Authentication Delays

You can experience an authentication delay due to different methods of security introduced while roaming.

The following table provides general guidelines for additional overhead. The specific performance may vary depending upon the access point you use and your network configuration.

Authentication Type	Association Delay	Description
WPA-PSK	< 100 ms	WPA-PSK often provides the optimal trade-off between security and performance.
EAP-FAST	500 ms	Frequent session timeouts can result in additional delays. For more information, refer to Encryption and Authentication.
LEAP
WPA-PEAP	Varies	The association delay caused by authentication varies based on the cipher strength (1024 bit or 2048 bit) and the depth of certificate chains.
EAP-TLS

All forms of authentication introduce considerable overhead. In particular, WPA-PEAP and EAP-TLS add the maximum overhead due to the time required for connecting to an authentication server. WPA2-PSK provides a considerable level of security while introducing minimum overhead.