We are using 7921 phones over our wireless network with A, B and G APs. The phone is set to Auto-A and the APs are broadcasting the SSID over A and G bands. We are seeing the phones pick the G band 90% of the time. We restricted the SSID to the A radios and the phones worked just fine, but this goes against the philosophy of use A and fail over to G. The phones are using WPA, CCKM (TKIP) and have firmware v.1.3.2 (the 1.3.3 firmware had issues authenticating against RADIUS, but 1.3.2 works). Any ideas?
Auto-A gives precedence to 5 GHz, but if unavailable it can switch to 2.4 GHz if available. There is no mechanism to re-scan the preferred band (5 GHz) after failing over to the less preferred band (2.4 GHz) at this time.
We recommend not to have 2.4 GHz signal for the voice ssid in areas where you want to use 5 GHz.
This may require separate WLC or the use of AP groups.
This is also documented in the 7921G Deployment Guide on page 50.
Did you ever figure out why the 1.3.3 firmware had issues with authenticating against RADIUS? I am experiencing the same issue, I have a 7921 running 1.0.4 and one running 1.3.3 with identical settings, but the 1.3.3 one has the auth failures.
The only problem is that 1.3.3 can't be downgraded back to anything prior to 1.3.3, so we're stuck with it...
There is nothing in 1.3(3) that I can think of that would impact authentication.
As far as roaming back to 5 GHz even though the voice ssid is still present on 2.4 GHz after failing over to 2.4 GHz when configured for Auto-a, we are planning to make some enhancements in this area for the 1.3(4) release, where it will scan both bands when in an auto mode and ensure it is on the preferred band when available.
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...