Name: Juniper EX9208
Brand: Juniper
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CHAPTER 3

Cooling System and Airflow

•

Cooling System and Airflow in an EX9208 Switch on page 39

Cooling System and Airflow in an EX9208 Switch

The cooling system in an EX9208 switchconsists of a fan tray and an air filter. The cooling

system components work together to keep all switch components within the acceptable

temperature range.

This topic describes:

•

Fan Tray on page 39

•

Airflow Direction in the EX9208 Switch Chassis on page 40

Fan Tray

Fan tray is a hot-insertable and hot-removable field-replaceableunit (FRU) and contains

six fans. The fan tray and air filter install vertically in the rear of the switch. See

Figure 19 on page 40 and Figure 20 on page 40.

Default Chapter3
- Table of Contents3
- About the Documentation19
- About the Documentation21
  - Requesting Technical Support22
    - Self-Help Online Tools and Resources22
    - Opening a Case with JTAC22
- Chassis Components and Descriptions25
- Cooling System and Airflow25
- Line Cards25
- Overview25
- Switch Overview25
Chapter 1 Switch Overview27
- Switch Overview27
- Power Supplies31
- Switch Overview33
- Table 6: CLI Equivalents of Terms Used in Documentation for EX920833
Chapter 2 Chassis Components and Descriptions37
- Chassis Physical Specifications of an EX9208 Switch37
- Table 7: Physical Specifications of the EX9208 Switch Chassis37
- Figure 4: EX9208 Switch39
- Figure 5: EX9208 Switch with AC Power Supplies39
- Field-Replaceable Units in an EX9200 Switch40
- Figure 6: EX9208 Switch with DC Power Supplies40
- Table 8: Frus in an EX9200 Switch40
- Understanding EX9208 Switch Component and Functionality Redundancy42
- Craft Interface in an EX9200 Switch43
  - Figure 7: Craft Interface in an EX9204 Switch44
  - Figure 8: Craft Interface in an EX9208 Switch44
  - Figure 9: Craft Interface in an EX9214 Switch45
  - Host Subsystem Leds45
  - Fan Leds46
  - Power Supply (PEM) Leds46
  - Table 10: Fan Leds on the Craft Interface46
  - Table 11: Power Supply Leds on the Craft Interface46
  - Table 9: Host Subsystem Leds on the Craft Interface46
  - Line Card Leds and Control Buttons47
  - Switch Fabric Leds and Control Buttons47
  - Table 12: Switch Fabric Module Leds on the Craft Interface47
  - Table 13: Line Card Leds on the Craft Interface47
  - Alarm Leds and Alarm Cutoff Button48
  - Alarm Relay Contacts48
  - Table 14: Alarm Leds and Alarm Cutoff/Lamp Test Button48
- Midplane in an EX9200 Switch49
- Figure 10: Alarm Relay Contacts in EX9200 Switches49
- Figure 11: Midplane in an EX9204 Switch50
- Figure 12: Midplane in an EX9208 Switch50
- Routing Engine Module in an EX9200 Switch51
- Figure 13: Midplane in an EX9214 Switch51
- Figure 14: RE Module in an EX9200 Switch52
- Switch Fabric Module in an EX9200 Switch53
- Figure 15: SF Module EX9200-SF54
- Figure 16: SF Module EX9200-SF255
- Host Subsystem in an EX9200 Switch56
- Network Port Leds on Line Cards in an EX9200 Switch57
- Table 15: Network Port Leds on Line Cards in an EX9200 Switch-Link/Activity57
- Modular Interface Card LED in an EX9200 Switch58
- Table 16: Network Port Leds on Line Cards in an EX9200 Switch-Status58
- Routing Engine Module Leds in an EX9200 Switch59
- Switch Fabric Module Leds in an EX9200 Switch59
- Table 17: MIC LED for EX9200 Switches59
- Table 18: RE Module Leds of an EX9200 Switch59
- Cable Management Brackets in an EX9208 Switch60
- Figure 17: Cable Management Brackets60
- Table 19: SF Module Leds of an EX9200 Switch60
- Figure 18: Cable Management Brackets Installed on the Switch61
Chapter 3 Cooling System and Airflow63
- Cooling System and Airflow in an EX9208 Switch63
Chapter 4 Power Supplies67
- AC Power Supply Configurations68
- Figure 22: AC Power Supply for an EX9208 Switch68
- AC Power Supply Leds in an EX9208 Switch69
- DC Power Supply in an EX9208 Switch70
- DC Power Supply Leds in an EX9208 Switch72
