Related
Documentation
T640 Chassis Description on page 15•
• T640 Component Serial Number Label Locations on page 486
• Replacing a T640 Craft Interface on page 265
T640 Alarm Messages Overview
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 on
the CIP, and reports the cause of the alarm in the craft interface LCD.
To view a more detailed description of the alarm cause, issue the show chassis alarms
CLI command:
user@host> show chassis alarms
There are two classes of alarm messages:chassis alarms and interface alarms:
•
Chassis Alarm Messages on page 466
•
Interface Alarm Messages on page 466
Chassis Alarm Messages
Chassis alarms indicate a problem with a chassis component such as the cooling system
or power supplies.
Interface Alarm Messages
Interface alarms Indicate a problem with a specific network interface.
In Table 92 on page 466, the text in the column labeled “LCD Message” appears in the
LCD. The text in the column labeled “CLI Message” appears in the output from the
show chassis alarms command.
Table 92: SONET/SDH Interface Alarm Messages
CLI MessageLCD Message
interface-name so-x/x/x - SONET bit error rate defectinterface-name so-x/x/x BERR-SD
interface-name so-x/x/x - SONET bit error rate faultinterface-name so-x/x/x BERR-SF
interface-name so-x/x/x - SONET line AISinterface-name so-x/x/x LAIS
interface-name so-x/x/x - SONET loss of frameinterface-name so-x/x/x LOF
interface-name so-x/x/x - SONET loss of lightinterface-name so-x/x/x LOL
interface-name so-x/x/x - SONET loss of pointerinterface-name so-x/x/x LOP
interface-name so-x/x/x - SONET loss of signalinterface-name so-x/x/x LOS
Copyright © 2017, Juniper Networks, Inc.466
T640 Core Router Hardware Guide
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