Roles and the Associations of Wireless Devices
Understanding Wireless Device Network Roles
9
Roles and the Associations of Wireless Devices
•
CCKM Fast Secure Roaming with a Central WDS is only available with TKIP encryption when the
universal workgroup bridge is enabled.
•
When a 2.4 GHz wireless device is configured as a universal workgroup bridge, it does not advertise
itself as a Cisco Compatible eXtensions (CCX) client; however, it does support CCX features. The
CCX program (Aironet extensions) delivers advanced WLAN system-level capabilities and
Cisco-specific WLAN innovations to third-party WI-FI-enabled laptops, WLAN adapter cards,
PDAs, WI-FI phones, and application-specific devices (ASDs).
Table 2
lists the features that are supported by CCX versions:
Table 2
CCX Version Feature Support
Feature
v1
v2
v3
v4
AP
WGB
WGB
Client
Security
WPA
1
X
X
X
X
X
X
IEEE 802.11i - WPA2
X
X
X
X
X
WEP
2
X
X
X
X
X
X
X
IEEE 802.1X
X
X
X
X
X
X
X
•
LEAP
3
X
X
X
X
X
X
X
•
EAP-FAST
4
X
X
X
X
X
Cisco TKIP
5
(encryption)
X
X
X
WPA: 802.1X + WPA TKIP
X
X
X
X
X
X
•
With LEAP
X
X
X
X
X
X
•
With EAP-FAST
X
X
X
X
X
IEEE 802.11i - WPA2: 802.1X +
AES
6
X
X
X
X
X
•
With LEAP
X
X
X
X
X
•
With EAP-FAST
X
X
X
X
X
CCKM
7
EAP-TLS
8
X
X
X
X
EAP-FAST Enhancements
X
X
X
X
Mobility
AP-assisted roaming
X
X
X
X
X
X
Fast 802.1X reauthentication via
CCKM, with LEAP
X
X
X
X
X
X
Fast 802.1X reauthentication via
CCKM, with EAP-FAST
X
X
X
X
X
MBSSID
9
X
X
Keep-Alive
X
X
X
Quality of Service and VLANs
Interoperability with APs that
support multiple SSIDs
10
and
VLANs
X
X
X
X
X
X
