Juniper EX9208, Hardware Manual, Page: 52 / 396

The backup Routing Engine is hot-insertable and hot-removable, but the master Routing
Engine is hot-pluggable. If only one RE module is installed, you must disable the switch
before removing the RE module.
A base configuration EX9204 and EX9208 switch has only one RE module. See EX9204
Switch Configurations and “EX9208 Switch Configurations” on page 7 . You can add a
second RE module to the configuration for a redundant host subsystem.
A base configuration EX9214 switch has two RE modules. See EX9214 Switch
Configurations . You can add a third RE module to the configuration for a redundant host
subsystem.
Figure 14 on page 28 shows the RE module in an EX9200 switch.
Figure 14: RE Module in an EX9200 Switch
g022003
USB
port Reset
button Online
LED Master
LED
OK/Fail
LED
Storage
LED
Extractor
clip
Extractor
clip
Console
port
Auxiliary
port Ethernet
port SSD
slot 2 SSD
slot 1
NOTE: We recommend that you install two RE modules for redundancy.
The RE module performs the following functions:
•
Provides full fabric connectivity to all line cards installed in the chassis
•
Through the switching plane, provides switching functionality to the switch
• Powers the line cards on and off
• Controls system resets and the boot sequence for the switch
•
Monitors and controls the fan speed, power status for various chassis components,
and craft interface LEDs
The RE module has the following components:
•
Auxiliary (
AUX
) port—Connects the RE module to a modem or other auxiliary device.
•
Console (
CONSOLE
) port—Connects the RE module to a system console through a
cable with an RJ-45 connector. See “Connecting an EX9200 Switch to a Management
Console or an Auxiliary Device” on page 192 .
•
Ethernet (
<...>
) port—Connects the RE module through an Ethernet connection to a
management LAN (or any other device that plugs into an Ethernet connection) for
Copyright © 2017, Juniper Networks, Inc. 28
EX9208 Switch Hardware Guide