User guide

Chapter 6. Managing the Router 269
BootP Server
BootP is the Bootstrap Protocol server; it is installed on your PC with the DSL Tools software.
The BootP Server waits for incoming BootP broadcasts from BootP clients. The server looks up the MAC
addresses of the incoming BootP request in its database. If the MAC Address is found, the server normally
responds to the requestor with an IP address, the IP address of a TFTP server, and the name of a file to use for
booting.
Boot Code
The router provides a number of maintenance options for booting router software. You can boot from the routerÕs
FLASH memory, the most common option. Or, you can boot across the LAN network from a TFTP server,
perhaps to test a new level of router software before downloading it to FLASH memory. You can also boot
through a gateway to a WAN. The router allows you to set permanent network boot parameters used during
network booting, and it enables you to temporarily override those parameters. Finally, the router lets you define
the order in which the router boot procedures are performed. You can make changes to the boot procedures and
specify network boot parameters by entering manual boot mode.
This section provides Boot Mode information for models with configuration switches and models with a reset
button.
Manual Boot Menu
This information applies to most routers with configuration (DIP) switches.
Note: For routers with a reset button, see Recovering Kernels for Routers with a Reset Button, on page 278.
When the router is shipped, it is set for automatic boot from FLASH memory. If you wish to change the boot
options to allow for network booting, change the order of boot procedures, or perform a manual boot, you must
enter manual boot mode. Automatic and manual boot are controlled by Configuration Switches (on the back panel
of the router). The Options menu will be displayed if the routerÕs kernel is missing.
Access Manual Boot Mode
1. Set switch 6 down for Manual Boot mode.
2. Reboot the router by issuing the reboot command or by powering up the router.
The router then displays this menu of options:
1. Retry start-up
2. Boot from Flash memory
3. Boot from network
4. Boot from specific file
5. Configure boot system
6. Set date and time
7. Set console baud rate
8. Start extended diagnostics