There are a couple ways to get fast roaming but you're best bet is to use WPA2 with AES encryption. Part of the WPA2 spec is reauths using a PMK instead of doing a full authentication. Keep in mind using a PMK is not a required part of the spec so your client doesn't have to support it.
Based on my understanding, my Linux client laptop can only support pre-authentication and PMK caching if an additional RADIUS server is setup.
Without RADIUS server, if I would like to configure my client to skip the authentication message and direct sending reassociation request to new AP while roaming, will this work for my Aironet AP and WLC? As I understand that WLC already contains the client entry in its database.
Yes, you will need a Radius server. The first time the client authenticates a full authentication will be done. Any time the client reassociates the auth will be handled by the PMK. The controller will cache the PMK but if you are using a security that doesn't have a fast roaming option the client will do a full authentication every time.
IntroductionHow to use the Wireless LAN Controller Configuration Analyzer (WLCCA)
Javier Contreras is a Senior Tech Lead for the Wireless Business Unit in Cisco, with over 2 decades of experi...
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(#)For this reason being that : - application that doesn't use multicast, sends one copy of each packet ( data unit of traffic at layer 3 ) to each client (" who seeks the traffic ).- application that does use multicast, sends ...
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...