Figure 13: Midplane in an EX9214 Switch
Related
Documentation
EX9204 Switch Hardware Overview•
• EX9208 Switch Hardware Overview on page 3
• EX9214 Switch Hardware Overview
Routing Engine Module in an EX9200 Switch
The Routing Engine is housed in a Routing Engine module (RE module) (see
Figure 14 on page 28). The Routing Engine runs Junos OS. Software processes that run
on the Routing Engine maintain the routing tables, manage the routing protocols used
on the switch, control the switch interfaces, control some chassis components, and
provide the interface for system management and user access to the switch.
Routing Engine modules (RE modules) are installed directly into Switch Fabric modules
(SF modules).Each RE module houses one Routing Engine. An EX9204 or EX9208 switch
can have either one or two Routing Engines. An EX9214 switch can have either two or
three Routing Engines. 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, the
backup takes over as the master.
27Copyright © 2017, Juniper Networks, Inc.
Chapter 2: Chassis Components and Descriptions
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