I am a German Student working on my Bachelors thesis for Wireless IP Telephony. I have some basic question: Do I need something like the WLSE Express for my environment to enable roaming between the different APs?
I have four Aironet 1200 APs but no wireless controller. (there is no money for that)
Re: Wireless Controller needed for VoIP over WLAN?
No, you don't need a WLAN controller with this ap type as the version you have is an autonomous / standalone image.
As far as authentication, you can use open, open+wep, shared key+wep, or AKM (WPA-PSK/WPA2-PSK).
Then for 802.1x types, either EAP-FAST, PEAP,EAP-TLS or LEAP can be used.
CCKM can be used for fast roaming with these 802.1x types, but with autonomous you must configure a WDS server, which can be an ap, and have the client serving aps register to the WDS, which points to the RADIUS server.
You can use local radius on the ap as well, but then only EAP-FAST or LEAP can be used.
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(#)For this reason being that : - application that doesn't use multicast, sends one copy of each packet ( data unit of traffic at layer 3 ) to each client (" who seeks the traffic ).- application that does use multicast, sends ...
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
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