CHAPTER 5
Host Subsystem Components and
Description
•
M7i Routing Engine Description on page 17
•
M7i Routing Engine LEDs on page 20
•
M7i Routing Engine RE-B-1800 Description on page 20
•
M7i Routing Engine 1800 LEDs on page 22
•
Routing Engine Specifications on page 22
•
Supported Routing Engines by Router on page 27
M7i 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's interfaces, control some chassis components, and provide the interface for
system management and user access to the router.
The Routing Engine is installed into the midplane from the front of the chassis, as shown
in Figure 5 on page 11. For a more detailed description of the Routing Engine's role in
router architecture, see “Routing Engine Architecture” on page 6.
The Routing Engine is hot-pluggable; you can remove and replace the Routing Engine
without powering down the router, but the routing functions of the system are interrupted
when it is removed.
17Copyright © 2019, Juniper Networks, Inc.
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