T4000 Alarm Messages Overview; Chassis Alarms - Juniper T4000 Hardware Manual

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T4000 Alarm Messages Overview

Chassis Alarms

Copyright © 2013, Juniper Networks, Inc.
See
T4000 Interface Module Reference
Power Supply LEDs
See "T4000 Six-Input DC Power Supply LEDs" on page
SIB LEDs
See "T4000 SIB LEDs" on page
SCG LEDs
See "T4000 SONET Clock Generators (SCGs) LEDs" on page
T4000 Hardware Component Overview on page 13
T4000 Troubleshooting Resources Overview on page 189
T4000 Alarm Messages Overview on page 191
When the Routing Engine detects an alarm condition, it lights the red or yellow alarm
LED on the craft interface as appropriate, trips the corresponding alarm relay contact,
and reports the cause of the alarm in the craft interface LCD.
To view a more detailed description of the alarm cause, issue the
CLI command:
user@host> show chassis alarms
1 alarms currently active
Alarm time
2011-12-08 21:05:15 PST
There are two classes of alarm messages:
Chassis Alarms on page 191
Interface Alarms on page 192
Chassis alarms Indicate a problem with a chassis component such as the cooling system
or power supplies. For more information about chassis alarms for each component, see
the following topics:
Troubleshooting the T4000 Cooling System on page 193
Troubleshooting the T4000 Craft Interface on page 196
Troubleshooting the T4000 Control Boards on page 197
Troubleshooting the T4000 FPCs on page 200
Troubleshooting the T4000 Host Subsystems on page 196
Troubleshooting the T4000 PICs on page 208
Troubleshooting the T4000 Power System on page 204
Chapter 18: Troubleshooting T4000 Router Hardware Components
.
48.
Class Description
Minor PEM 1 Absent
45.
51.
show chassis alarms
191