Name: Juniper QFX Series
Brand: Juniper
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• Connecting a QFX Series Device to a Management Console on page 285

• Installing a Management Board in a QFX3500 Device on page 368

Chapter 27: Replacing QFX3500 Components

Default Chapter3
- Table of Contents3
- About the Documentation23
Chapter 1 QFX3000 Qfabric Switch Overview27
Chapter 2 QFX3100 Overview27
- QFX3500 Overview27
- QFX3000 Qfabric Switch Overview29
- QFX3100 Overview47
Overview27
Chapter 3 QFX3008-I Overview59
- QFX3008-I Interconnect Device Overview59
  - Software60
  - Chassis Physical Specifications, Front Panel Display, and Midplane60
- QFX3008-I Overview61
Chapter 4 QFX3500 Overview85
- QFX3500 Device Overview85
  - Software86
  - Hardware86
- Field-Replaceable Units in a QFX3500 Device89
  - Figure 33: QSFP+ Uplink Port Locations89
  - Table 9: Frus in a QFX3500 Device89
  - Functionality90
- Chassis Physical Specifications for a QFX3500 Chassis90
- Table 10: Physical Specifications for the QFX3500 Device Chassis90
- Front Panel of a QFX3500 Device91
- Figure 34: QFX3500 Device Front Panel91
- Rear Panel of a QFX3500 Device92
- Figure 35: QFX3500 Device Front92
- Figure 36: QFX3500 Device Rear Panel93
- Cooling System and Airflow for a QFX3500 Device94
- Figure 37: Fan Tray for a QFX3500 Device94
- Figure 38: Management Board for a QFX3500 Device94
- Figure 39: FRU-Side-To-Port-Side Airflow through the QFX3500 Chassis95
- Table 11: Airflow Direction in QFX3500 Device Models95
- Figure 40: Port-Side-To-FRU-Side Airflow through the QFX3500 Chassis96
- Figure 41: Label Identifying Airflow Direction on Power Supply Handle96
- Management Board for a QFX3500 Device97
- Table 12: Airflow Direction in QFX3500 Device Frus97
- Figure 42: Management Board for a QFX3500 Device98
- AC Power Supply for a QFX3500 Device99
- Table 13: Airfow Direction in QFX3500 Management Boards99
- Figure 43: AC Power Supply in QFX3500 Devices100
- Figure 44: Label Identifying Airflow Direction on Power Supply Handle100
- Table 14: Airfow Direction in QFX3500 Power Supplies100
- DC Power Supply for a QFX3500 Device101
- Figure 45: DC Power Supply for a QFX3500 Device101
- Figure 46: DC Power Supply Faceplate for a QFX3500 Device102
- Figure 47: Label Identifying Airflow Direction on Power Supply Handle102
- Grounding Cable and Lug Specifications for a QFX3500 Device103
- Table 15: Airflow Direction in QFX3500 Device Power Supplies103
- Planning105
  - Port and Interface Specifications105
Chapter 5 Site Preparation107
- Planning a QFX3000-G Qfabric System Deployment107
- Site Preparation108
- Site Preparation Checklist for a QFX3100 Director Device109
- Table 16: Site Preparation Checklist109
- Site Preparation Checklist for a QFX3008-I Interconnect Device110
- Table 17: Site Preparation Checklist for a QFX3008-I Interconnect Device110
- Site Preparation Checklist for a QFX3500 Device112
- Table 18: Site Preparation Checklist112
- General Site Guidelines113
- Site Electrical Wiring Guidelines113
- Environmental Requirements and Specifications for the QFX3100 Director113
- Environmental Requirements and Specifications for a QFX3008-I Interconnect113
- Environmental Requirements and Specifications for the QFX3500 Device117
- Table 22: QFX3500 Device Environmental Tolerances117
Chapter 6 Rack and Cabinet Requirements119
- Rack Requirements for a QFX3100 Director Device119
- Table 23: Rack Requirements and Specifications for the QFX3100 Director120
- Rack Requirements for a QFX3008-I Interconnect Device121
- Rack and Cabinet Requirements121
- Table 24: Rack Requirements and Specifications for a QFX3008-I Interconnect121
- Rack Requirements for a QFX3500 Device122
- Table 25: Rack Requirements for the QFX3500 Device122
- Cabinet Requirements for a QFX3100 Director Device123
- Rack and Cabinet Requirements123
Chapter 7 Port and Interface Specifications131
- USB Port Specifications for the QFX Series131
- Console Port Connector Pinouts for the QFX Series132
