Cisco 12406 Installation And Configuration Manual page 191

Chapter 4 Troubleshooting the Installation
Table 4-1
Bit Number
07
08
09
10
11 and 12
13
14
15
1. The factory default value for the software configuration register is 0x0102. This value is a
2. OEM = original equipment manufacturer.
Table 4-2
booting the default Cisco IOS software image required to run the router. The
content of the boot field is specified as a binary number.
Table 4-2
Boot Field
00
01
OL-11497-03
Software Configuration Register Bit Meanings (continued)
Hexadecimal
1
Value
0x0080
0x0100
0x0200
0x0400
0x0800 to
0x1000
0x2000
0x4000
0x8000
combination of binary bit 8 = 0x0100 and binary bits 00 through 03 = 0x0002.
specifies the content of the boot field, which defines a source for
Boot Field and Meanings
Definition
On power up, the system remains at the ROM monitor prompt
( ) awaiting a user command to boot the system manually.
rommon>
On power up, the system automatically boots the first system image
found in the onboard Flash memory SIMM on the RP.
Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
Performing Other Configuration Tasks
Definition/Function
2
Enables the OEM bit
Disables the Break function
Uses a secondary bootstrap
Broadcasts Internet Protocol (IP) with all zeros
Defines the console baud rate (the default setting
is 9600 bps)
Boots the default Flash memory software if the
network boot fails
Excludes network numbers from IP broadcasts
Enables diagnostic messages and ignores the
contents of NVRAM
4-3