Nortel 252, Configuration

Page: 193 / 345

Chapter 15 Firmware and configuration file maintenance 193
Nortel Business Secure Router 252 Configuration — Advanced
2 Use Telnet from your computer to connect to the Business Secure Router and
log on. Because TFTP does not have any security checks, the Business Secure
Router records the IP address of the Telnet client and accepts TFTP requests
only from this address.
3 Put the SMT in command interpreter (CI) mode by entering 8 in Menu 24 –
System Maintenance .
4 Enter the command sys stdio 0 to disable the management timeout, so the
TFTP transfer is not interrupted. Enter command sys stdio 5 to restore the
five-minute management timeout (default) when the file transfer is complete.
5
Launch the TFTP client on your computer and connect to the Business Secure
Router. Set the transfer mode to binary before starting data transfer.
6 Use the TFTP client (see the example below) to transfer files between the
Business Secure Router and the computer. The file name for the firmware is
ras.
Note that the telnet connection must be active and the Business Secure Router
must be in CI mode before and during the TFTP transfer. For details about TFTP
commands (see
“TFTP upload command example” on page 193 ), consult the
documentation of your TFTP client program. For UNIX, use get to transfer from
the Business Secure Router to the computer, put to transfer from the computer to
the Business Secure Router, and binary to set binary transfer mode.
TFTP upload command example
The following is an example TFTP command:
tftp [-i] host put firmware.bin ras
where “i” specifies binary image transfer mode (use this mode when transferring
binary files), “host” is the Business Secure Router’s IP address and “put” transfers
the file source on the computer (firmware.bin – name of the firmware on the
computer) to the file destination on the remote host (ras - name of the firmware on
the Business Secure Router).
Commands that appear in GUI-based TFTP clients are listed earlier in this
chapter.