Cisco Systems XR 12406 manual shows the location of the alarm card LEDs

Chapter 5 Maintaining the Router

Removing and Installing a Clock and Scheduler Card, Switch Fabric Card, or Alarm Card

Verifying the Installation of Alarm Cards, Clock Scheduler Cards, and Switch Fabric Cards

To verify proper router operation after installing a replacement CSC or SFC, you can visually check the LEDs on the two alarm cards.

Figure 5-35 shows the location of the alarm card LEDs.

Figure 5-35 Alarm Card LEDs

MBUS	CSC		SFC		CRITICALMAJOR		MINOR
		FAIL
	ENABLED							66170
0	1	0	1	2			ALARM
1	2		3	4	5	6

1	MBus status LED	4	Critical alarm LED
2	CSC status LEDs (two)	5	Major alarm LED
3	SFC status LEDs (three)	6	Minor alarm LED

The following LED conditions are displayed when the system is operating properly:

Note Green = Enabled, amber = Fail

•The following green LEDs are normally on:

–The MBUS status LED

–Two CSC status LEDs

–Three SFC status LEDs

Cisco XR 12406 Router Installation Guide

OL-13831-01 5-57