Power Source Monitoring - Cisco 12404 Installation And Configuration Manual

Chapter 1 Product Overview

Power Source Monitoring

OL-11636-01
LEDs
•
LEDs alert you to a condition in the router. The determination of a
–
critical, major, or minor alarm condition is designed into Cisco IOS
software running on your RP. Type the show commands sh gsr table and
sh env all to view the table of limits and current readings for the LEDs.
CSF MBus Status
•
Drivers are provided for MBus OK and FAIL indication.
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The 5V MBus power supply
•
Consists of a 100 W DC-DC converter.
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Alarm Status
•
– The Alarm output function consists of a group of LEDs and their
associated drivers connected to an output port on the alarm MBus
module. As directed by the software on the RP, the alarm MBus module
on the CSF card activates specific LEDs. The software which drives these
LEDs divides them into three levels, Critical, Major, and Minor. The
classification of a critical, major, or minor alarm is determined by
Cisco IOS software running on the RP. Each of the three LEDs is a dual
LED (for failure redundancy).
The OK/FAIL pair of LEDs indicate the status of the alarm MBus:
–
Green indicates that the alarm MBus module is operating properly.
Amber FAIL indicates that the alarm MBus has detected an error in itself
or with the MBus module.
The alarm MBus monitors the power supply and signals when there is a condition
outside the normal range of operation.
Power source voltage is not being provided to a component
•
A fault exist in the power source or PEM
•
A voltage monitor signal is outside the allowable range
•
The current monitor signal is outside the allowable range
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Cisco 12404 Internet Router Installation and Configuration Guide
Line Cards
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