Replacing The T640 Routing Engine Or Control Board Components; Replacing The T640 Host Subsystem Components; Taking The T640 Host Subsystem Offline; Figure 142: Installing A Replacement Craft Interface - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
Related
Documentation

Replacing the T640 Routing Engine or Control Board Components

Replacing the T640 Host Subsystem Components

256
After you install the replacement craft interface, immediately reinstall the upper front
fan tray.

Figure 142: Installing a Replacement Craft Interface

T640 Craft Interface Description on page 52
T640 Craft Interface LCD and Navigation Buttons on page 53
T640 Preventing Electrostatic Discharge Damage on page 386
Replacing the T640 Host Subsystem Components on page 256
Replacing a T640 Standard Control Board or T-CB on page 259
Replacing a T640 LCC-CB on page 263
Replacing a T640 Routing Engine on page 265
Replacing a PC Card in a T640 Routing Engine on page 268
Replacing a DIMM Module in a T640 Routing Engine on page 270
Replacing a Solid-State Disk in a T640 RE-C1800 Routing Engine on page 272
Replacing a CompactFlash Card in a T640 RE-C1800 Routing Engine on page 275
Taking the T640 Host Subsystem Offline on page 256

Taking the T640 Host Subsystem Offline

The host subsystem is taken offline and brought online as a unit. Before you replace a
control board or Routing Engine, you must take the host subsystem offline.
Normally, if two host subsystems are installed in the T640 router,
master and functions as the backup. You can remove the backup host subsystem
RE1
(or either of its components) without interrupting the functioning of the router. If you
take the master host subsystem offline, the backup host subsystem becomes the master
RE0 functions as the
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