Cisco Systems XR 12406 manual Troubleshooting the Alarm Cards

Chapter 4 Troubleshooting the Installation

		Troubleshooting the Processor Subsystem
Table 4-6	Line Card Alphanumeric LED Display Messages (continued)
LED Display1		Indications2
FABL		The fabric downloader loads
DNLD
FABL		The fabric downloader launches
STRT
FABL		The fabric downloader launch is complete
RUN
IOS		The Cisco XR IOS software downloads
DNLD
IOS		The Cisco XR IOS software launches
STRT
IOS		The Cisco XR IOS software runs in DRAM
UP
IOS		The line card is enabled and ready for use
RUN

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.

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 and indicators To help isolate a problem, you can visually check the LEDs on the alarm cards.

	Cisco XR 12406 Router Installation Guide
OL-13831-01		4-21