User guide

Maintaining the Cisco 2500 Series Access Server B-21
Virtual Configuration Register Settings
In the following example, the virtual configuration register is set to boot the access server
from Flash memory and to ignore Break at the next reboot of the access server:
router# conf term
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
config-register 0x102
boot system flash [ filename ]
^Z
router#
The server creates a default boot filename as part of the automatic configuration processes.
To form the boot filename, the server starts with cisco and links the octal equivalent of the
boot field number, a dash, and the processor-type name.
Note A boot system configuration command in the access server configuration in
NVRAM overrides the default boot filename.
cisco4-igs 0 1 0 0
cisco5-igs 0 1 0 1
cisco6-igs 0 1 1 0
cisco7-igs 0 1 1 1
cisco10-igs 1 0 0 0
cisco11-igs 1 0 0 1
cisco12-igs 1 0 1 0
cisco13-igs 1 0 1 1
cisco14-igs 1 1 0 0
cisco15-igs 1 1 0 1
cisco16-igs 1 1 1 0
cisco17-igs 1 1 1 1
Action or Filename Bit 3 Bit 2 Bit 1 Bit 0