This is shown in Figure 6-9.
Figure 6-9 Running Versus Startup Con?¬?guration
Configuration Register
The con?¬?guration register includes information specifying where to locate the Cisco IOS
Software image. You can examine the register with a show command, and you can change
the register value with the con?¬?g-register global con?¬?guration command. This topic
describes how to display and change the boot information in the con?¬?guration register.
Console
Configuration
IOS
RAM
Configuration
NVRAM
Setup Utility
show
running-config
show
startup-config
In RAM
RouterX#show running-config
Building configuration...
Current configuration:
!
Version 12.2
!
-- More --
RouterX#show startup-config
Using 1359 out of 32762 bytes
!
Version 12.2
!
-- More --
In NVRAM
440 Chapter 6: Network Environment Management
Before altering the con?¬?guration register, you should determine how the router is currently
loading the software image. The show version command will obtain the current
con?¬?guration register value. The last line of the display contains the con?¬?guration register
value. This is shown in Example 6-6.
You can change the default con?¬?guration register setting with the con?¬?g-register global
con?¬?guration command, as shown in Example 6-7.
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