Specifications

Chapter 6. Managing the Router 161
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 you have previously defined one.
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 process, 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
the router system to boot from FLASH memory first. Verify the software revision number by issuing the vers
command.
The router system is now ready to be re-configured if necessary. The configuration files are unchanged by the
upgrade process.