Maintaining The T640 Host Subsystem; Maintaining The T640 Routing Engines - Juniper T640 Hardware Manual

Related
Documentation

Maintaining the T640 Host Subsystem

Purpose
Action
Related
Documentation

Maintaining the T640 Routing Engines

Purpose
Action
Copyright © 2013, Juniper Networks, Inc.
Rear Tray Seventh fan
Rear Tray Bottom fan
T640 Cooling System Description on page 75
Troubleshooting the T640 Cooling System on page 203
For optimum router performance, verify the condition of the host subsystem. The host
subsystem comprises a Routing Engine and up to two adjacent control boards 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
During normal operations:
The green host subsystem
The red host subsystem
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 256
Maintaining the T640 Routing Engines on page 183
Maintaining the T640 Control Boards on page 184
Replacing the T640 Host Subsystem Components on page 256
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
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:
Chapter 15: Maintaining T640 Router Hardware Components
OK 5190
OK 5190
and
HOST0 HOST1
LED is lit, look at the LCD to get more information about
52.
LED on the craft interface is lit.
OK
FAIL LED on the craft interface is not lit.
"T640 Craft Interface Description" on page
command to check the status of the Routing
Spinning at normal speed
Spinning at normal speed
) on the craft interface. If the red
52.
183