Setting Software Configuration Settings - Cisco 12416 Installation And Configuration Manual

Chapter 4 System Startup and Basic Configuration
Note

Setting Software Configuration Settings

Note
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The boot field (Table 4-5) defines a source for booting a default Cisco IOS
software image required to run the router. The content of the boot field is specified
as a binary number.
Table 4-5 Boot Field—Software Configuration Register
Boot Field Meaning at Power-On
00 System remains at the ROM monitor prompt (
a user command to boot the system manually.
01 System automatically boots the first system image found in the
onboard flash memory SIMM on the RP.
02 to 0F System boots automatically from a default Cisco IOS software
image stored on a TFTP server in the network. This boot field
setting requires that the Ethernet port on the RP is configured and
operational. This setting also enables boot system commands that
override the default filename.
A Cisco 12010, Cisco 12410, or Cisco 12810 router is shipped with a boot image
in the boot flash, and a Cisco IOS image on a flash memory card.
The four low-order bits of the software configuration register (bits 3, 2, 1, and 0)
form a boot field that defines the source of a Cisco IOS software image for booting
the router.
You can set or change the contents of the boot field by entering the
config-register command at the global configuration mode prompt
[ ].
Milo(config)#
The factory default configuration register setting for an RP is 0x0102.
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
Configuring the Software Configuration Register
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