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Table of Contents
About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Supported Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
Switch Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
EX9208 Switch Hardware Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chassis Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Host Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Line Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
EX9208 Switch Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
EX9208 Switch Hardware and CLI Terminology Mapping . . . . . . . . . . . . . . . . . . . . 9
Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Chassis Physical Specifications of an EX9208 Switch . . . . . . . . . . . . . . . . . . . . . . 13
Field-Replaceable Units in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Understanding EX9208 Switch Component and Functionality Redundancy . . . . 18
Craft Interface in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Host Subsystem LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fan LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power Supply (PEM) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Switch Fabric LEDs and Control Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Line Card LEDs and Control Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Alarm LEDs and Alarm Cutoff Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Alarm Relay Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Midplane in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Routing Engine Module in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Switch Fabric Module in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Host Subsystem in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Network Port LEDs on Line Cards in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . 33
Modular Interface Card LED in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 34
Routing Engine Module LEDs in an EX9200 Switch . . . . . . . . . . . . . . . . . . . . . . . . 35
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Copyright © 2017, Juniper Networks, Inc.
Summary of Contents for EX9208
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