ZyXEL Communications P-2608HWL-Dx Series - Manual (Page 339)

P-2608HWL-Dx Series User’s Guide
Chapter 27 Tools 339
27.7.4 Backup Configuration Using TFTP
The ZyXEL Device 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 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 Enter 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 five-
minute management idle timeout (default) when the file transfer is complete.
3 Launch the TFTP client on your computer and connect to the ZyXEL Device. Set the
transfer mode to binary before starting data transfer.
4 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 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.
27.7.5 TFTP Command Configuration Backup Example
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.