Cisco Systems RSP7000 manual Changing Settings

Reference Information

Table 5	Software Configuration Register Bit Meanings
Bit Number1		Hexadecimal	Meaning
00 to 03		0x0000 to 0x000F	Boot field (see Table 6)
06		0x0040	Causes system software to ignore NVRAM contents
07		0x0080	OEM bit enabled2
08		0x0100	Break disabled
09		0x0200	Use secondary bootstrap
10		0x0400	Internet Protocol (IP) broadcast with all zeros
11 to 12		0x0800 to 0x1000	Console line speed (default is 9600 baud)
13		0x2000	Boot default Flash software if network boot fails
14		0x4000	IP broadcasts do not have network numbers
15		0x8000	Enable diagnostic messages and ignore NVRAM contents

1.The factory default value for the configuration register is 0x0101. This value is a combination of the following: bit 8 = 0x0100 and bits 00 through 03 = 0x0001 (see Table 6).

2.OEM = original equipment manufacturer.

Table 6 Explanation of Boot Field (Software Configuration Register Bits 00 to 03)

Boot Field	Meaning
00	Stays at the system bootstrap prompt
01	Boots the first system image in onboard Flash memory
02 to 0F	Specifies a default netboot filename
	Enables boot system commands that override the default netboot filename

Changing Settings

To change the configuration register while running the system software, follow these steps:

Step 1 Enter the enable command and your password to enter privileged level, as follows:

Router> enable Password: router#

Step 2 At the privileged-level system prompt (router #), enter the configure terminal command. You will be prompted as shown in the following example:

Router# conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#

Step 3 To set the contents of the configuration register, enter the config-registervalue configuration command, where value is a hexadecimal number preceded by 0x (see Table 5), as in the following:

Router(config)# config-register 0xvalue

Step 4 Exit the configuration mode by entering Ctrl-Z. The new value settings will be saved to memory; however, the new settings do not take effect until the system software is reloaded by rebooting the router.

347000 Series Route Switch Processor (RSP7000) Installation and Configuration in the Cisco 7000 Series Routers