Chapter 22 Firmware and Configuration File Maintenance
ZyXEL NWA-3100 User’s Guide
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More commands that you may find in third party FTP clients are listed earlier in this chapter.
22.4.4 TFTP File Upload
The ZyXEL Device also supports the up/downloading of the firmware and the configuration
file using TFTP (Trivial File Transfer Protocol) over LAN. Although TFTP should work over
WAN as well, it is not recommended.
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:
1 Use telnet from your computer to connect to the ZyXEL Device and log in. Because
TFTP does not have any security checks, the ZyXEL Device records the IP address of
the telnet client and accepts TFTP requests only from this address.
2 Put the SMT in command interpreter (CI) mode by entering 8 in Menu 24 – System
Maintenance.
3 Enter the command “sys stdio 0” to disable the SMT timeout, so the TFTP transfer will
not be interrupted. Enter command “sys stdio 5” to restore the five-minute SMT timeout
(default) when the file transfer is complete.
4 Launch the TFTP client on your computer and connect to the ZyXEL Device. Set the
transfer mode to binary before starting data transfer.
5 Use the TFTP client (see the example below) to transfer files between the ZyXEL
Device and the computer. The file name for the firmware is “ras” and the configuration
file is “rom-0” (rom-zero, not capital o).
Note that the telnet connection must be active and the SMT 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 ZyXEL
Device to the computer, “put” the other way around, and “binary” to set binary transfer mode.
22.4.5 Example: TFTP Command
The following is an example TFTP command:
TFTP [-i] host put firmware.bin ras
where “i” specifies binary image transfer mode (use this mode when transferring binary files),
“host” is the ZyXEL 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 ZyXEL Device).
Commands that you may see in third party TFTP clients are listed earlier in this chapter.
22.4.6 Uploading Via Console Port
FTP or TFTP are the preferred methods for uploading firmware to your ZyXEL Device.
However, in the event of your network being down, uploading files is only possible with a
direct connection to your ZyXEL Device via the console port. Uploading files via the console
port under normal conditions is not recommended since FTP or TFTP is faster. Any serial
communications program should work fine; however, you must use the Xmodem protocol to
perform the download/upload.
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