Cisco Unified Wireless IP Phone 7921G Deployment Guide - SWS a.s.
Cisco Unified Wireless IP Phone 7921G Deployment Guide - SWS a.s.
Cisco Unified Wireless IP Phone 7921G Deployment Guide - SWS a.s.
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PEAP (MS-CHAPv2) requires that a user account be created on the authentication server.<br />
In release 1.2(1), the authentication server can be validated via importing a certificate into the <strong>Cisco</strong> <strong>Unified</strong> <strong>Wireless</strong> <strong>IP</strong> <strong>Phone</strong><br />
<strong>7921G</strong>.<br />
See the “Installing Certificates” section for more information.<br />
<strong>Cisco</strong> Centralized Key Management (CCKM)<br />
When using 802.1x type authentication, it is recommended to implement CCKM to enable fast roaming. 802.1x can introduce<br />
delay during roaming due to its requirement for full re-authentication. CCKM centralizes the key management and reduces the<br />
number of key exchanges. WPA and WPA2 introduce additional transient keys and can lengthen roaming time.<br />
When CCKM is utilized, roaming times can be reduced from 400-500 ms to less than 100 ms, where that transition time from<br />
one access point to another will not be audible to the user.<br />
As of the 1.3(4) release, the <strong>Cisco</strong> <strong>Unified</strong> <strong>Wireless</strong> <strong>IP</strong> <strong>Phone</strong> <strong>7921G</strong> supports CCKM with WPA2 (AES or TK<strong>IP</strong>), WPA (TK<strong>IP</strong><br />
or AES) and 802.1x (WEP) authentication.<br />
Authentication Key Management Encryption<br />
<strong>Cisco</strong> <strong>Unified</strong> <strong>Wireless</strong> <strong>IP</strong> <strong>Phone</strong> <strong>7921G</strong> Series <strong>Deployment</strong> <strong>Guide</strong> 18
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