers and did the "Station Handoff Assist" on Aruba as well....
Connectivity (ping test) is okie.
However, roaming is still a challenge, as the Clients are still very sticky and dun roam as fast as we expected...
11-24-2010 06:03 AM
As soon as I have any feedback other than "we're working on it" from Aruba Support I will post it here.