User guide

Maintaining the Cisco 2500 Series Access Server B-23
Copying to Flash Memory
Bit 13 determines the server response to a bootload failure. Setting bit 13 causes the server
to load operating software from ROM after five unsuccessful attempts to load a boot file
from the network. Clearing bit 13 causes the server to continue attempting to load a boot
file from the network indefinitely. By factory default, bit 13 is set to 1.
Enabling Booting from Flash Memory
To disable break and enable the boot system flash command, enter the config-register
command with the value shown in the following example:
router# config term
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
config-reg 0x2102
^Z
router#
Copying to Flash Memory
Copying a new image to Flash memory might be required whenever a new image or
maintenance release becomes available. To copy a new image into Flash memory (write to
Flash), you must first reboot from ROM and then copy the new image into Flash memory.
You cannot copy a new image into Flash memory while the system is running from Flash
memory. Use the copy tftp flash command for the copy procedure.
Following is the sample output for reloading the access server and then copying a file
(called IJ09140Z) to Flash memory from a TFTP server (called server1):
router# configure terminal
Enter configuration commands, one per line.
Edit with DELETE, CTRL/W, and CTRL/U; end with CTRL/Z
config-reg 0x2101
^Z
The configuration register setting 0x2101 tells the system to boot from ROM, but does not
reset the break disable or check for a default netboot filename.
router# reload
...
router(boot)# copy tftp flash