- Table 21: Power Supply Redundancy and Power Distribution72
- Table 22: DC Power Supply Leds in EX9208 Switches73
- Power Supplies67
  - AC Power Supply in an EX9208 Switch67
    - AC Power Supply Description67
Chapter 5 Line Cards75
- Line Cards75
- Preparation Overview101
- Site Planning, Preparation, and Specifications101
Chapter 6 Preparation Overview103
- Environmental Requirements and Specifications for EX Series Switches105
- Table 37: EX Series Switch Environmental Tolerances105
- General Site Guidelines109
- Site Electrical Wiring Guidelines110
- Table 38: Site Electrical Wiring Guidelines110
- Rack Requirements111
- Cabinet Requirements111
- Preparation Overview103
  - Site Preparation Checklist for an EX9208 Switch103
  - Table 36: Site Preparation Checklist103
Chapter 7 Planning Power Requirements115
- Power Requirements for EX9200 Switch Components115
- Table 41: EX9200 Switch Component Power Requirements115
- AC Power Supply Specifications for EX9208 Switches116
- Table 42: AC Power Supply Specifications for an EX9208 Switch116
- AC Power Cord Specifications for an EX9208 Switch117
- Table 43: AC Power System Specifications117
- Table 44: AC Power Cord Specifications for an EX9208 Switch117
- Figure 39: AC Plug Types119
- DC Power Supply Specifications for EX9208 Switches120
- Table 45: DC Power Supply Specifications for an EX9208 Switch120
- Grounding Cable and Lug Specifications for EX9200 Switches121
- Calculating the EX Series Switch Fiber-Optic Cable Power Budget123
- Calculating the EX Series Switch Fiber-Optic Cable Power Margin124
- Table 48: Estimated Values for Factors Causing Link Loss124
Chapter 8 Transceiver and Cable Specifications127
- Pluggable Transceivers Supported on EX9200 Switches127
- Table 49: Optical Interface Support for Fast Ethernet and Gigabit Ethernet SFP129
- Table 50: Optical Interface Support for Fast Ethernet and Fast Ethernet SFP140
- Table 51: Optical Interface Support for SFP+ Transceivers in EX9200143
- Table 52: Optical Interface Support for 40-Gigabit QSFP+ Transceivers in149
- Table 53: Optical Interface Support for 100-Gigabit QSFP+ Transceivers in152
- Table 54: Optical Interface Support for CFP Transceivers in EX9200154
- Pluggable Transceivers Supported on EX Series Switches156
- SFP+ Direct Attach Copper Cables for EX Series Switches157
- QSFP+ Direct Attach Copper Cables for EX Series Switches162
- Management Cable Specifications168
- Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation168
Chapter 9 Pinout Specifications171
- USB Port Specifications for an EX Series Switch172
- RJ-45 Management Port Connector Pinout Information173
- Table 61: RJ-45 Management Port Connector Pinout Information173
- RJ-45 to DB-9 Serial Port Adapter Pinout Information for a Switch174
- Table 62: RJ-45 to DB-9 Serial Port Adapter Pinout Information174
- Pinout Specifications171
  - Console Port Connector Pinout Information for an EX Series Switch171
  - Table 60: EX Series Switches Console Port Connector Pinout Information171
- Initial Installation and Configuration177
Chapter 10 Unpacking the Switch179
- Unpacking the EX9200 Switch179
- Unpacking a Line Card Used in an EX9200 Switch180
- Figure 43: Contents of the Shipping Crate for EX9200 Switches180
- Parts Inventory (Packing List) for an EX9208 Switch181
- Figure 44: Unpacking a Line Card Used in an EX9200 Switch181
- Table 63: Parts List for Different EX9208 Switch Configurations182
- Table 64: Accessory Box Parts List182
- Registering Products-Mandatory for Validating Slas183
Chapter 11 Installing the Switch185
- Installing and Connecting an EX9208 Switch185
- Installing a Mounting Shelf in a Rack or Cabinet for an EX9208 Switch186
- Table 65: Four-Post Rack or Cabinet Mounting Hole Locations186
- Figure 45: Installing the Mounting Shelf for a Four-Post Rack or Cabinet187
- Moving the Mounting Brackets for Center-Mounting an EX9200 Switch188
