Filter
Top Products
59
Performance Route Processor Installation and Configuration Guide
OL-11656-01
Additional Configuration and Maintenance Tasks
Bits in the Software Configuration Register
As described in the “Boot Field Settings” section on page 57, the boot field setting
determines the source of the Cisco IOS software image that is used to boot the
router. A detailed description of the bit values for the boot field and their
associated action or filename is given in Table 10
The remaining bits in the software configuration register are described following:
Bit 8 of the software configuration register controls the console Break key. Setting
bit 8 causes the system to ignore the console Break key. This is the factory default.
Conversely, clearing bit 8 causes the system to interpret a Break keystroke as a
command to halt normal system operation and force the system into ROM monitor
Table 10 Default Boot Filenames
Action/Filename Bit 3 Bit 2 Bit 1 Bit 0
Bootstrap mode 0 0 0 0
Default software 0 0 0 1
cisco2-grp or cisco2-prp 0 0 1 0
cisco3-grp or cisco3-prp 0 0 1 1
cisco4-grp or cisco4-prp 0 1 0 0
cisco5-grp or cisco5-prp 0 1 0 1
cisco6-grp or cisco6-prp 0 1 1 0
cisco7-grp or cisco7-prp 0 1 1 1
cisco10-grp or cisco10-prp 1 0 0 0
cisco11-grp or cisco11-prp 1 0 0 1
cisco12-grp or cisco12-prp 1 0 1 0
cisco13-grp or cisco13-prp 1 0 1 1
cisco14-grp or cisco14-prp 1 1 0 0
cisco15-grp or cisco15-prp 1 1 0 1
cisco16-grp or cisco16-prp 1 1 1 0
cisco17-grp or cisco17-prp 1 1 1 1