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CiscoXR 12406 Router Installation Guide
OL-13831-01
Chapter4 Troubleshooting the Instal lation
Troubleshooting the Processor Subsystem
Troubleshooting the Alarm Cards
The Cisco XR 12406 router uses two alarm cards to monitor the status of the
CSCs and SFCs and to indicate various alarm conditions. The alarm cards have
four primary functions:
Redundant generation of the DC MBus supply voltage for the line cards
Power system monitoring functions
OK/FAIL status indication of the CSCs and SFCs
Hardware implementation of the alarm system relay outputs a nd indicators
To help isolate a problem, you can visually check the LEDs on the alarm cards.
FABL
DNLD
The fabric downloader loads
FABL
STRT
The fabric downloader launches
FABL
RUN
The fabric downloader launch is complete
IOS
DNLD
The Cisco XR IOS software downloads
IOS
STRT
The Cisco XR IOS software launches
IOS
UP
The Cisco XR IOS software runs in DRAM
IOS
RUN
The line card is enabled and ready for use
1. The messages shown do not indicate a specific sequence.
2. Some messages appear only for a fraction of a second; others last several seconds.
Table4-6 Line Card Alphanumeric LED Display Messages (continued)
LED Display1Indications2