- Table 29: Console Port Connector Pinouts for the QFX Series132
- Management Port Connector Pinouts for the QFX Series133
- Network Module Port Connector Pinouts for a QFX3100 Director Device133
- Interface Specifications for Data Plane Connections for the Qfabric System153
- Table 39: Interface Support for 40-Gigabit Ethernet QSFP+ Transceivers in QFX3000 Qfabric Systems154
Chapter 8 Cable Specifications155
- Cable Specifications for Control Plane Connections for the QFX Series155
- Cable Specifications for Console and Management Connections for the QFX155
- Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion155
- Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device158
- Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device158
- Table 42: Estimated Values for Factors Causing Link Loss159
Chapter 9 Planning QFX3100 Power Requirements161
- AC Power Specifications for a QFX3100 Director Device161
- AC Power Cord Specifications for a QFX3100 Director Device161
- Table 43: AC Power Specifications for a QFX3100 Director Device161
- Figure 53: AC Plug Types162
- Table 44: AC Power Cord Specifications for a QFX3100 Director Device162
Chapter 10 Planning QFX3008-I Power Requirements163
- AC Power Specifications for a QFX3008-I Interconnect Device with Single-Phase163
  - Wiring Trays163
  - Table 45: AC Power Specifications for a QFX3008-I Interconnect Device with Single-Phase Wiring Trays163
- AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase164
- AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase165
- Power Requirements for a QFX3008-I Interconnect Device165
- AC Power Cord Specifications for a QFX3008-I Interconnect Device with Single-Phase Wiring Trays165
- Table 48: QFX3008-I Interconnect Device Component Power Requirements165
- Table 49: AC Power Cord Specifications for a Single-Phase Wiring Tray166
- AC Power Cord Specifications for a QFX3008-I Interconnect Device with Three-Phase Delta Wiring Trays167
- AC Power Cord Specifications for a QFX3008-I Interconnect Device with Three-Phase Wye Wiring Trays168
- Table 50: Three-Phase Delta AC Power Cord Specifications168
- Calculating Power Requirements for a QFX3008-I Interconnect Device169
Chapter 11 Planning QFX35000 Power Requirements173
- AC Power Specifications for a QFX3500 Device173
- AC Power Cord Specifications for a QFX3500 Device173
- Table 52: AC Power Specifications for a QFX3500 Device173
- Figure 54: AC Plug Types174
- Table 53: AC Power Cord Specifications174
- DC Power Specifications for a QFX3500 Device175
- Table 54: DC Power Specifications for a QFX3500 Device175
Chapter 12 Compliance177
- Agency Approvals for the QFX Series177
- Compliance Statements for EMC Requirements for the QFX Series178
- Declaration of Conformity for QFX Series Devices182
Chapter 13 General Safety Information187
- General Safety Guidelines and Warnings187
- Definitions of Safety Warning Levels188
- Fire Safety Requirements190
- Qualified Personnel Warning191
- Warning Statement for Norway and Sweden192
Chapter 14 Radiation and Laser Warnings193
- Radiation from Open Port Apertures Warning193
- Laser and LED Safety Guidelines and Warnings for the QFX Series194
Chapter 15 Installation and Maintenance Safety Information199
- Installation Instructions Warning199
- Chassis Lifting Guidelines for a QFX3100 Director Device201
- Chassis Lifting Guidelines for a QFX3008-I Interconnect Device201
- Chassis Lifting Guidelines for a QFX3500 Device202
- Restricted Access Warning203
- Ramp Warning204
- Rack-Mounting and Cabinet-Mounting Warnings205
- Grounded Equipment Warning209
- Maintenance and Operational Safety Guidelines and Warnings210
Chapter 16 Power and Electrical Safety Information217
- General Electrical Safety Guidelines and Warnings217
- Prevention of Electrostatic Discharge Damage218
- Figure 55: Place a Component into an Antistatic Bag219
- AC Power Electrical Safety Guidelines220
- AC Power Disconnection Warning222
- DC Power Electrical Safety Guidelines223
- DC Power Disconnection Warning224
