Specifications

Chapter 6. Managing the Router 155
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 155.
Option 2: Boot from FLASH Memory
To perform a manual boot from FLASH memory, select option 2 from the main boot procedure menu. The
router then attempts to boot from FLASH memory. If the boot is unsuccessful, the router returns to manual
boot mode. (When you first receive the router, it defaults to booting from FLASH during power-up or
automatic reboot.)
Option 3: Boot from Network
Before you can boot from the network, you must first define permanent network boot parameters using option
5. You can then select option 3 from the main boot procedure menu to perform a manual boot from the
network. The router attempts 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
boots from the network. If the boot is unsuccessful, the router returns to manual boot mode.
Option 4: Boot from Specific File
You can temporarily override permanent network boot parameters when you perform a network boot.
1. When the router is in manual boot mode, select option 4, Boot from specific file, from the
main boot procedure menu.
2. Set the network boot parameters; the current default (permanent) parameters are as shown.
3. After you set the parameters, hit the return key and the router boots from the network using the
temporary boot parameters. If the boot is unsuccessful, the router returns 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
¥ the router software filename on the server