Chapter 22 Firmware and Configuration File Maintenance
ZyXEL NWA-3100 User’s Guide
208
To use TFTP, your computer must have both telnet and TFTP clients. To backup 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 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 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 and “binary” to set binary transfer mode.
22.2.4 Example: TFTP Command
The following is an example TFTP command:
TFTP [-i] host get rom-0 config.rom
where “i” specifies binary image transfer mode (use this mode when transferring binary files),
“host” is the ZyXEL Device IP address, “get” transfers the file source on the ZyXEL Device
(rom-0 name of the configuration file on the ZyXEL Device) to the file destination on the
computer and renames it config.rom.
The following table describes some of the fields that you may see in third party TFTP clients.
Table 78 General Commands for Third Party TFTP Clients
COMMAND DESCRIPTION
Host Enter the IP address of the ZyXEL Device. 192.168.1.2 is the ZyXEL Device’s
default IP address when shipped.
Send/Fetch Use “Send” to upload the file to the ZyXEL Device and “Fetch” to back up the
file on your computer.
Local File Enter the path and name of the firmware file (*.bin extension) or configuration
file (*.rom extension) on your computer.
Remote File This is the filename on the ZyXEL Device. The filename for the firmware is
“ras” and for the configuration file, is “rom-0”.
Binary Transfer the file in binary mode.
Abort Stop transfer of the file.
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