Cisco Cisco Aironet 340 Access Point-RP-TNC Manual Técnica

Xmodem

1. 

Cyclic redundancy check (CRC) Xmodem

2. 

FTP

3. 

The first two methods have these disadvantages:

Because the speed over an Xmodem is slow compared to the 10 Mbps network connection over a
LAN port or 11 Mbps connection over a radio port of a bridge, the time that the Xmodem takes to
complete the image upgrade is excessive.

• 

These methods require access to the console port of the bridge. Therefore, the user cannot perform a
remote upgrade.

• 

For these reasons, the method typically recommended to upgrade the firmware of a Cisco 340 Series Bridge is
by FTP.

Complete these steps in order to perform the upgrade by FTP:

Download the desired firmware image from the Cisco Wireless Software Center.

1. 

Run the executable file (for example, BR340v8652.exe) to uncompress the image contained in the
file.

2. 

Copy the uncompressed image (BR340V865_2.450 in this example) into the directory of your FTP
server. You retrieve this image later in this procedure. For example, use your user directory, typically
/home/username in a UNIX directory.

3. 

Make a Telnet connection to the IP address of the Cisco Aironet 340 Bridge that you wish to upgrade.
Make sure that you have IP connectivity to the FTP server on which you placed the image. Complete
these steps in order to check the connectivity:

Go to the main menu.

a. 

Choose 5 − Diagnostics.

b. 

Choose 1 − Network.

c. 

Choose 3 − Ping.

d. 

Enter the IP address of your FTP server.

e. 

4. 

Press the = key to return to the main menu.

Choose 5 − Diagnostics.

a. 

Choose 7 − Load.

b. 

Choose 3 − Ftp.

c. 

The Telnet window appears, as shown here:

5.