Mx240 Routing Engine Description; Figure 21: Midplane - Juniper MX240 Hardware Manual

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MX240 Routing Engine Description

Copyright © 2019, Juniper Networks, Inc.

Figure 21: Midplane

MX240 System Overview on page 27
MX240 Chassis Description on page 30
MX240 Dense Port Concentrator (DPC) Description on page 93
MX240 SCB-MX Description
MX240 Flexible PIC Concentrator (FPC) Description on page 101
MX240 Power System Description on page 41
The Routing Engine is an Intel-based PC platform that 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.
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
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.
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 Backup Routing Engine is
hot-insertable and hot-removable.
The MX240 router supports the RE-S-1300-2048, EE-S-2000-4096, RE-S-1800,
RE-S-X6-64G, and RE-S-X6-64G-LT Routing Engines. See
Figure 23 on page 60, and Figure 24 on page 60.
Chapter 1: Overview
0 and 1/0 . Each Routing
Figure 22 on page 60,
59