Cisco Systems 7600 manual Configuring the Software Configuration Register, 2-22

Chapter 2 Basic MSFC Software Configuration

Performing Other Configuration Tasks

Configuring the Software Configuration Register

The software configuration register is a 16-bit register in NVRAM that you use to define specific system parameters.You can set or change the contents of this register to accomplish these tasks:

•Define boot sources for the default Cisco IOS software, assigning them in the following order of precedence:

–Flash memory card inserted in PCMCIA slot 0

–TFTP server in the network

–Flash memory SIMM (NVRAM) on the GRP

–Boot image stored within the operating environment, which you access by means of an appropriate form of the boot command issued at the ROM monitor prompt (rommon>)

•Define a default boot filename.

•Enable or disable the Break function.

•Control broadcast addresses.

•Set the console terminal baud rate.

•Recover a lost password.

•Force an automatic boot using a boot image.

•Read boot system commands from the configuration file stored in NVRAM.

The factory default value for the software configuration register is 0x0102. This value is a combination of the following: binary bit 8 = 0x0100 and binary bits 00 through 03 = 0x0002.

Caution To avoid confusion, note that valid software configuration register values may be combinations of settings. For example, the factory default value 0x0102 for the software configuration register is actually a composite of settings in this register.

	Cisco 7600 Optical Services Router Quick Software Configuration Guide
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