Cisco Systems XR 12406 Clock and Scheduler Card and Switch Fabric Card Status, Alarm Card Status

Chapter 1 Cisco XR 12406 Router Overview

Line Cards

The IOS XR software running on the route processor determines whether a given alarm condition is a critical, major, or minor alarm. Typing the show commands sh gsr table and sh env all will give you the table of limits and current readings for the LEDs.

Clock and Scheduler Card and Switch Fabric Card Status

The alarm card provides OK and FAIL indications for all clock and scheduler cards and switch fabric cards in the system. Redundant signals from the fabric cards are brought out to the LEDs on each alarm card. The alarm card does not control how these LEDs are used.

The MBus auxiliary power supply consists of a 50W DC-DC power supply and some current-sharing circuitry. Because the alarm card itself is powered by this supply, the on-board MBus module can report problems with the supply only when the redundant alarm card is in the chassis and providing MBus power.

Alarm Card Status

The ENABLED/FAIL pair of LEDs labeled MBUS indicate the status of the alarm card. The green ENABLED LED indicates that the MBus module on the alarm card is operating properly. The yellow FAIL LED indicates that the alarm card has detected an error in itself or with the MBus power supply.

Power Source Monitoring

The alarm card monitors the power modules and signals when there is a condition outside the normal range of operation. It discloses problems such as the following:

•Power source voltage is not being provided to a component

•A fault exists in the power source or power module

•Output voltage—Voltage monitor signal is outside the allowable range

•Output current—Current monitor signal is outside the allowable range

	Cisco XR 12406 Router Installation Guide
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