Overview Of Installing And Replacing Components; T320 Field-Replaceable Units - Juniper Core Router T Series Hardware Manual

CHAPTER 23
Overview of Installing and Replacing
Components

T320 Field-Replaceable Units

Copyright © 2018, Juniper Networks, Inc.
T320 Field-Replaceable Units on page 175
Tools and Parts Required to Replace the T320 Hardware Components on page 176
Field-replaceable units (FRUs) are router components that can be replaced at the
customer site. Replacing most FRUs requires minimal router downtime. The router uses
the following types of FRUs:
Hot-removable and hot-insertable FRUs—You can remove and replace these
components without powering off the router or disrupting the routing functions.
Hot-pluggable FRUs—You can remove and replace these components without powering
down the router, but the routing functions of the system are interrupted when the
component is removed.
If the router contains a redundant host subsystem, the backup control board (), and the
backup Routing Engine are hot-removable and hot-insertable. Before you replace a
control board or Routing Engine, you must take the host subsystem offline.
Table 62 on page 176 lists the FRUs for the T320 Core Router.
175