ZyXEL 793H 사용자 가이드

P-793H User’s Guide

This chapter tells you how to back up and restore your configuration file as well as upload new 
firmware and a new configuration file.

Use the instructions in this chapter to change the ZyXEL Device’s configuration file or 
upgrade its firmware. After you configure your ZyXEL Device, you can backup the 
configuration file to a computer. That way if you later misconfigure the ZyXEL Device, you 
can upload the backed up configuration file to return to your previous settings. You can 
alternately upload the factory default configuration file if you want to return the ZyXEL 
Device to the original default settings. The firmware determines the ZyXEL Device’s 
available features and functionality. You can download new firmware releases from your 
nearest ZyXEL FTP site to use to upgrade your ZyXEL Device’s performance.

The configuration file (often called the romfile or rom-0) contains the factory default settings 
in the menus such as password, DHCP Setup, TCP/IP Setup, etc. It arrives from ZyXEL with a 
“rom” filename extension. Once you have customized the ZyXEL Device's settings, they can 
be saved back to your computer under a filename of your choosing.
ZyNOS (ZyXEL Network Operating System sometimes referred to as the “ras” file) is the 
system firmware and has a “bin” filename extension. With many FTP and TFTP clients, the 
filenames are similar to those seen next. 

ftp> put firmware.bin ras

This is a sample FTP session showing the transfer of the computer file " firmware.bin" to the 
ZyXEL Device.
ftp> get rom-0 config.cfg

This is a sample FTP session saving the current configuration to the computer file 
“config.cfg”.

If your (T)FTP client does not allow you to have a destination filename different than the 
source, you will need to rename them as the ZyXEL Device only recognizes “rom-0” and 
“ras”. Be sure you keep unaltered copies of both files for later use.