Cisco Systems XR 12410 Installationshandbuch PDF herunterladen (Seite 158)

Chapter 4 Troubleshooting the Installation

Troubleshooting the Processor Subsystem

4-34

Cisco XR 12410 Router Installation Guide

OL-13832-01

Monitoring Critical, Major, and Minor Alarm Status

The alarms can warn of an overtemperature condition:

• On a component in the card cage

• A fan failure in a blower module

• An overcurrent condition in a power supply

• An out-of-tolerance voltage on one of the cards

The alarm LEDs are controlled by MBus software, which sets the threshold levels

for triggering the different stages of alarms.

The RP continuously polls the system for temperature, voltage, current, and fan

speed values. If a threshold value is exceeded, the RP sets the appropriate alarm

severity level on the alarm card which lights the corresponding LED, and

energizes the appropriate alarm display relays to activate any external audible or

visual alarms wired to the alarm display. The RP also logs a message about the

threshold violation on the system console.

Note If one or more of the alarm LEDs is on, check the system console for messages

describing the alarm.

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Cisco Systems XR 12410 Installationshandbuch Seite 158