Cisco Systems 4500 Verifying the Configuration Register Setting

3-29
Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 3 Configuring the Switch for the First Time Modifying the Supervisor Engine Startup Configuration
Step 2 Enter the configure terminal command at the EXEC mode prompt (#), as follows:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
Step 3 Configure the configuration register to 0x102 as follows:
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 Table 3-3 on page 3-27).
Step 4 Enter the end command to exit configuration mode. The new value settings are saved to memory;
however, the new settings do not take effect until the system is rebooted.
Step 5 Enter the show version EXEC command to display the configuration register value currently in effect;
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 “Saving the Running Configuration Settings to Your Start-Up File” section on page 3-10. Note
that configuration register changes take effect only after the system reloads, such as when you enter a
reload command from the console.
Step 7 Reboot the system. The new configuration register value takes effect with the next system boot up.
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:
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
15.0(2)SG2-2.189, C
ISCO INTERNAL USE ONLY DEVTEST VERSION , synced to FLOGSBU8_122_56_SG_268
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Thu 19-Jan-12 00:55 by gsbuprod
Image text-base: 0x10000000, data-base: 0x136E0D6C
ROM: 12.2(44r)SG(0.146)
Darkside Revision 4, Jawa Revision 20, Tatooine Revision 141, Forerunner Revision 1.79
Switch uptime is 3 minutes
Command Purpose
Switch# show version Displays the configuration register setting.