Verifying The Configuration Register Setting - Cisco Catalyst 4500 series Administration Manual

Chapter 3 Configuring the Switch for the First Time
Enter the configure terminal command at the EXEC mode prompt (#), as follows:
Step 2
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
Configure the configuration register to 0x102 as follows:
Step 3
Switch(config)# config-register 0x102
Set the contents of the configuration register by specifying the value command variable, where value is
a hexadecimal number preceded by 0x (see
Enter the end command to exit configuration mode. The new value settings are saved to memory;
Step 4
however, the new settings do not take effect until the system is rebooted.
Enter the show version EXEC command to display the configuration register value currently in effect;
Step 5
it is be used at the next reload. The value is displayed on the last line of the screen display, as shown in
this sample output:
Configuration register is 0x141 (will be 0x102 at next reload)
Step 6 Save your settings.
See the
that configuration register changes take effect only after the system reloads, such as when you enter a
reload command from the console.
Reboot the system. The new configuration register value takes effect with the next system boot up.
Step 7

Verifying the Configuration Register Setting

Enter the show version EXEC command to verify the current configuration register setting. In
ROMMON mode, enter the show version command to verify the configuration register setting.
To verify the configuration register setting for the switch, perform this task:
Command
Switch# show version
In this example, the show version command indicates that the current configuration register is set so that
the switch does not automatically load an operating system image. Instead, it enters ROMMON mode
and waits for you to enter ROM monitor commands.
Supervisor Engine 6-E and Supervisor Engine 6L-E
Switch# show version
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICES-M), Version
15.1(1)SG5.214, CISCO INTERNAL USE ONLY DEVTEST VERSION , synced to END_OF_FLO_ISP
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 17-Jan-12 23:07 by gsbuprod
ROM: 12.2(44r)SG(0.146)
Switch uptime is 1 minute
System returned to ROM by power-on
System image file is
"tftp://172.25.60.31/auto/gsg-sw/interim/flo_dsgs7/newest_image/ios/dev/cat4500e-entservic
es-mz"
OL-30933-01
"Saving the Running Configuration Settings to Your Start-Up File" section on page
Modifying the Supervisor Engine Startup Configuration
Table 3-3 on page
Purpose
Displays the configuration register setting.
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
3-27).
3-10. Note
3-29