Maintaining The T4000 Routing Engine And Control Boards; Maintaining The T4000 Host Subsystem; Maintaining The T4000 Routing Engines - Juniper T4000 Hardware Manual

T4000 Router Hardware Guide

Maintaining the T4000 Routing Engine and Control Boards

Maintaining the T4000 Host Subsystem

Purpose
Action
Related
Documentation

Maintaining the T4000 Routing Engines

Purpose
Action
182
Maintaining the T4000 Host Subsystem on page 182
Maintaining the T4000 Routing Engines on page 182
Maintaining the T4000 Control Boards on page 183
For optimum router performance, verify the condition of the Routing Engines and the
control boards.
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 196
Check the LEDs on the control board. See
page 183.
Check the LEDs on the Routing Engine. See
on page 182
T4000 Craft Interface LEDs on page 25
T4000 LCC-CB Control Board LEDs on page 37
T4000 RE-C1800 LEDs on page 41
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
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
LED on the craft interface is lit.
OK
LED on the craft interface is not lit.
FAIL
) on the craft interface. During
"Troubleshooting the T4000 Host
) on the craft interface. During
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