ZyXEL p-2802h-i1 Guia Do Utilizador

 Chapter 23 Tools

P-2802H(W)(L)-I Series User’s Guide

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.

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 GUI-based TFTP clients.

to read about configurations that disallow TFTP and FTP 

over WAN.

Table 143   General Commands for GUI-based TFTP Clients

Host

Enter the IP address of the ZyXEL Device. 192.168.1.1 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.