AP gets always a new IP address from DHCP server

Unanswered Question
May 15th, 2014
User Badges:


When an access points doesn't find a controller it gets always a new IP address from DHCP server.

Does anyone know, why?






  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Rasika Nayanajith Thu, 05/15/2014 - 06:37
User Badges:
  • Purple, 4500 points or more
  • Cisco Designated VIP,

    2017 Wireless

If it is a  Cisco IOS DHCP server, it is always do that & that is  normal.



**** Pls rate all useful responses ****

mlieber Thu, 05/15/2014 - 06:41
User Badges:

Hi Rasika,

thanks for your answer.

It is a Microsoft DHCP server.



kaaftab Mon, 05/19/2014 - 10:56
User Badges:
  • Silver, 250 points or more

you can fixed your ip in the DHCP server configuration in AD and that will resolve your issue .


**********Do rate Helpful posts*********


rmanga100 Mon, 08/04/2014 - 03:02
User Badges:



From what I know this is to do with DHCP option 60 and 43.Normally when APs request for IP address, DHCP Server also returns the management IP Address of WLC if the VCI matches.

If the VCI sent by the AP does not match with the one configured under DHCP for that particulart AP type, the DHCP will never return the WLC IP and hence AP can not find the controller.And the AP keeps sending DHCP Req and sometimes end up getting two IP addresses!

So may be you can check VCI on DHCP server for that AP model.

Let me know.





This Discussion



Trending Topics: Other Wireless Mobility

client could not be authenticated
Network Analysis Module (NAM) Products
Cisco 6500 nam
reason 440 driver failure
Cisco password cracker
Cisco Wireless mode