See the below process of upgrading Aironet 1200.
Outline
This guide will outline the process for upgrading a Cisco Aironet 1200 series AP to the latest IOS. I will only be covering upgrading from one IOS release to another, if you’re running VxWorks, I suggest checking out Cisco’s official documentation which covers using their conversion tool before flashing the IOS
I will also run through the process of setting up WPA-PSK key-management authentication via the CLI.
I will also assume you have a basic understanding of using the CLI on Cisco IOS.
Obtain The Latest IOS
Firstly you will need to obtain the latest IOS release for your AP from Cisco.com (You’ll need a CCO account to do this) The latest release as of writing is 12.3(8)JED. Simply download the .tar archive and save it anywhere on your machine.
Setup A Simple TFTP Server
There are lots of TFTP servers that will probably suit your needs, however I will be using 3Coms’s 3CDaemon, which runs on Windows, which is straight forward enough to configure. The software can be obtained from here.
Once downloaded, run through the setup and then create a directory called ‘tftp’ at the root of your drive. Open the application and then choose ‘Configure TFTP Server’ and set your Upload/Download directory to the one we created earlier. Now copy across our .tar package to the ‘tftp’ directory.
You will also need to ensure TCP port 69 is open for communications to take place between the TFTP service and the AP.
Upgrade The IOS Through The CLI
Telnet to your Aironet 1200 AP via whichever Telnet client you prefer, using the statically assigned IP address, as below
telnet 192.168.0.2
We will now download and flash the IOS, as below
archive download-sw /overwrite /force-reload tftp://192.168.0.3/filename.tar
Ensure you substitute with the correct IP address of your TFTP server and the full filename of the .tar IOS release you downloaded previously.
At this point the IOS upgrade process will begin, which should take about 10 minutes.
Configure WPA-PSK Key-Management Authentication
Assuming the AP is configured to use the rather less secure WEP based encryption, we will re-configure via the CLI to use WPA-PSK.
After the reboot, telnet back into the AP and run the following to select our interface first
interface dot11Radio 0
Now we’ll set the encryption mode
encryption mode ciphers tkip
We will now configure the SSID, ensure you substitute the SSID name with the correct one for your environment as below
ssid test_ssid
Now to set the authentication method to open over shared.
authentication open
Now to set WPA key-mangement based authentication for our selected SSID
authentication key-management wpa
And now we’ll setup the pre-shared key
wpa-psk ascii pre-shared_key
That’s it, there are other options you may want to configure from either the CLI or the web interface, but this should be a good start point to get clients authenticating successfully by WPA-PSK.
Also see the below beautiful doc which helps you in upgrade.
http://www.cisco.com/en/US/products/hw/wireless/ps430/products_tech_note09186a008019fea0.shtml
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Regards,
Naidu.
