Troubleshooting The T4000 Host Subsystems; Table 85: Chassis Alarm Messages For Host Subsystems - Juniper T4000 Hardware Manual

T4000 Core Router Hardware Guide
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Troubleshooting the T4000 Host Subsystems

Problem
Solution
354
T4000 Cooling System Description on page 25
Replacing a T4000 Lower Front Fan Tray on page 265
Replacing a T4000 Upper Front Fan Tray on page 267
Replacing a T4000 Rear Fan Tray on page 269
Replacing a T4000 Front Air Filter on page 259
Replacing a T4000 Rear Air Filter on page 261
Description:
The following alarms and LEDs indicate a problem with a host subsystem control board
and Routing Engine:
The red host subsystem
The green host subsystem
A red alarm indicates that the host subsystem has been removed.
A yellow alarm indicates that the host subsystem has failed.
In Table 85 on page 354, the text in the column labeled "LCD Message" appears in the
display of the craft interface. The text in the column labeled "CLI Message" appears in
the output from the show chassis alarms

Table 85: Chassis Alarm Messages for Host Subsystems

Alarm Type LCD Message
Red
Host host-number Removed
Yellow
Host host-number Failure
To troubleshoot the host subsystems:
Check the LEDs on the faceplate of each control board and Routing Engine.
1.
Check the LEDs on the craft interface.
2.
If the red or
3. HOST0 FAIL
Use the
4. show chassis alarms
LED on the craft interface is lit.
FAIL
LED on the craft interface is not lit.
OK
command.
LED is lit on the craft interface, look at the LCD
HOST1 FAIL
command to check for alarms.
CLI Message
Host host-number Removed
Host host-number Failure
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