- DC Power Grounding Requirements and Warning226
- DC Power Wiring Sequence Warning227
- DC Power Wiring Terminations Warning228
- Multiple Power Supplies Disconnection Warning230
- TN Power Warning230
- Action to Take after an Electrical Accident231
Chapter 17 Before You Begin235
- QFX3000-G Qfabric System Installation Overview235
Chapter 18 Installing a QFX3100 Director Device239
- Installing and Connecting a QFX3100 Director Device239
- Unpacking a QFX3100 Director Device239
- Figure 56: Unpacking a QFX3100 Director Device240
- Table 55: Inventory of Components Provided with a QFX3100 Director240
- Mounting a QFX3100 Director Device on Two Posts in a Rack or Cabinet241
- Figure 57: Mounting the QFX3100 Director Device on Two Posts in a Rack242
- Mounting a QFX3100 Director Device on Four Posts in a Rack or Cabinet243
- Connecting AC Power to a QFX3100 Director Device244
- Figure 58: Mounting a QFX3100 Director Device on Four Posts in a Rack or244
- Powering on a QFX3100 Director Device246
- Figure 59: Connecting an AC Power Cord to an AC Power Supply in a QFX3100 Director Device246
Chapter 19 Installing a QFX3008-I Interconnect Device249
- Installing and Connecting a QFX3008-I Interconnect Device249
- Unpacking a QFX3008-I Interconnect Device250
- Parts Inventory (Packing List) for a QFX3008-I Interconnect Device251
- Table 56: Parts List for QFX3008-I Interconnect Device Configurations251
- Table 57: QFX3008-I Interconnect Device Accessory Kit Part Contents252
- Table 58: QFX3008-I Interconnect Device Accessory Kit Document252
- Installing QFX3008-I Interconnect Device Mounting Hardware on Four-Post Racks or Cabinets253
- Installing QFX3008-I Interconnect Device Mounting Hardware on Two-Post257
- Mounting a QFX3008-I Interconnect Device on a Rack or Cabinet Using a Mechanical Lift260
- Connecting Earth Ground to a QFX3008-I Interconnect Device263
- Figure 62: Installing a QFX3008-I Interconnect Device in a Four-Post Rack263
- Connecting AC Power to a QFX3008-I Interconnect Device with Single-Phase265
  - Wiring Trays265
  - Figure 63: Connecting a Grounding Cable to a QFX3008-I Interconnect265
- Preparing Delta and Wye Three-Phase Power Cords267
- Connecting AC Power to a QFX3008-I Interconnect Device with Three-Phase Wye Wiring Trays276
- Figure 71: Connecting Power to the Three-Phase Wye Wiring Tray278
- Powering on a QFX3008-I Interconnect Device279
Chapter 21 Device281
- Installing the Cable Management System on a QFX3008-I Interconnect281
- Installing the Lockable Front Doors on a QFX3008-I Interconnect Device282
- Figure 72: Installing the Cable Management System on a QFX3008-I Interconnect282
- Figure 73: Installing the Lockable Front Doors on a QFX3008-I Interconnect283
- Installing a QFX3500 Node Device285
- Installing and Connecting a QFX3500 Device285
- Unpacking a QFX3500 Device286
- Table 62: Inventory of Components Supplied with a QFX3500 Device286
- Mounting a QFX3500 Device in a Rack or Cabinet287
- Figure 74: Installing an Installation Blade in a Rack288
- Figure 75: Mounting the QFX3500 Device on Four Posts in a Rack289
- Connecting Earth Ground to a QFX3500 Device290
- Connecting AC Power to a QFX3500 Device291
- Figure 76: Connecting a Grounding Cable to a QFX3500 Device291
- Connecting DC Power to a QFX3500 Device293
- Figure 77: Connecting an AC Power Cord to an AC Power Supply in a QFX3500293
- Figure 78: DC Power Supply Faceplate for a QFX3500 Device296
- Figure 79: Securing Ring Lugs to the Terminals on the DC Power Supply296
Chapter 20 Installing QFX3008-I Optional Components281
Chapter 22 Cabling the Qfabric Switch297
- Interconnecting Two Virtual Chassis for Qfabric System Control Plane297
- Connecting QFX3100 Director Devices in a Director Group300
- Figure 82: QFX3100 Director Group Control Plane Connections300
- Connecting QFX3100 Director Devices to the Control Plane Network301
- Connecting a QFX3008-I Interconnect Device to the Control Plane Network304
- Figure 84: QFX3008-I Interconnect Device Control Plane Connections305
