Juniper MX2020 Hardware Manual page 11

Appendix D
Appendix E
Appendix F
Appendix G
Copyright © 2013, Juniper Networks, Inc.
Power Guidelines, Requirements, and Specifications for the MX2020
Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
MX2020 Router DC Power Specifications and Requirements . . . . . . . . . . . . . . . 357
MX2020 DC Power Subsystem Electrical Specifications . . . . . . . . . . . . . . . 357
DC Power Circuit Breaker Requirements for the MX2020 Router . . . . . . . . . 358
MX2020 DC Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
DC Power Cable Specifications for the MX2020 Router . . . . . . . . . . . . . . . 360
MX2020 DC Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Calculating DC Power Requirements for MX2020 Routers . . . . . . . . . . . . . . . . . 365
MX2020 Router AC Power Specifications and Requirements . . . . . . . . . . . . . . . 369
MX2020 AC Power Subsystem Electrical Specifications . . . . . . . . . . . . . . . 369
MX2020 Three-Phase Delta AC Power Distribution Module
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
MX2020 Three-Phase Wye AC Power Distribution Module
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
MX2020 AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
MX2020 AC Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
Calculating AC Power Requirements for MX2020 Routers . . . . . . . . . . . . . . 377
MX2020 Router Grounding Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
MX2020 Chassis Grounding Points Specifications . . . . . . . . . . . . . . . . . . . . 380
MX2020 Router Grounding Cable Lug Specifications . . . . . . . . . . . . . . . . . . 381
MX2020 Router Grounding Cable Specifications . . . . . . . . . . . . . . . . . . . . . 381
Site Electrical Wiring Guidelines for MX Series Routers . . . . . . . . . . . . . . . . . . . . 382
Distance Limitations for Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Radio Frequency Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Electromagnetic Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Cable and Wire Guidelines and Specifications for the MX2020 Router . . 385
Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion . . . 385
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . 385
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . 385
Calculating Power Budget and Power Margin for Fiber-Optic Cables . . . . . . . . . 386
Calculating Power Budget for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . 386
Calculating Power Margin for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 387
CB-RE Interface Cable and Wire Specifications for MX Series Routers . . . . . . . . 388
MX2020 Cable Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
RJ-45 Connector Pinouts for an MX Series CB-RE MANAGEMENT Port . . . . . . . 391
RJ-45 Connector Pinouts for MX Series CB-RE AUX and CONSOLE Ports . . . . . 392
Contacting Customer Support and Returning MX2020 Hardware . . . . . . 393
Locating MX2020 Component Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . 393
Displaying MX2020 Router Components and Serial Numbers . . . . . . . . . . . 393
MX2020 Chassis Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401
MX2020 Craft Interface Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . 402
MX2020 MPC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
MX2020 MIC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
MX2020 CB-RE Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404
MX2020 SFB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405
MX2020 Power Distribution Module Serial Number Label . . . . . . . . . . . . . 406
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