There can be many single points of failure when installing and
troubleshooting a WLAN. If access to an AP or bridge through the Ethernet port
is possible, then there is little need to troubleshoot the wired LAN. The
problem is most likely with the AP, bridge, or client.
Begin by checking
the firmware. Occasionally, a problem with the radio signal can be traced to a
problem in the firmware on the communicating devices. Cisco Aironet firmware
and driver software version updates are primarily used for problem resolution
and stability enhancement. Therefore, it is advisable to use the most recent
version of driver or firmware with the WLAN products. If a radio communication
problem is encountered with the WLAN, ensure that each component is running the
most current version of its firmware or driver.
From the System
Software Version Page, an administrator can verify the system software
details
. The description
of the information is shown in Figure
.
Use the Software Upgrade > HTTP Upgrade page to install a newer
version of IOS software, insert the correct path and filename of the new system
software tar file
. Go to Cisco.com
and download the newest system software version to a local drive. Click Browse,
locate the new system software file, and click Upload to copy the file to the
access point. The process is shown in Figure
.
From the
Software Upgrade > TFTP Upgrade page, enter the name or IP address of
the TFTP server in the TFTP File Server field that is storing the new software
. Next, insert
the correct path and filename of the new system image tar file. Go to Cisco.com
and download the newest system software version to a TFTP server. Enter the
TFTP server name and the filename of the system software file. Click Upload to
copy the new file to the access point. The process is shown in Figure
.
From a
VxWorks Cisco Services Page, it is possible to check the current system
and radio firmware as well as upgrade firmware through the browser or FTP
server
.
Using the
IOS CLI, image and configuration files can be managed via FTP, TFTP, and RCP.
First, check the system image using either command from the user or privileged
Exec mode.
AP>show version 
AP>show flash 
To upload or archive an image file, the GUI method is
recommended. To use the IOS CLI method, see the link below.
For the
client, loading new firmware is as easy as copying a file under Windows. From
the Aironet Client Utility (ACU) main window, click Load Firmware button. Then
select the path to the location of the new firmware image file, highlight the
file, and click Open
.