Cisco XR 12404 - Manual (Page 24)

Chapter 1 Cisco XR 12404 Router Overview
Route Processor
1-10
Cisco XR 12404 Router Installation Guide
OL-13830-02
Caution The reset switch is not a mechanism for resetting the PRP and reloading the
Cisco IOS image. It is intended for software development use only. To prevent
system problems or loss of data, use the reset switch only on the advice of Cisco
service personnel.
Pressing the reset switch causes a nonmaskable interrupt (NMI) and places the
PRP in ROM monitor mode. When the PRP enters ROM monitor mode, its
behavior depends on the setting of the PRP software configuration register. For
example, if the boot field of the software configuration register is set to:
• 0x0—The PRP remains at the ROM monitor prompt (rommon>) and waits for
a user command to boot the system manually.
• 0x1—The system automatically boots the first Cisco IOS image found in
flash memory on the PRP.
PRP Alphanumeric Message Displays
The alphanumeric message displays are organized in two rows of four LED
characters each (
Figure 1-7 ).
Figure 1-7 Alphanumeric Message Displays—Partial Front Panel
The alphanumeric message displays show router status messages during the boot
process, and after the boot process is complete.
H10780
PROCESSOR
Upper alphanumeric
LED display (four digits)
Lower alphanumeric
LED display (four digits)
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