Cisco XR 12404 Installation Manual page 25

Chapter 1 Cisco XR 12404 Router Overview
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The alphanumeric message displays also provide information about different
levels of system operation, including the status of the PRP, router error messages,
and user-defined status and error messages
A list of all system and error messages appears in the Cisco IOS System Error
Note
Messages publication.
OL-13830-02
During the boot process, the message displays are controlled directly by the
MBus module.
After the boot process, the message displays are controlled by Cisco IOS XR
software (through the MBus).
Cisco XR 12404 Router Installation Guide
Route Processor
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