- Connecting a QFX3500 Node Device to the Control Plane Network308
- Figure 85: QFX3500 Node Device Control Plane Connections308
- Table 66: QFX3500 Node Device-To-Virtual Chassis Control Plane Port309
- Connecting a QFX3500 Node Device to a QFX3008-I Interconnect Device310
- Connecting a QFX Series Device to a Management Console311
- Figure 86: Connecting a QFX Series Device to a Management Console through311
- Figure 87: Connecting a QFX Series Device Directly to a Management312
Chapter 23 Performing the Initial Configuration313
- Configuring the Qfabric System Initial Setup on a QFX3100 Director Group313
  - Initial Setup314
  - Restoring a Backup Configuration317
Chapter 24 Removing or Replacing a Device321
- Powering off a QFX3100 Director Device321
- Powering off a QFX3008-I Interconnect Device322
- Powering off a QFX3500 Device324
- Removing a QFX3100 Director Device from a Rack or Cabinet325
- Removing a QFX3008-I Interconnect Device from a Rack or Cabinet326
  - Removing a QFX3500 Device from a Rack or Cabinet328
  - Replacing a QFX3100 Director Device in a QFX3000-G Qfabric System329
    - System330
    - System332
Chapter 25 Replacing QFX3100 Components335
- Installing and Removing QFX3100 Director Device Hardware Components335
- Removing a Power Supply from a QFX3100 Director Device336
- Installing a Power Supply in a QFX3100 Director Device337
- Figure 88: Removing a Power Supply from a QFX3100 Director Device337
- Removing a Fan Module from a QFX3100 Director Device338
- Figure 89: Installing a Power Supply in a QFX3100 Director Device338
- Figure 90: Removing a Fan Module from a QFX3100 Director Device339
- Installing a Fan Module in a QFX3100 Director Device340
- Figure 91: Installing a Fan Module in a QFX3100 Director Device340
- Removing a Network Module from a QFX3100 Director Device341
- Installing a Network Module in a QFX3100 Director Device342
- Figure 92: Removing a Network Module from a QFX3100 Director Device342
- Removing an HDD Module from a QFX3100 Director Device343
- Figure 93: Installing a Network Module in a QFX3100 Director Device343
- Installing an HDD Module in a QFX3100 Director Device344
- Figure 94: Removing an HDD Module from a QFX3100 Director Device344
- Figure 95: Installing an HDD Module in a QFX3100 Director Device345
Chapter 26 Replacing QFX3008-I Components347
Chapter 27 Components347
- Installing and Removing QFX3008-I Interconnect Device Hardware347
- Removing an AC Power Supply from a QFX3008-I Interconnect Device349
- Installing an AC Power Supply in a QFX3008-I Interconnect Device350
- Figure 96: Removing an AC Power Supply from a QFX3008-I Interconnect350
- Removing a Wiring Tray from a QFX3008-I Interconnect Device352
- Figure 97: Installing an AC Power Supply in a QFX3008-I Interconnect352
- Figure 98: Removing a Wiring Tray from a QFX3008-I Interconnect Device353
- Installing a Wiring Tray in a QFX3008-I Interconnect Device354
- Removing a Bottom Fan Tray and Front Panel Display from a QFX3008-I Interconnect Device355
- Figure 99: Installing a Wiring Tray in a QFX3008-I Interconnect Device355
- Installing a Bottom Fan Tray and Front Panel Display in a QFX3008-I Interconnect Device357
- Figure 100: Removing a Bottom Front Fan Tray from a QFX3008-I Interconnect357
- Removing a Side Fan Tray from a QFX3008-I Interconnect Device358
- Figure 101: Installing a Bottom Fan Tray in a QFX3008-I Interconnect Device358
- Installing a Side Fan Tray in a QFX3008-I Interconnect Device360
- Figure 102: Removing a Side Fan Tray from a QFX3008-I Interconnect360
- Figure 103: Installing a Side Fan Tray in a QFX3008-I Interconnect Device361
- Removing a Top Fan Tray from a QFX3008-I Interconnect Device362
- Installing a Top Fan Tray in a QFX3008-I Interconnect Device363
- Figure 104: Removing a Top Fan Tray from a QFX3008-I Interconnect Device363
- Removing a Bottom Air Filter from a QFX3008-I Interconnect Device364
- Figure 105: Installing a Top Fan Tray in a QFX3008-I Interconnect Device364
