Cisco Systems Cisco 3600 manual Configuration Register Settings

A P P E N D I X C

Configuration Register

This appendix describes the factory default settings of the configuration register, and procedures for changing those settings.

This appendix has the following sections:

•Configuration Register Settings, page C-1

•Changing Configuration Register Settings, page C-2

•Configuring the Boot Field, page C-4

•Enabling Booting from Flash Memory, page C-6

Configuration Register Settings

The router has a 16-bit configuration register in NVRAM. You can use the configuration register to perform the following tasks:

•Set and display the configuration register value

•Force the router into the ROM monitor (bootstrap program)

•Select a boot source and default boot filename

•Enable or disable the Break function

•Control broadcast addresses

•Load operating software from ROM

Table C-1describes each configuration register bit.

Cisco 3600 Series Routers Hardware Installation Guide

OL-2056-05 C-1