Примечания к выпуску для Cisco Cisco Aironet 350 Wireless LAN Client Adapter
3
Release Notes for Cisco Aironet Client Adapter Firmware, 5.20.17
OL-4085-01
New and Changed Information
Cisco Aironet Software Requires Completion of Encryption Authorization Form
In order to access Cisco Aironet software from the Software Center on Cisco.com, you must fill out a
form to receive authorization to download encrypted software. Registered Cisco.com users are required
to fill out the form only once, but public users must do so once each session, each time software is
downloaded. A form is automatically created for public users. The form for registered Cisco.com users
is at the following URL:
form to receive authorization to download encrypted software. Registered Cisco.com users are required
to fill out the form only once, but public users must do so once each session, each time software is
downloaded. A form is automatically created for public users. The form for registered Cisco.com users
is at the following URL:
New and Changed Information
This section describes new and changed information for Cisco Aironet client adapter firmware version
5.20.17.
5.20.17.
Support for Fast Secure Roaming
Some applications that run on a client device may require fast roaming between access points. Voice
applications, for example, require seamless roaming to prevent delays and gaps in conversation. Support
for fast secure roaming is now available for LEAP-enabled clients in client adapter firmware version
5.20.17.
applications, for example, require seamless roaming to prevent delays and gaps in conversation. Support
for fast secure roaming is now available for LEAP-enabled clients in client adapter firmware version
5.20.17.
During normal operation, LEAP-enabled clients mutually authenticate with a new access point by
performing a complete LEAP authentication, including communication with the main RADIUS server.
However, when you configure your wireless LAN for fast secure roaming, LEAP-enabled clients
securely roam from one access point to another without the need to reauthenticate with the RADIUS
server. Using Cisco Centralized Key Management (CCKM), an access point that is configured for
wireless domain services (WDS) uses a fast rekeying technique that enables client devices to roam from
one access point to another in under 150 milliseconds (ms). Fast secure roaming ensures that there is no
perceptible delay in time-sensitive applications such as wireless Voice over IP (VoIP), enterprise
resource planning (ERP), or Citrix-based solutions.
performing a complete LEAP authentication, including communication with the main RADIUS server.
However, when you configure your wireless LAN for fast secure roaming, LEAP-enabled clients
securely roam from one access point to another without the need to reauthenticate with the RADIUS
server. Using Cisco Centralized Key Management (CCKM), an access point that is configured for
wireless domain services (WDS) uses a fast rekeying technique that enables client devices to roam from
one access point to another in under 150 milliseconds (ms). Fast secure roaming ensures that there is no
perceptible delay in time-sensitive applications such as wireless Voice over IP (VoIP), enterprise
resource planning (ERP), or Citrix-based solutions.
This feature does not need to be enabled on the client adapter; it is supported automatically in client
adapter firmware version 5.20.17. However, it must be enabled on the access point.
adapter firmware version 5.20.17. However, it must be enabled on the access point.
Note
IOS release 12.2(11)JA or greater is required to enable fast secure roaming on the access point. Refer to
the documentation for your access point for instructions on enabling this feature.
the documentation for your access point for instructions on enabling this feature.
Note
If the Microsoft 802.1X supplicant is installed on your computer, you must disable one or two Windows
parameters in order for this feature to operate correctly. Refer to the
parameters in order for this feature to operate correctly. Refer to the
“Enabling LEAP”
section of the
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows (version
OL-1394-06) for details.
OL-1394-06) for details.