Juniper QFabric QFX3000-G Hardware Documentation page 9

Chapter 13
Chapter 14
Chapter 15
Chapter 16
Copyright © 2018, Juniper Networks, Inc.
Cable Specifications for Console and Management Connections for the QFX
Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and
Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables . . . . . . . . . 269
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . 269
Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation,
and Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . 270
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 271
Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device . . . . . . 271
Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device . . . . . . 272
Calculating the EX Series Switch Fiber-Optic Cable Power Budget . . . . . . . . . . . 274
Calculating the EX Series Switch Fiber-Optic Cable Power Margin . . . . . . . . . . . 274
Planning QFX3100 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
AC Power Specifications for a QFX3100 Director Device . . . . . . . . . . . . . . . . . . . 277
AC Power Cord Specifications for a QFX3100 Director Device . . . . . . . . . . . . . . . 277
Planning QFX3008-I Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 281
AC Power Specifications for a QFX3008-I Interconnect Device with Single-Phase
Wiring Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase
Delta Wiring Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase
Wye Wiring Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Power Requirements for a QFX3008-I Interconnect Device . . . . . . . . . . . . . . . . 283
AC Power Cord Specifications for a QFX3008-I Interconnect Device with
Single-Phase Wiring Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
AC Power Cord Specifications for a QFX3008-I Interconnect Device with
Three-Phase Delta Wiring Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
AC Power Cord Specifications for a QFX3008-I Interconnect Device with
Three-Phase Wye Wiring Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Calculating Power Requirements for a QFX3008-I Interconnect Device . . . . . . 288
Power Consumption of Different QFX3008-I Interconnect Device
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
System Thermal Output for Different QFX3008-I Interconnect Device
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Planning QFX5100 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
AC Power Specifications for a QFX5100 Device . . . . . . . . . . . . . . . . . . . . . . . . . . 291
AC Power Cord Specifications for a QFX Series Device . . . . . . . . . . . . . . . . . . . . 292
DC Power Specifications for a QFX5100 Device . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Planning QFX3600 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
AC Power Specifications for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . 295
AC Power Cord Specifications for a QFX Series Device . . . . . . . . . . . . . . . . . . . . 295
DC Power Specifications for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . 297
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