Maintaining The T640 Host Subsystem; Maintaining The T640 Routing Engines - Juniper T640 Hardware Manual
Core router
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Also See for T640:
- Hardware manual (580 pages) ,
- Quick start manual (52 pages) ,
- Replacing (31 pages)
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T640 Core Router Hardware Guide
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Maintaining the T640 Host Subsystem
Purpose
Action
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Documentation
Maintaining the T640 Routing Engines
Purpose
Action
148
Rear Tray Bottom fan
and
refer to fans in the upper front fan tray.
Top Left
Top Right
refer to fans in the lower front fan tray.
Right
fan tray.
T640 Cooling System Description on page 61
Troubleshooting the T640 Cooling System on page 168
Replacing a T640 Fan Tray on page 187
For optimum router performance, verify the condition of the host subsystem. The host
subsystem comprises a Routing Engine and up to two adjacent T-CBs functioning together.
On a regular basis:
Check the host subsystem LEDs (
or
HOST0 FAIL
HOST1 FAIL
the cause of the problem. For more information about the LEDs and the display, see
"T640 Craft Interface Description" on page 41.
Check the LCD on the craft interface to view information about the status of the Routing
Engines and control boards.
T640 Host Subsystem Description on page 32
Taking the T640 Host Subsystem Offline on page 198
Maintaining the T640 Routing Engines on page 148
Maintaining the T640 T-CBs on page 149
Replacing the T640 Host Subsystem Components on page 198
For optimum router performance, verify the condition of the Routing Engines.
On a regular basis:
Check the host subsystem LEDs on the craft interface. For more information about the
LEDs and the display, see "T640 Craft Interface Description" on page 41.
Check the LCD on the craft interface to view information about the router temperature
and the status of the Routing Engines.
Issue the
show chassis routing-engine
Engines. The output is similar to the following:
OK
or
Blower
Rear
and
) on the craft interface. If the red
HOST0
HOST1
LED is lit, look at the LCD to get more information about
command to check the status of the Routing
Copyright © 2010, Juniper Networks, Inc.
Spinning at normal speed
and
Bottom Left
Bottom
refers to the fans in the rear
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Table of Contents
Troubleshooting
