ZyXEL Communications Prestige 861H-G1, User Manual

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Prestige 861H User’s Guide
26-4 Firmware and Configuration File Maintenance
2. You have applied a filter in menu 3.1 (LAN) or in menu 11.5 (WAN) to block Telnet service.
3. The IP address in the Secured Client IP field in menu 24.11 does not match the client IP. If
it does not match, the Prestige will disconnect the Telnet session immediately.
4. You have an SMT console session running.
26.2.6 Backup Configuration Using TFTP
The Prestige 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 Prestige and log in. Because TFTP does not
have any security checks, the Prestige 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 Prestige. Set the transfer mode to
binary before starting data transfer.
5.
Use the TFTP client (see the example below) to transfer files between the Prestige 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.
26.2.7 TFTP Command 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 Prestige IP address, “get” transfers the file source on the Prestige (rom-0, name of
the configuration file on the Prestige) to the file destination on the computer and renames it
config.rom.
26.2.8 GUI-based TFTP Clients
The following table describes some of the fields that you may see in GUI-based TFTP clients.
Table 26-3 General Commands for GUI-based TFTP Clients
COMMAND DESCRIPTION
Host Enter the IP address of the Prestige. 192.168.1.1 is the Prestige’s default IP address when
shipped.