Chapter 22 Firmware
To use TFTP, your computer must have both telnet and TFTP clients. To transfer the firmware and the configuration file, follow the procedure shown next.
1Use telnet from your computer to connect to the device and log in. Because TFTP does not have any security checks, the device records the IP address of the telnet client and accepts TFTP requests only from this address.
2Enter the command “sys stdio 0” to disable the management idle timeout, so the TFTP transfer will not be interrupted. Enter “command sys stdio 5” to restore the
3Launch the TFTP client on your computer and connect to the device. Set the transfer mode to binary before starting data transfer.
4Use the TFTP client (see the example below) to transfer files between the device and the computer. The file name for the firmware is “ras”.
Note that the telnet connection must be active and the device in CI mode before and during the TFTP transfer. For details on TFTP commands (see following example), please consult the documentation of your TFTP client program. For UNIX, use “get” to transfer from the device to the computer, “put” the other way around, and “binary” to set binary transfer mode.
TFTP Upload Command Example
The following is an example TFTP command:
tftp
Where “i” specifies binary image transfer mode (use this mode when transferring binary files), “host” is the device’s IP address, “put” transfers the file source on the computer (firmware.bin – name of the firmware on the computer) to the file destination on the remote host (ras - name of the firmware on the device).
Commands that you may see in
Using the FTP Commands to Back Up Configuration
1Launch the FTP client on your computer.
2Enter “open”, followed by a space and the IP address of your
3Press [ENTER] when prompted for a username.
4Enter your password as requested (the default is “1234”).
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