Cisco Systems 78-16019-02 manual About the Software Configuration Register, Down

Chapter 3 Initial Configuration

About the Software Configuration Register

Example

The following example shows the privileged EXEC mode access status on the standby CPU switch module:

Switch# show redundancy summary

Redundant system information
----------------------------
Available Uptime:	15 hours, 27 minutes
sysUpTime (switchover clears):	15 hours, 27 minutes
Switchover Count:	0
Inter-CPU Communication State:	DOWN
Last Restart Reason:	Normal boot
Last Running Config sync:	never
Running Config sync status:	Disabled
Last Startup Config sync:	never
Startup Config sync status:	Disabled
This CPU is the Active CPU.
-------------------------------
Slot:	5
Time since CPU Initialized:	15 hours, 27 minutes
Image Version:	ONS-15530 Software (ONS15530-I-M), Release 12.1(10)EV
Image File:	ons15530-i-mz.evt
Software Redundancy State:	ACTIVE
Hardware State:	ACTIVE
Hardware Severity:	0
Peer CPU is the Standby CPU.
-------------------------------
Slot:	6
Time since CPU Initialized:	Unknown, peer CPU not responding
Image Version:	Unknown, peer CPU not responding
Image File (on sby-CPU):	Unknown, peer CPU not responding
Software Redundancy State:	DISABLED
Hardware State:	NOT PLUGGED IN
Hardware Severity:	0
Privilege Mode:	Enabled

About the Software Configuration Register

The Cisco ONS 15530 uses a 16-bit software configuration register to set specific system parameters. Settings for the software configuration register are written into NVRAM (nonvolatile random access memory).

You can change the software configuration register settings for the following reasons:

• Force the system into the ROM monitor or boot ROM

• Select a boot source and default boot filename

• Enable or disable the break function

• Control broadcast addresses

• Set the console terminal baud rate

• Load operating software from Flash memory

	Cisco ONS 15530 Configuration Guide and Command Reference
78-16019-02, Cisco IOS Release 12.2(18)SV2		3-25