Virtual Wireless LAN Controller now supports AVC

Just upgraded my vWLC to 8.1.102 and now it supports AVC in Virtual Wireless LAN Controller in FlexConnect Mode.  The configuration is simple and the graph looks cool!

All you need to do is check this checkbox under your WLAN, this is the FlexConnect enabled WLAN for my home:

At the Monitor > Summary page you can see the top applications statistics:

You can see the detail if you click "View All" with some nice graphs~

Can Cisco Power Injector power up 2702 access point with 3x4?

For the latest Cisco 2700 series AP, if you power it up with standard 802.3af PoE switch, you can only achieve 3x3.

However if you power it up with 802.3at PoE switch, or using power cube, you can achieve the maximum performance 3x4.

How about power injectors?

The answer is yes for power injector 4 (AIR-PWRINJ4=), you will get 3x4 with power injector 4.  However you cannot get 3x4 with power injector 5 (AIR-PWRINJ5=), because power injector 5 is designed to provide 802.3af power only, you will only get 3x3 in this case

Enable World Mode

I have a -W 7921 wireless phone and -N 1242 autonomous wireless access point, it takes me some time to troubleshoot why it can't get connected. The answer is world mode. When you enable world mode, the AP adds channel carrier set information to its beacon. Client devices with world mode enabled receive the carrier set information and automatically adjust their settings.

Example
int dot11radio 0
world dot11d country-code US both

LWAPP Join-Request does not include valid certificate CERTIFICATE_PAYLOAD

If you get this message, 90% of chance you've got the wireless lan controller date wrong. Do a "show time" and you will suprise! I saw that I am in the year of 2029 when I do a "show time" on WLC. Fix it and it will work.

Erase Lightweight access points configuration

Once your lightweight Aironet access points register with the Cisco wireless lan controller, you can't change the ip address and controller information via console. So if you want to move the LWAP from one controller to the other, and if you have static address configured. You will have trouble. To clear the LWAP configuration, you can console to the access point and do the following:

1. Disconnect the ethernet connections
2. "clear lwapp private-config"
3. If you see the errors "ERROR!!! Command is disabled", you still have another way. Do a "debug lwapp console cli"
4. write erase
5. reload

Upgrading Cisco Aironet AP from autonomous to lightweight

If you are using 1130AG or 1240AG access points, congratulations you can upgrade from autonomous to lightweight.

For all IOS-based 1200 series modular access point (1200/1220 Cisco IOS Software Upgrade, 1210 and 1230 AP) platforms, it depends on the radio:

–if 802.11G, MP21G and MP31G are supported

–if 802.11A, RM21A and RM22A are supported

The 1200 series access points can be upgraded with any combination of supported radios: G only, A only, or both G and A.

Do a "show controllers" command to see which radio chipset you are using.

http://www.cisco.com/en/US/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html