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Changing the Configuration Register Settings
This document describes the 16-bit configuration register in NVRAM and includes the following
sections:
•
Platforms Supported by This Document, page 1
•
About the Configuration Register, page 1
•
Changing the Configuration Register Settings, page 4
•
Displaying the Configuration Register Settings, page 5
•
Configuring the Console Line Speed (Cisco IOS CLI), page 5
Platforms Supported by This Document
Use this document with the following platforms:
•
Cisco 1800 series routers
•
Cisco 2800 series routers
•
Cisco 3800 series routers
About the Configuration Register
The router has a 16-bit configuration register in NVRAM. Each bit has value 1 (on or set) or value 0 (off
or clear), and each bit setting affects the router behavior upon the next reload power cycle.
You can use the configuration register to
•
Force the router to boot into the ROM monitor (bootstrap program)
•
Select a boot source and default boot filename
•
Enable or disable the Break function
•
Control broadcast addresses
•
Recover a lost password
•
Change the console line speed
Содержание 2800 Series
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