Related
Documentation
MX480 Router Description on page 3•
• MX480 Chassis Description on page 9
• MX480 Dense Port Concentrator (DPC) Description on page 55
• MX480 Modular Port Concentrator (MPC) Description on page 87
• MX480 SCB Description on page 107
• MX480 Flexible PIC Concentrator (FPC) Description on page 63
• MX480 Power System Description on page 99
MX480 Routing Engine Description
TheRoutingEngine is an Intel-based PC platform thatruns 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.
You can install one or two Routing Engines in the router. The Routing Engines install into
the front of the chassis in horizontal slots in the SCBs labeled 0 and 1. 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.
The Routing Engines are hot-pluggable. Each Routing Engine must be installed directly
into an SCB. A USB port on the Routing Engine accepts a USB memory card that allows
you to load Junos OS. Figure 12 on page 27 shows RE-S-1800 Routing Engine and
Figure 13 on page 28 shows the RE-S-X6-64G Routing Engine.
Figure 12: RE-S-1800 Routing Engine
27Copyright © 2017, Juniper Networks, Inc.
Chapter 5: Host Subsystem Components and Descriptions
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