We have seen a number of Mac's getting put into exclusion because they are 
trying to use an IP address that has already been assigned to another device. 
at least that is the implication from looking at the WISM logs. Does anyone 
know how apple handles DHCP leasing? Especially when they are just being 
powered up? We speculate that they are trying to attach to their previous IP 
when in the world of large networks that IP could be handed out to another 
client but don't know for sure.

Bob Owens
Kansas State University
  ----- Original Message ----- 
  From: Hector J Rios 
  To: [email protected] 
  Sent: Thursday, August 27, 2009 3:58 PM
  Subject: [WIRELESS-LAN] Self-assigned IP on Macs...


  Have you guys run into this issue? We run Cisco's lightweight APs on WiSMs 
running code 5.2.193. Mac will associate to our APs but just won't obtain an IP 
address. In the end it assigns itself a self-assigned IP. We are seeing this on 
a lot of new MacBooks and MacBookPros running 10.5.8. If we associate the 
computer to an autonomous AP it works fine. If we boot it in safe mode it works 
fine too. Everything else it just fails. 

   

  Thanks, 

   

  Hector Rios

  Louisiana State University

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