the two access point was configured and ( 30% overlap and more) when i tried to connect to the first access point (using wireless ip phone 7920 )its connect but when moving to the other AP its disconnect and having this message (authentication failed)
To support roaming for the 7920, you should probably look into setting up WDS. Have a look at the following;
Wireless Domain Services (WDS) act as a central authentication entity that supports a fast client rekey, rather than requiring a full RADIUS reauthentication each time the client roams. All access points and clients in a L2 domain 802.1X authenticate to a RADIUS server via the WDS that performs the role of 802.1X authenticator. Because all clients and access points authenticate via the WDS, the WDS is able to establish shared keys between itself and every other entity in the L2 domain. These shared keys enable CCKM fast secure roaming.One of the main purposes of WDS is to cache the user credentials as soon as the authentication server authenticates the client for the first time. On subsequent attempts, WDS authenticates the client on the basis of the cached information.
Registers all client devices in the subnetwork, establishes session keys for the client devices, and caches the client security credentials. When a client roams to another AP, the WDS device forwards the client security credentials to the new AP.
There was an issue in 1.08 firmware where the phone would send a null BSSID in reassociation packets. This was fixed in 1.09 (CSCeg33605). Encourage to use 3.01 firmware. It is mentioned in the firmware release notes to use 1.09 or higher when using AP fw version 12.3(4)JA or higher.
"Note 1: Firmware version 1.0(9) or higher is required to interoperate with the 12.3(4)JA or later IOS releases for the Cisco Aironet access points as well as for the Cisco Airespace and some 3rd party access points."
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...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...