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Juniper EX9208 Hardware Guide

Juniper EX9208
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In EX9204 and EX9208 switches, you can add a second SF module to the configuration
for host subsystem redundancy. In EX9214 switches, you can add a third SF module to
the configuration for host subsystem redundancy. If two SF modules are installed, one
SF module functions as the master and the other functions as the backup. If the master
SF module or its components fails or is removed the backup module takes the role of
master.
The Routing Engine module (RE module) installs directly into a slot on the SF module.
The Switch Fabric contains logic that determines which Routing Engine is the master.
The master Routing Engine controls many internal functions of the SF module.
The backup SF module is hot-insertable and hot-removable, but the master SF module
is hot-pluggable.
The key functions of the Switch Fabric are:
•
Monitor and control system functions
•
Interconnection of all line cards
•
Clocking, system resets, and booting control
•
Routing Engine carrier
Figure 15 on page 30 shows the original SF module, EX9200-SF.
Figure 15: SF Module EX9200-SF
g022002
Copyright © 2017, Juniper Networks, Inc.30
EX9208 Switch Hardware Guide

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Juniper EX9208 Specifications

General IconGeneral
BrandJuniper
ModelEX9208
CategorySwitch
LanguageEnglish

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