User guide

270 Chapter 6. Managing the Router
To return to automatic boot mode
1. When you are ready to return to automatic boot mode, set switch 6 up.
2. Reboot by selecting options 1, 2, 3, or 4. If you reboot with switch 6 in the up position, the router will
boot router software automatically in the order and manner that you have specified.
Option 1: Retry Start-Up
If you are in Manual Boot mode, you can reboot the router in the boot procedure order by selecting option 1,
ÒRetry start-upÓ. The boot procedure order is either the one you have specified or the default order. The
default order is to boot from FLASH memory and then from the network (if defined). If you wish to boot
from the network and/or alter the boot procedure order, refer to Option 3: Boot from Network, on page 270.
Option 2: Boot from FLASH Memory
If you wish to perform a manual boot from FLASH memory, select option 2 from the main boot procedure
menu. The router will attempt to boot from FLASH memory. If the boot is unsuccessful, the router will return
to manual boot mode. (When you first receive the router, it will default to booting from FLASH during
power-up or automatic reboot.)
Option 3: Boot from Network
First, you need to define permanent network boot parameters using option 5. Then, select option 3 from the
main boot procedure menu to perform a manual boot from the network. The router will attempt to boot from
the network using the permanent network boot parameters you have specified.
If you have not defined network boot parameters, the router attempts to locate a BOOTP or RARP server on
the network.
BOOTP can be used to supply an IP address, a TFTP Server IP address, and a filename.
RARP is used to obtain an IP address, if it knows the MAC address. The router assumes that the RARP server
is also capable of performing the duties of a TFTP server and it will request the filename KERNEL.F2K or
the filename assigned when permanent network boot parameters are set.)
If a BOOTP or RARP server exists and is properly configured with the routerÕs MAC address, the router will
boot from the network. If unsuccessful, the router will return to manual boot mode.
Option 4: Boot from Specific File
You can temporarily override permanent network boot parameters when you perform a network boot. When
the router is in manual boot mode, select option 4, Òboot from specific fileÓ, from the main boot procedure
menu. Set the network boot parameters; the current default (permanent) parameters are as shown. After you
set the parameters, hit the return key and the router will boot from the network using the temporary boot
parameters. If the boot is unsuccessful, the router will return to manual boot mode.
Once you have installed router software on a network TFTP server, you can have the router boot across the LAN.
Network booting requires three parameters:
¥ the boot IP address
¥ the TFTP boot server address