Basic Setup
D-Link Unified Wired and Wireless Access System
Oct. 2015 Page 568
D-Link UWS User Manual
Command Buttons
The page includes the following buttons:
• Submit—Updates the switch with the values you enter. To retain the new values across a power cycle,
you must perform a save (Tool > Save Changes).
• Refresh—Updates the page with the latest information.
• Clear—Resets the settings on the page to the default values.
WPA Key Type The key type is ASCII, which includes upper and lower case alphabetic letters, the
numeric digits, and special symbols such as @ and #.
WPA Key The WPA Key is the shared secret key for WPA Personal. Enter a string of at least 8
characters to a maximum of 63 characters. Acceptable characters include upper
and lower case alphabetic letters, the numeric digits, and special symbols such as
@ and #.
Bcast Key Refresh Rate Enter a value to set the interval at which the broadcast (group) key is refreshed for
clients associated to this VAP.
The valid range is 0-86400 seconds. A value of 0 indicates that the broadcast key is
not refreshed.
Additional Fields for WPA/WPA2 Enterprise
Pre-Authentication If you select WPA/WPA2 Enterprise, you can enable Pre-Authentication.
Click the Pre-Authentication check box if you want WPA2 wireless clients to send
pre-authentication packets. The pre-authentication information is relayed from the
access point the client is currently using to the target access point.
Enabling this feature can help speed up authentication for roaming clients who
connect to multiple access points. Only clients that connect by using WPA2 can use
this feature. It is not supported by the original WPA.
Pre-Authentication Limit Enter the number of pre-authentications that can be in progress simultaneously on
an AP. The limit prevents too much load on the RADIUS server. This does not
prevent the pre-authentication from being attempted again when the load is
lighter. A value of 0 represents no limit.
Key Caching Hold Time Enter the amount of minutes a PMK will be held by the AP. This applies to Pairwise
Master Keys (PMKs) generated by RADIUS, those that come from pre-
authentication, and those that are forwarded to the AP. Note that this time limit
can be overridden by RADIUS if the RADIUS server returns a longer time in the
Session-Timeout attribute for a particular user.
The valid values of this are from 1 – 1440 minutes. If you do not enter a value, APs
will not forward the PMK for the wireless client to other APs in case the client roams
to another AP.
Session Key Refresh Rate Enter a value to set the interval at which the AP will refresh session (unicast) keys
for each client associated to the VAP.
The valid range is 0-86400 seconds. A value of 0 indicates that the broadcast key is
not refreshed.
Table 332: WPA Security (Cont.)
Field Description