- Figure 46: Installing the Mounting Shelf for an Open-Frame Rack188
- Mounting an EX9200 Switch on a Rack or Cabinet Using a Mechanical Lift189
- Installing and Removing EX9208 Switch Hardware Components194
Chapter 12 Connecting the Switch to Power197
- Connecting Earth Ground to an EX Series Switch197
Chapter 13 Switch201
- Figure 49: Connecting the Grounding Lug to a Switch Mounted on Four Posts of201
- Table 67: Special Instructions to Follow before Connecting Earth Ground to a201
- Connecting AC Power to an EX9208 Switch203
- Figure 51: Connecting the Power Supply Cord to an EX9208 Switch205
- Powering on an AC-Powered EX9200 Switch206
- Connecting DC Power to an EX9208 Switch207
- Figure 52: DIP Input Mode Switch209
- Figure 53: Connecting DC Power to an EX9208 Switch211
- Powering on a DC-Powered EX9200 Switch212
- Connecting the Switch to the Network215
Chapter 14 Performing Initial Configuration221
- EX9200 Switch Default Configuration221
- Connecting and Configuring an EX9200 Switch (CLI Procedure)222
- Installing, Maintaining, and Replacing Components227
Chapter 15 Removing the Switch229
- Removing an EX9200 Switch from a Rack or Cabinet Using a Mechanical Lift230
- Removing an EX9208 Switch from a Rack or Cabinet Without Using a Mechanical Lift231
- Removing the Switch229
  - Powering off an EX9200 Switch229
Chapter 16 Replacing Cooling System Component233
- Replacing Cooling System Component233
Chapter 17 Replacing Power Supply239
- Installing an AC Power Supply in an EX9208 Switch239
- Figure 65: Installing an AC Power Supply in an EX9208 Switch240
- Removing an AC Power Supply from an EX9208 Switch241
- Installing a DC Power Supply in an EX9208 Switch242
- Figure 66: Removing an AC Power Supply from an EX9208 Switch242
- Removing a DC Power Supply from an EX9208 Switch244
- Figure 67: Installing a DC Power Supply in an EX9208 Switch244
- Figure 68: Removing a DC Power Supply from an EX9208 Switch246
Chapter 18 Replacing Routing Engine (RE) Module247
- Installing an RE Module in an EX9200 Switch247
- Figure 69: Installing an RE Module in an EX9200 Switch248
- Removing an RE Module from an EX9200 Switch249
- Taking the Host Subsystem Offline in an EX9200 Switch250
- Figure 70: Removing an RE Module from an EX9200 Switch250
Chapter 19 Upgrading and Replacing Switch Fabric (SF) Module253
- Upgrading an EX9200-SF to an EX9200-SF2253
- Installing an SF Module in an EX9200 Switch256
- Figure 71: Installing an SF Module in an EX9200 Switch258
- Removing an SF Module from an EX9200 Switch259
- Figure 72: Removing an SF Module from an EX9200 Switch260
Chapter 20 Maintaining and Replacing Line Card261
- Handling and Storing Line Cards in EX9200 Switches261
- Maintaining Line Card Cables in EX9200 Switches264
- Unpacking a Line Card Used in an EX9200 Switch265
- Installing a Line Card in an EX9200 Switch266
- Figure 76: Unpacking a Line Card Used in an EX9200 Switch266
- Removing a Line Card from an EX9200 Switch268
- Figure 77: Installing a Line Card268
- Figure 78: Removing a Line Card from an EX9200 Switch270
Chapter 21 Replacing a MIC in an EX9200-MPC Line Card271
- Installing a MIC in an EX9200-MPC Line Card271
- Figure 79: Installing the Septum273
- Figure 80: Removing the Septum273
- Figure 81: Installing an EX9200-10XS-MIC or EX9200-20F-MIC274
- Removing a MIC from an EX9200-MPC Line Card275
- Figure 82: Installing an EX9200-40T-MIC275
- Figure 83: Removing an EX9200-10XS-MIC or EX9200-20F-MIC277
- Figure 84: Removing an EX9200-40T-MIC278
Chapter 22 Replacing Transceiver279
- Removing a Transceiver from a Switch281
- Figure 85: Installing a Transceiver in a Switch281
- Figure 86: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver from a283
- Replacing Transceiver279
  - Installing a Transceiver in a Switch279
Chapter 23 Replacing Alarm Relay Wire285
- Switch285
- Figure 87: Alarm Relay Contacts286
- Figure 88: Alarm Relay Contacts286
Chapter 24 Maintaining and Replacing Fiber-Optic Cable287
