Cisco XR 12404 - Manual (Page 112)

Chapter 4 Troubleshooting the Installation
Troubleshooting the Processor Subsystem
4-14
Cisco XR 12404 Router Installation Guide
OL-13830-02
Troubleshooting the RP
When the router is powered on, the alphanumeric display on the RP indicate the
following (
Figure 4-3 ):
• Upper row—Indicates which RP software component is running. At the end
of a successful boot process, this display reads MSTR.
• Lower row—Indicates the current phase of the boot process. At the end of a
successful boot process, this display reads PRP.
Figure 4-3 RP Alphanumeric Display
Troubleshooting Using the RP Alphanumeric Display
You can use the alphanumeric display to isolate a problem with the RP. The two
rows on the alphanumeric display are powered separately:
• The upper row receives power from the DC-to-DC converters on the RP.
• The lower row is powered directly from the MBus on the RP through the
chassis backplane.
– If the lower row is not operating, the MBus module may be
malfunctioning.
– If the MBus module is operating, the lower row could be on even if the
RP failed to powered on.
H10780
PROCESSOR
Upper alphanumeric
LED display (four digits)
Lower alphanumeric
LED display (four digits)
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