Mx240 Routing Engine Description - Juniper MX240 Hardware Manual

SEE ALSO
MX240 System Overview | 29
MX240 Chassis Description | 32
MX240 Dense Port Concentrator (DPC) Description | 113
MX240 SCB-MX Description
MX240 Flexible PIC Concentrator (FPC) Description | 123
MX240 Power System Description | 46

MX240 Routing Engine Description

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 0 and 1/0. 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.
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 24 on page 70.
NOTE: If two Routing Engines are installed, they must both be the same hardware model.
The RE-S-X6-64G-LT Routing Engine is equipped with limited encryption support only.
Figure 22 on page 70, Figure 23 on page 70, and
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