- Figure 106: Removing a Bottom Air Filter from a QFX3008-I Interconnect365
- Installing a Bottom Air Filter in a QFX3008-I Interconnect Device366
- Removing a Side Air Filter from a QFX3008-I Interconnect Device367
- Figure 107: Installing a Bottom Air Filter in a QFX3008-I Interconnect Device367
- Figure 108: Removing a Side Fan Tray from a QFX3008-I Interconnect368
- Installing a Side Air Filter in a QFX3008-I Interconnect Device369
- Figure 109: Removing a Side Air Filter from a QFX3008-I Interconnect Device369
- Figure 110: Installing a Side Air Filter in a QFX3008-I Interconnect Device Side370
- Taking a Control Board Offline in a QFX3008-I Interconnect Device371
  - Figure 111: Installing a Side Fan Tray in a QFX3008-I Interconnect Device371
  - Taking a Master Control Board Offline372
  - Taking a Backup Control Board Offline373
- Removing a Control Board from a QFX3008-I Interconnect Device373
- Installing a Control Board in a QFX3008-I Interconnect Device375
  - Device375
  - Figure 113: Installing a Control Board in a QFX3008-I Interconnect Device377
  - Device379
- Installing a 16-Port QSFP+ Front Card in a QFX3008-I Interconnect Device379
- Figure 114: Removing a 16-Port Front Card from a QFX3008-I Interconnect379
- Taking the Rear Card Offline in a QFX3008-I Interconnect Device381
- Figure 115: Installing 16-Port QSFP+ Front Card in a QFX3008-I Interconnect381
- Removing a Rear Card from a QFX3008-I Interconnect Device382
- Figure 116: Removing a Rear Card from a QFX3008-I Interconnect Device383
- Installing a Rear Card in a QFX3008-I Interconnect Device384
- Figure 117: Installing a Rear Card in a QFX3008-I Interconnect Device385
- Replacing QFX3500 Components387
  - Installing and Removing QFX3500 Device Hardware Components387
  - Installing a Power Supply in a QFX3500 Device388
  - Figure 118: Installing a Power Supply in a QFX3500 Device389
  - Removing a Power Supply from a QFX3500 Device390
  - Installing a Fan Tray in a QFX3500 Device391
  - Figure 119: Removing a Power Supply from a QFX3500 Device391
  - Figure 120: Installing a Fan Tray in a QFX3500 Device392
  - Removing a Fan Tray from a QFX3500 Device393
  - Installing a Management Board in a QFX3500 Device394
  - Figure 121: Removing a Fan Tray from a QFX3500 Device394
  - Removing a Management Board from a QFX3500 Device395
  - Figure 122: Installing a Management Board in a QFX3500 Device395
  - Figure 123: Removing a Management Board from a QFX3500 Device396
Chapter 28 Replacing Transceivers and Fiber-Optic Cables399
- Removing a Transceiver from a QFX Series Device399
- Installing a Transceiver in a QFX Series Device400
- Disconnecting a Fiber-Optic Cable from a QFX Series Device402
- Figure 124: Installing an SFP Transceiver in a QFX Series Device402
- Figure 125: Installing a QSFP+ Transceiver in a QFX Series Device402
- Connecting a Fiber-Optic Cable to a QFX Series Device403
Chapter 29 Routine Maintenance405
- Maintaining the Air Filters in a QFX3008-I Interconnect Device405
- Maintaining Fiber-Optic Cables in a QFX Series Device405
Chapter 30 Viewing QFX3100 System Information407
- Chassis Status Leds on a QFX3100 Director Device407
- Figure 126: Chassis Leds407
- Table 67: Chassis Leds on a QFX3100 Director Device407
- Management Port Leds on a QFX3100 Director Device408
- Figure 127: Leds on the Management Port on a QFX3100 Director Device408
- Network Module Port Leds on a QFX3100 Director Device409
- Figure 128: Network Module Port Leds on a QFX3100 Director Device409
- Table 68: Link/Activity LED on the Management Port on a QFX3100 Director409
- AC Power Supply LED on a QFX3100 Director Device410
- Figure 129: AC Power Supply Leds on a QFX3100 Director Device410
- Table 69: Network Module Port Leds on a QFX3100 Director Device410
- Table 70: Power Supply LED on a QFX3100 Director Device411
Chapter 31 Viewing QFX3008-I System Information413
- Chassis Status Leds on a QFX3008-I Interconnect Device413
- Figure 130: Chassis Status Leds413
- Table 71: Chassis Status Leds on a QFX3008-I Interconnect Device414
