Replacing Host Subsystem Components; Replacing T4000 Host Subsystem Components; Taking The T4000 Host Subsystem Offline - Juniper T4000 Hardware Manual

CHAPTER 29

Replacing Host Subsystem Components

Replacing T4000 Host Subsystem Components

Taking the T4000 Host Subsystem Offline

Copyright © 2018, Juniper Networks, Inc.
Replacing T4000 Host Subsystem Components on page 273
Replacing a T4000 LCC-CB on page 275
Replacing a T4000 Routing Engine on page 280
Replacing a CompactFlash Card in a T4000 RE-C1800 Routing Engine on page 286
Replacing a DIMM Module in a T4000 RE-C1800 Routing Engine on page 289
Replacing a Solid-State Disk in a T4000 RE-C1800 Routing Engine on page 290
1. Taking the T4000 Host Subsystem Offline on page 273
Replacing a Control Board or Routing Engine Component on page 275
2.
Before you replace a control board or Routing Engine,, you must take the host subsystem
offline. The host subsystem is taken offline and brought online as a unit. Normally, if two
host subsystems are installed in the router,
as the backup.
NOTE: Router performance might change if the backup Routing Engine's
configuration differs from the former master's configuration. For the most
predictable performance, configure the two Routing Engines identically,
except for parameters unique to each Routing Engine.
NOTE: For information about high availability features, configuring graceful
switchover and nonstop active routing, see the Junos OS High Availability
Library for Routing Devices.
Table 79 on page 274 explains the effect of taking the host subsystem offline.
functions as the master and
RE0
functions
RE1
273