ZyXEL Communications 480 - Manual (Page 135)

Prestige 480 ISDN Router
System Maintenance 11-17
11.6.3 TFTP Transfer
In addition to the direct console port connection, the Prestige supports the up/downloading of the
firmware and the configuration file using TFTP (Trivial File Transfer Protocol) over LAN. Even
though TFTP should work over WAN as well, it is not recommended because of the potential data
corruption problem.
To use TFTP, your workstation must have both telnet and TFTP clients. To transfer the firmware
and the configuration file, follow the procedure below:
Step 1. Use telnet from your workstation to connect to the Prestige and log in. Because TFTP
does not have any security check, the Prestige records the IP address of the telnet client
and accepts TFTP requests only from this address.
Step 2. Put the SMT in command interpreter (CI) mode by entering 8 in Menu 24 – System
Maintenance.
Step 3. Enter command “sys stdio 0” to disable SMT timeout, so the TFTP transfer will
not be interrupted.
Step 4. Launch TFTP client on your workstation and connect to the Prestige. Set the transfer
mode to binary before starting data transfer.
Step 5. Use the TFTP client to transfer files between the Prestige and the workstation. The file
name for the firmware is “ ras ” and for the configuration file, “rom-0” (rom-zero, not
capital o).
If you upload the firmware to the Prestige, it will reboot automatically when the file transfer is
completed.
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, please consult the documentation of your TFTP
client program. For UNIX, use “get” to transfer from the Prestige to the workstation, “put” the
other way around, and “binary” to set binary transfer mode.