T320 Host Subsystem Description; T320 Routing Engine Overview; T320 Routing Engine Description - Juniper T320 Hardware Manual

T320 Host Subsystem Description

Related
Documentation

T320 Routing Engine Overview

T320 Routing Engine Description

Copyright © 2010, Juniper Networks, Inc.
Replacing a T320 SIB on page 174
The host subsystem provides the routing and system management functions of the
router. You can install one or two host subsystems on the router. To operate, each host
subsystem functions as a unit; the Routing Engine requires the corresponding T-CB, and
vice versa.
NOTE: We recommend you install two host subsystems for redundant
protection. If you install only one host subsystem, we recommend you install
it in slot RE0 .
Each host subsystem has three LEDs that display its status. The host subsystem LEDs
are located on the upper right of the craft interface. For more information about the host
subsystem LEDs, see "T320 Craft Interface Host Subsystem LEDs" on page 38.
The host subsystem consists of the following components:
One or two Routing Engines
One or two control boards
Maintaining the T320 Host Subsystem on page 113
Replacing the T320 Host Subsystem Components on page 160
Taking the T320 Host Subsystem Offline on page 160
T320 Routing Engine Description on page 25
T320 RE-600 Description on page 26
T320 RE-600 LEDs on page 28
T320 RE-1600 Description on page 28
T320 RE-1600 LEDs on page 29
T320 RE-2000 Description on page 30
T320 RE-2000 LEDs on page 31
The Routing Engine runs Junos OS. Software processes that run on the Routing Engine
maintain the routing tables, manage the routing protocols used on the router, control
the router interfaces, control some chassis components, and provide the interface for
system management and user access to the router.
Chapter 3: T320 Hardware Components
25