Cisco Systems Cisco 12008 manual Router# conf term

Performing Other Configuration Tasks

If you set the boot field value to 0x2 through 0xF and a valid boot system command is stored in the configuration file, the system boots the Cisco IOS software image as directed by that value. If no boot system command is present in the configuration file, the system computes a default boot filename for booting from a network TFTP server.

In the following example, the software configuration register has been set to boot the system from the Flash memory SIMM on the RP and to ignore the Break function at the next reboot of the router:

Router# conf term

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

Router(config)# config-register 0x0102

Router(config)# boot system flash [filename]

Ctrl-z

Router#

With the configuration register thus set to “0x0102,” the system computes a default boot filename. In forming this filename, the system starts with cisco and appends the octal equivalent of the boot field number, a hyphen, and the processor type (grp or prp).

Table 4-5 lists the range of possible computed default filenames for booting over the network. Note, however, that a valid boot system configuration command stored in the NVRAM configuration file overrides any computed default filename for booting over the network.

4-40Cisco 12008 Gigabit Switch Router Installation and Configuration Guide