Technical data

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not specify the server address, a permanent or more recent override TFTP server address will be used, if
defined. Enter the
sync
command to commit the changes to FLASH memory.
WARNING:
After the kernel is copied, DO NOT power down the router until you have either issued a
sync
or
reboot
command to reboot the router. Otherwise the file is not written to FLASH memory.
8. After successfully copying the kernel to the router, set Configuration switch 2 or 6
UP
(if you have set it
down)
,
and reboot the router from FLASH memory via the
reboot
command. If you have altered the boot
procedure order in any way, reset to boot from FLASH memory first. Verify the software revision
number by issuing the
vers
command.
The system is now ready to be re-configured if necessary. The configuration files are unchanged by the
upgrade process.
Upgrading from the WAN Line
You can download a new version of the router software kernel using a TFTP server over the WAN line. The
following steps show you how to copy the software across the WAN line into the router’s FLASH memory.
WARNING:
Before performing this procedure, make sure that you can successfully access the software across
the WAN line via a TFTP server.
1. Copy router software KERNEL.F2K to a directory where it can be accessed by a TFTP server.
2. Log in to the Command Line Interface.
3. Copy the kernel into FLASH memory in the router typing the following commands:
copy tftp@xxx.xxx.xxx.xxx:sfilename kernel.f2k
sync
where
xxx.xxx.xxx.xxx
is the TFTP server IP address,
sfilename
is the server filename of the kernel and
KERNEL.F2K
is the name of the file. If you do not specify the server address, a permanent or more recent
override TFTP server address will be used, if defined.
WARNING:
After the kernel is copied, DO NOT power down the router until you have either issued a
sync
command or rebooted the router. Otherwise the file is not written to FLASH memory
.
4. After successfully copying the kernel to the router, reboot the router from FLASH memory via the
reboot
command. If a problem occurs during the upgrading, try the command again (do not reboot until you have
successfully copied the kernel.) If you have altered the boot procedure order in any way, be sure to reset to
boot from FLASH memory first. Verify the software revision number by issuing the
vers
command.
The system is now ready to be re-configured if necessary. The configuration files are unchanged by the
upgrade process.
Backup and Restore Configuration Files
To successfully save configuration files to the server, the files to be saved to the server must already exist, be
writeable by everyone. This restriction is part of the TFTP protocol. Also, all the files accessed by the TFTP
server must be under a single “root” directory. Multiple sub-directories can exist below this root, but they must be
created manually at the server. Neither the sub-directories nor the files can be created remotely.
Note:
Don’t forget to start the TFTP server from the
DSL Tools
menu.