Back-to-Front Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Uplink Modules in EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Intraconnect Module in EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Virtual Chassis Module in EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Component Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
USB Port Specifications for an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Console Port Connector Pinout Information for an EX Series Switch . . . . . . . . . . 42
RJ-45 to DB-9 Serial Port Adapter Pinout Information for a Switch . . . . . . . . . . . 43
Management Port Connector Pinout Information for an EX4500 Switch . . . . . . . 44
Network Port and Uplink Module Port Connector Pinout Information for EX4500
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Virtual Chassis Ports Connector Pinout Information for EX4500 Switches . . . . . 46
Pluggable Transceivers Supported on EX4500 Switches . . . . . . . . . . . . . . . . . . . 49
SFP+ Direct Attach Cables for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . . 67
Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Standards Supported by These Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Grounding Cable and Lug Specifications for EX4500 Switches . . . . . . . . . . . . . . . 72
Planning for Switch Installation
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Site Preparation Checklist for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 77
General Site Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Environmental Requirements and Specifications for EX Series Switches . . . . . . . 81
Rack and Cabinet Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Rack Requirements for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cabinet Requirements for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Clearance Requirements for Airflow and Hardware Maintenance for EX4500
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Network Cable Specifications for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . 91
Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation,
and Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . . 92
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 92
Planning Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
AC Power Supply Specifications for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . 95
DC Power Specifications for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
AC Power Cord Specifications for an EX4500 Switch . . . . . . . . . . . . . . . . . . . . . . 96
Calculating the EX Series Switch Fiber-Optic Cable Power Budget . . . . . . . . . . 100
Calculating the EX Series Switch Fiber-Optic Cable Power Margin . . . . . . . . . . . 100
Copyright © 2015, Juniper Networks, Inc.
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Страница 221: ...PART 6 Troubleshooting Switch Issues Troubleshooting Switch Issues on page 205 203 Copyright 2015 Juniper Networks Inc ...
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Страница 225: ...PART 7 Returning Hardware Returning the Switch or Switch Components on page 209 207 Copyright 2015 Juniper Networks Inc ...
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Страница 285: ...PART 9 Compliance Information Compliance Information on page 269 267 Copyright 2015 Juniper Networks Inc ...
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