If the red
HOST0 FAIL
or
HOST1 FAIL
LED is lit, see
“Troubleshooting the T4000 Host
Subsystems” on page 196
•
Check the LEDs on the Routing Engine. During normal operation, the
ONLINE
LED on
each Routing Engine is lit green, indicating that the Routing Engine is functional.
•
Check the LCD on the craft interface to view information about the router temperature
and the status of the Routing Engines.
•
Use the
show chassis routing-engine
command to check the status of the Routing
Engines.
Related
Documentation
T4000 Craft Interface LEDs on page 25
•
•
T4000 RE-C1800 LEDs on page 41
•
Maintaining the T4000 Host Subsystem on page 182
•
Maintaining the T4000 Control Boards on page 183
•
Troubleshooting the T4000 Routing Engines on page 199
•
Chassis Operational Mode Commands
Maintaining the T4000 Control Boards
Purpose
For optimum router performance, verify the condition of the control boards.
Action
On a regular basis:
•
Check the LEDs on the control board faceplate. During normal operations:
•
The green
OK
LED on the control board faceplate is lit.
•
The yellow
FAIL
LED on the control board faceplate is not lit. if the
FAIL
is lit, see
“Troubleshooting the T4000 Host Subsystems” on page 196
and
“Troubleshooting
the T4000 Control Boards” on page 197
.
•
Check the host subsystem LEDs (
HOST0
and
HOST1
) on the craft interface. During
normal operations:
•
The green host subsystem
OK
LED on the craft interface is lit.
•
The red host subsystem
FAIL
LED on the craft interface is not lit.
If the red
HOST0 FAIL
or
HOST1 FAIL
LED is lit, see
“Troubleshooting the T4000 Host
Subsystems” on page 196
and
“Troubleshooting the T4000 Control Boards” on
page 197
.
•
Use the
show chassis environment cb
command to check the status of the control
boards. During normal operations, the control board is
online
.
Related
Documentation
T4000 LCC-CB Control Board LEDs on page 37
•
•
Maintaining the T4000 Host Subsystem on page 182
183
Copyright © 2013, Juniper Networks, Inc.
Chapter 17: Maintaining T4000 Router Hardware Components
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