Cisco 3600 Series Hardware Installation Guide

C-1
Cisco 3600 Series Routers Hardware Installation Guide
OL-2056-05
APPENDIX 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-1 describes each configuration register bit.

Cisco 3600 Series Specifications

General

Operating System	Cisco IOS
Series	3600
Type	Modular Router
Interfaces	Ethernet, Fast Ethernet, Serial, ISDN
Routing Protocols	RIP, OSPF, EIGRP, BGP, IS-IS
Redundancy	Optional redundant power supply
Management	CLI, SNMP, Telnet
Weight	Varies depending on the specific model
Power Supply	AC or DC, optional redundant power supply