Brocade Mobility RFS7000-GR Controller System Reference Guide (Supporting software release 4.1.0.0-040GR and later) - Manual (Page 144)

130 Brocade Mobility RFS7000-GR Controller System Reference Guide
53-1001944-01
Viewing and configuring switch WLANs
4
• 18191A1B1C1D1E1F
• 2021222324252627
• 28292A2B2C2D2E2F
8. Optionally select one of the following from within the Fast Roaming (8021x only) field.
9. Refer to the Status field for the current state of the requests made from applet. This field
displays error messages if something goes wrong in the transaction between the applet and
the switch.
10. Click OK to use the changes to the running configuration and close the dialog.
11. Click Cancel to close the dialog without committing updates to the running configuration.
Viewing WLAN statistics
The Statistics screen displays read-only statistics for each WLAN. Use this information to assess if
configuration changes are required to improve network performance. If a more detailed set of
WLAN statistics is required, select a WLAN from the table and click the Details button.
To view WLAN configuration details:
PMK Caching Select Pairwise Master Key (PMK) caching to store Pairwise Master Key derived
from 802.1x authentication between a client device and its authenticator. When a
client roams between devices, the client’s credentials no longer need to
completely reauthenticated (a process that can take up to 100 milliseconds). In
the instance of a voice session, the connection would likely be terminated if not
using a PMK. PMK cache entries are stored for a finite amount of time, as
configured on the wireless client.
Opportunistic Key
Caching Opportunistic Key Caching allows the switch to use a PMK derived with a client on
one Access Port with the same client when it roams over to another Access Port.
Upon roaming, the client does not have to conduct 802.1x authentication and can
start sending/receiving data sooner.
Pre-Authentication Selecting the Pre-Authentication option enables an associated MU to carry out an
802.1x authentication with another switch (or device) before it roams to it. This
enables the roaming client to send and receive data sooner by not having to
conduct an 802.1x authentication after roaming. This is only supported when
802.1x EAP authentication is enabled.