- Connecting a Fiber-Optic Cable to a Switch287
- Disconnecting a Fiber-Optic Cable from a Switch288
- Figure 89: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed288
- Maintaining Fiber-Optic Cables in Switches289
Chapter 25 Replacing Cable Management Bracket291
- Installing Cable Management Brackets on an EX9208 Switch291
- Removing Cable Management Brackets from an EX9208 Switch292
- Figure 90: Installing the Cable Management Brackets in an EX9208 Switch292
Chapter 26 Routine Maintenance293
- Holding a Line Card294
- Figure 92: Do Not Grasp the Connector Edge295
- Storing a Line Card296
- Figure 93: Do Not Rest the Edge of a Line Card on a Hard Surface296
- Maintaining Line Card Cables in EX9200 Switches297
- Maintaining Power Supplies in EX9200 Switches297
- Maintaining the Air Filter in EX9200 Switches298
- Maintaining Host Subsystem in EX9200 Switches299
- Maintaining the Fan Tray in EX9200 Switches301
- Routine Maintenance293
Chapter 27 Contactingcustomersupportandreturningthe Chassis or305
- Components305
- Returning an EX9200 Switch or Component for Repair or Replacement305
- Locating the Serial Number on an EX9208 Switch or Component306
- Packing an EX9200 Switch or Component314
  - Packing an EX9200 Switch314
  - Packing EX9200 Switch Components for Shipping315
- Part 5 Troubleshooting317
- Troubleshooting317
Chapter 28 Troubleshooting Procedures319
- Troubleshooting Power Supplies in an EX9200 Switch320
- Troubleshooting Line Cards in EX9200 Switches321
- Troubleshooting Traffic Drops on EX9200-6QS Line Cards323
- Troubleshooting Procedures319
  - Troubleshooting the Cooling System in an EX9200 Switch319
Chapter 29 Alarms and System Log Messages325
- Understanding Alarm Types and Severity Levels on EX Series Switches325
- Table 68: Alarm Terms325
- Chassis Component Alarm Conditions on EX9200 Switches326
- Monitoring System Log Messages334
- Table 71: Filtering System Log Messages334
- Table 72: Viewing System Log Messages336
- Safety and Compliance Information339
Chapter 30 General Safety Guidelines and Warnings341
- Definitions of Safety Warning Levels342
- Qualified Personnel Warning344
- Warning Statement for Norway and Sweden345
Chapter 31 Fire Safety Requirements347
Chapter 32 Installation Safety Guidelines and Warnings349
- Installation Instructions Warning349
- Chassis Lifting Guidelines351
- Restricted Access Warning352
- Ramp Warning353
- Rack-Mounting and Cabinet-Mounting Warnings354
- Grounded Equipment Warning359
Chapter 33 Radiation and Laser Safety Guidelines and Warnings361
- Radiation from Open Port Apertures Warning361
- Laser and LED Safety Guidelines and Warnings for Switches362
Chapter 34 Maintenance and Operational Safety Warnings367
- Maintenance and Operational Safety Guidelines and Warnings367
Chapter 35 Electrical Safety Guidelines and Warnings373
- General Electrical Safety Guidelines and Warnings373
- Action to Take after an Electrical Accident374
- Prevention of Electrostatic Discharge Damage375
- Figure 99: Placing a Component into an Antistatic Bag376
- AC Power Electrical Safety Guidelines377
- AC Power Disconnection Warning379
- DC Power Electrical Safety Guidelines for Switches380
- DC Power Disconnection Warning383
- DC Power Grounding Requirements and Warning384
- DC Power Wiring Sequence Warning385
- DC Power Wiring Terminations Warning387
- Multiple Power Supplies Disconnection Warning389
- TN Power Warning389
Chapter 36 Agency Approvals and Compliance Statements391
- Agency Approvals for EX Series Switches391
- Battery Compliance Statement for Environmental Requirements for EX Series391
  - Switches391
- Compliance Statements for EMC Requirements for EX Series Switches392
- Compliance Statements for Acoustic Noise for EX Series Switches396

Juniper EX9208 Hardware Guide

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Brand	Juniper
Model	EX9208
Category	Switch
Language	English