Could you please indicate me the following information regarding the controller/phone settings:
- WLC OS version
- Phone 7921 Firmware
- WLC EAP settings (I suppose you're doing EAP Auth - 802.1X CCKM with WPA TKIP as stated by CCO BluePrint)
- WLC Radio settings
I ask you these info, if it's possible, because in our Voice WLAN we are experiencing some problems regarding the 7921G which sometimes disconnect itself from the WLAN obviously creating a big problem to the user...since it seems to happen everytime he's on the line
Cisco 7921 and 7925 have a great syslog feature. I would enable it and see what this tells us ... Go ahead and post your findings ...
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
thanks for your info...I've rechecked again and again the WLC configuration regarding the 11a radio configuration and all is fine...
The WLC OS and Phone FW are the same as you mentioned above...
I've done a Site Survey using the 7921G and two other IP phone (another 7921G and a 7925G) and all were experiencing randomly disconnections from the Wireless LAN...the 7925 had the best behaviour since it had been disconnected only a couple of times...the 7921G not...
On the Site-Survey we've seen that the 7921G had seen 2 out of 3 APs...sometimes all threes, the 7925G had seen always all 3APs...
the strange thing is that the 7921G Site-Survey has informed me that Proxy-ARP is not supported...but from WLC Release 5.0 Proxy-ARP is enabled by default and you couldn't disabled..morever the disconnections are happening less when on the phone there is an active call..
I'm start to thinking that these randomly disconnections are related to external interference...
check this for your client dropings: seen in config guides greater than V 5.0
When you enable hybrid-REAP local switching, the Learn Client IP Address check box is enabled by default. However, if the client is configured with Fortress Layer 2 encryption, the controller cannot learn the client IP address, and the controller periodically drops the client. Disable this option so that the controller maintains the client connection without waiting to learn the client IP address. The ability to disable this option is supported only with hybrid-REAP local switching; it is not supported with hybrid-REAP central switching.
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...