I am looking at deploying wireless at our site for voice, I have a couple of questions regarding Roaming between APs and best way to acheive fast roaming for latency senstive voice and other applications.
According to Cisco SRND for Voice over Wireless (
http://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/vowlan/41dg/vowlan_ch5.html), it is recommended:
"Fast roaming algorithms include Cisco Centralized Key Management (CCKM) and Proactive Key Caching (PKC). CCKM and PKC allow a WLAN client to roam to a new AP and re-establish a new session key—known as the Pairwise Transient Key (PTK)—between the client and AP without requiring a full IEEE 802.1X/EAP reauthentication to a AAA/RADIUS server."
But let's say I used WPA/PSK for my WLAN and just rely on mobility information in the controller to perform the handover, would this still be best practice.
I have actually tested both and they work quite well, neither drops a call or experiences any degragation in voice quality. I suppose I am asking for a real world perspective and if I should adhere to the SRND on this one?