- Control Board Leds on a QFX3008-I Interconnect Device415
- Figure 131: Control Board Leds on a QFX3008-I Interconnect Device415
- Table 72: Control Board Leds on a QFX3008-I Interconnect Device416
- Table 73: Control Board SFP+ Port Leds on a QFX3008-I Interconnect416
- 16-Port QSFP+ Front Card Leds on a QFX3008-I Interconnect Device417
- Figure 132: 16-Port QSFP+ Front Card Leds on a QFX3008-I Interconnect417
- Table 74: 16-Port QSFP+ Front Card Leds on a QFX3008-I Interconnect418
- Table 75: 16-Port QSFP+ Front Card Port Leds on a QFX3008-I Interconnect418
- Rear Card Leds on a QFX3008-I Interconnect Device419
- Figure 133: Rear Card Leds on a QFX3008-I Interconnect Device419
- Table 76: Rear Card Leds on a QFX3008-I Interconnect Device419
- AC Power Supply Leds on a QFX3008-I Interconnect Device420
- Figure 134: AC Power Supply Leds on a QFX3008-I Interconnect Device420
- Table 77: AC Power Supply Leds on a QFX3008-I Interconnect Device420
- Wiring Tray Leds on a QFX3008-I Interconnect Device421
- Figure 135: AC Single-Phase Wiring Tray Leds on a QFX3008-I Interconnect421
- Figure 136: AC Three-Phase Wiring Tray Leds on a QFX3008-I Interconnect422
- Table 78: AC Wiring Tray Leds on a QFX3008-I Interconnect Device422
Chapter 32 Viewing QFX3500 System Information423
- Chassis Status Leds on a QFX3500 Device423
- Figure 137: Chassis Status Leds on a QFX3500 Device423
- Management Port Leds on a QFX3500 Device424
- Table 79: Chassis Status Leds on a QFX3500 Device424
- Access Port and Uplink Port Leds on a QFX3500 Device425
- Figure 138: Management Port Leds on a QFX3500 Device425
- Table 80: Management Port Leds on a QFX3500 Device425
- Figure 139: Leds on the SFP+ Access Ports426
- Figure 140: Leds on the QSFP+ Uplink Ports426
- Table 81: Network Port Leds on SFP+ Access Ports on a QFX3500 Device426
- Fan Tray LED on a QFX3500 Device427
- Figure 141: Fan Tray LED in a QFX3500 Device427
- Table 82: Uplink Port Leds on QSFP+ Uplink Ports on a QFX3500 Device427
- AC Power Supply Leds on a QFX3500 Device428
- Figure 142: Power Supply Leds in a QFX3500 Device428
- Table 83: Fan Tray LED in a QFX3500 Device428
- Table 84: AC Power Supply Leds in QFX3500 Devices428
- DC Power Supply Leds on a QFX3500 Device429
- Figure 143: DC Power Supply Faceplate on a QFX3500 Device429
- Table 85: DC Power Supply Leds on a QFX3500 Device429
- Troubleshooting431
Chapter 33 Restoring Junos os433
- Creating an Emergency Boot Device for a QFX Series Device433
- Performing a Recovery Installation on a QFX3500 Device and QFX3008-I Interconnect Device435
- Performing a Qfabric Switch Recovery Installation on the Director Group436
  - Performing a Recovery Installation Using a Juniper Networks External USB Flash Drive with Preloaded Software437
    - USB Flash Drive441
- Performing a Recovery Installation of the Director Group446
Chapter 34 Returning Hardware449
- Replacement449
- Locating the Serial Number on a QFX3100 Director Device or Component450
- Packing a QFX3100 Director Device or Component for Shipping451
- Packing a QFX3008-I Interconnect Device or Component for Shipping454
  - Packing a QFX3008-I Interconnect Device for Shipping455
  - Packing QFX3008-I Interconnect Device Components for Shipping456
- Returning a QFX3500 Device or Component for Repair or Replacement456
- Locating the Serial Number on a QFX3500 Device or Component457
- Packing a QFX3500 Device or Component for Shipping458
- Contacting Customer Support to Obtain a Return Materials Authorization for a QFX Series Device or Component461
Chapter 35 Alarms and System Log Messages463
- Understanding Alarms463
- Table 86: Alarm Terms and Definitions463
- Chassis Alarm Messages on a QFX3008-I Interconnect Device464
- Table 87: QFX3500 Chassis Alarm Messages465
- Chassis Alarm Messages on a QFX3500 Device468
- Table 88: QFX3500 Chassis Alarm Messages469
- Interface Alarm Messages471

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Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)