802.11r roaming on IAP

 

Advantages of 802.11r roaming over PMK and OKC:-
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  1. Pre-auth with multiple target APs before roaming
  2. Reserves WMM resources
  3. Supports OPEN, WPA2-PSK and WPA2-Enterprise
  4. No EAPoL key exchange while roaming

802.11r Fast Transition methods:-
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  1.   OTA - Over-the-Air  [Client to new AP]
  2.   4 packets are changed over the Wi-Fi channel
  3.   ODS - Over-the-Distributed System  [Through the old AP]
  4.   2 packets are exchanged over the Wi-Fi channel and 2 via Ethernet


Note:- This feature is supported only from Instant 4.0 and currently we do not support reserving WMM resources & ODS transition method on IAP or on aruba controller.

We need to also make sure client supports 802.11r to take full advantage of this feature.


rtaImage.jpg


rtaImage.jpg


Configuration from Webui:-
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Configuration from CLI:-
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rtaImage.jpg


Command output:-
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rtaImage.jpg


show ap pmkcache
show ap debug auth-trace-buf
show ap debug mgmt-frames

IAP advertised its 11r capability in beacon and probe response by sending Mobility Domain IE.

 

Sample packet-capture
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--
--rtaImage.jpg


Thank you.

 

Version History
Revision #:
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Last update:
‎06-27-2014 06:39 AM
Updated by:
 
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