Maintaining The T4000 Routing Engines - Juniper T4000 Hardware Manual

T4000 Core Router Hardware Guide
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Maintaining the T4000 Routing Engines

Purpose
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336
Each host subsystem comprises a Routing Engine and an adjacent control board
functioning together. To maintain the host subsystem:
Check the host subsystem LEDs (
normal operations:
The green host subsystem
The red host subsystem
If the red
HOST0 FAIL
Subsystems" on page 354
Check the LEDs on the control board. See
page 337.
Check the LEDs on the Routing Engine. See
on page 336
T4000 Craft Interface LEDs
T4000 LCC-CB Control Board LEDs on page 31
T4000 RE-C1800 LEDs on page 35
For optimum router performance, verify the condition of the Routing Engines.
On a regular basis:
Check the host subsystem LEDs (
normal operations:
The green host subsystem
The red host subsystem
If the red HOST0 FAIL
Subsystems" on page 354
Check the LEDs on the Routing Engine. During normal operation, the
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
Engines.
T4000 Craft Interface LEDs
T4000 RE-C1800 LEDs on page 35
and
HOST0 HOST1
LED on the craft interface is lit.
OK
LED on the craft interface is not lit.
FAIL
or LED is lit, see
HOST1 FAIL
"Maintaining the T4000 Control Boards" on
"Maintaining the T4000 Routing Engines"
and
HOST0 HOST1
OK LED on the craft interface is lit.
LED on the craft interface is not lit.
FAIL
or HOST1 FAIL LED is lit, see
command to check the status of the Routing
) on the craft interface. During
"Troubleshooting the T4000 Host
) on the craft interface. During
"Troubleshooting the T4000 Host
LED on
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