Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

Table Of Contents
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Fast Layer 2 Roaming and Layer 3 Mobility
Configuring Fast Layer 2 Roaming for WPA/WPA2 with 802.1X
Figure 9-4. Enabling Pre-Authentication
6. Check the box for Pre-authentication.
Remember that pre-authentication messages do not cross subnetwork
(VLAN) boundaries, so the module receives them only from modules or
APs that assign the WLAN to the same subnetwork.
7. By default, PMK Caching and Opportunistic Key Caching are enabled and you
should leave them so.
PMK caching must be enabled for pre-authentication. (PMK caching
allows the module to store the station’s encryption key until the station
actually roams to it.) Although opportunistic key caching is optional for
pre-authentication, ProCurve Networking recommends that you accept
the default setting, which enables this option. Opportunistic key caching
facilitates fast roaming between RPs adopted by the same module.
8. Click the OK button.
9. Click the OK button in the Edit screen for the WLAN.
10. Remember to save your configuration.