Check three locations:
1.) On the client (packet capture to look for dhcp)
2.) On the controller/wcs/wism (check logs or perform pcap to look for dhcp)
3.) On dhcp server or watch the dhcp logs

Where do you and do you not see the expected DHCP exchanges? I would imagine 
the offer is not seen somewhere - presumably at the client, in which case you 
would need to investigate why it doesn't see it. If the client is getting the 
offer and not sending a request, I would think that would be good enough for 
Apple to get this figured out. Apple + wireless has been nothing but a 
disappointment the past 1-2 years. (And I say this as a "mac user".)

------------------
Ryan Holland
Network Engineer, Wireless
Office of the Chief Information Officer
The Ohio State University
614-292-9906   holland....@osu.edu

On Aug 21, 2010, at 6:52 PM, Nik Kumar wrote:

> Hi,
>  
> I was wondering if anyone out there is experiencing problems with MacBook Pro 
> laptops connecting to Wireless.
> We are using Cisco 1131AG lightweight AP’s and Cisco WCS/WISM.
> We have narrowed it down to be a specific Wireless card on the MacBook Pro.
> Broadcom BCM43xx 1.0 (5.10.131.16.1) & Broadcom BCM43xx 1.0 (5.10.91.27).
> We have tried WPA/TKIP, WEP and OPEN (no security) and it doesn’t work.
> Devices are showing authenticated on the Radius but they do not receive an IP 
> address.
> All it would say is could not connect and no IP address.
> We have tickets open with Apple and Cisco at the moment but any suggestons 
> would be appreciated.
>  
>  
>  
> Thanks,
>  
>  
> Nik Kumar
> Technical Support Specialist II
> Customer Support Center (OIT)
> <image001.gif>
>  
>  
> 
> Spam
> Not spam
> Forget previous vote
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