Routing Engine Function; Routing Engine Slots; Routing Engine Interface Ports - Juniper MX960 Hardware Manual

RE-S-1800x4 supported for Junos OS Release 10.4 and later.
RE-S-X6-64G supported for Junos OS Release 15.1F4, 16.1 and later.
RE-S-X6-64G-LT supported for Junos OS Release 17.2R1 and later.
NOTE: The Routing Engine is equipped with limited encryption support only.
NOTE: If two Routing Engines are installed, they must both be the same hardware model.

Routing Engine Function

The Routing Engine runs the 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.

Routing Engine Slots

You can install one or two Routing Engines in the router. Each Routing Engine must be installed directly
into an SCB. A USB port on the Routing Engine accepts a USB memory device that allows you to load
Junos OS. The Routing Engines install into the front of the chassis in vertical slots directly into 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.
On the MX960 router, a Routing Engine installed in SCB slot 2/6 receives no power and supplies no
additional routing functions. If no SCB is installed in slot 2/6, install a blank panel in the slot.

Routing Engine Interface Ports

Three ports, located on the right side of the routing engine, connect the Routing Engine to one or more
external devices on which system administrators can issue Junos OS command-line interface (CLI) commands
to manage the router.
The ports with the indicated labels function as follows:
AUX—Connects the Routing Engine to a laptop, modem, or other auxiliary device through a serial cable
with an RJ-45 connector.
CONSOLE—Connects the Routing Engine to a system console through a serial cable with an RJ-45
connector.
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