T4000 Routing Engine Overview
•
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
RE0
and
RE1
. Each Routing Engine requires
a control board to be installed in the adjacent slot.
RE0
installs below
CB0
, and
RE1
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
show chassis routing-engine
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 on page 39
.
Table 14: T4000 Supported Routing Engines
First Supported Junos OS
Release
Model Number
Name
12.1
RE-DUO-C1800-8G
RE-C1800
12.1R2
RE-DUO-C1800-8G
RE-C1800
Related
Documentation
T4000 Host Subsystem Description on page 35
•
•
T4000 Control Board Description on page 36
•
T4000 Craft Interface LEDs on page 25
39
Copyright © 2013, Juniper Networks, Inc.
Chapter 3: T4000 Hardware Components Overview
Summary of Contents for T4000 -
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