T4000 Routing Engine Overview; T4000 Routing Engine Description; Table 14: T4000 Supported Routing Engines; And - Juniper T4000 Hardware Manual

T4000 Routing Engine Overview

Related
Documentation
Copyright © 2013, Juniper Networks, Inc.
T4000 Routing Engine Description on page 39
T4000 RE-C1800 Routing Engine Description on page 40
T4000 RE-C1800 LEDs on page 41

T4000 Routing Engine Description

The Routing Engine runs Junos OS. The software processes that run on the Routing Engine
maintain the routing tables, manage the routing protocols used on the router, control
the router interfaces and some chassis components, and provide the interface for system
management and user access to the router.
You can install one or two Routing Engines in the router. The Routing Engines install into
the upper rear of the chassis in the slots labeled
a control board to be installed in the adjacent slot.
installs above CB1 . A Routing Engine does not power up without a control board present
in the adjacent slot.
If two Routing Engines are installed, one functions as the master and the other acts as
the backup. If the master Routing Engine fails or is removed and the backup is configured
appropriately, the backup takes over as the master. If the host system is redundant, the
backup Routing Engine is hot-removable and hot-insertable, but the master Routing
Engine is hot-pluggable. A Routing Engine that is not redundant requires that you power
down the router before replacement.
NOTE: For specific information about Routing Engine components (for
example, the amount of DRAM), issue the
command.
The ports for connecting the Routing Engine to external management devices are located
on the Connector Interface Panel (CIP).
The T4000 router supports the Routing Engine in

Table 14: T4000 Supported Routing Engines

Name Model Number
RE-C1800 RE-DUO-C1800-8G
RE-C1800 RE-DUO-C1800-8G
T4000 Host Subsystem Description on page 35
T4000 Control Board Description on page 36
T4000 Craft Interface LEDs on page 25
Chapter 3: T4000 Hardware Components Overview

and

. Each Routing Engine requires
RE0 RE1
installs below
RE0 CB0
show chassis routing-engine
Table 14 on page 39.
First Supported Junos OS
Release
12.1
12.1R2
, and
RE1
39