Juniper Networks EX8208 Switch User Manual


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8-port SFP+ Line Card in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
40-port SFP+ Line Card in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
48-port SFP Line Card in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
48-port RJ-45 Line Card in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Line Card LEDs in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Network Port LEDs in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
AC Power Supply in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
AC Power Supply Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
N+1 Redundancy Configuration of AC Power Supplies . . . . . . . . . . . . . . . . . . 42
N+N Redundancy Configuration of AC Power Supplies . . . . . . . . . . . . . . . . . 43
AC Power Supply LEDs in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
DC Power Supply in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
DC Power Supply LEDs in an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Cooling System and Airflow in an EX8208 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 53
Backplane in an EX8208 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Chapter 3 Component Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
USB Port Specifications for an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Console Port Connector Pinout Information for an EX Series Switch . . . . . . . . . . 58
Management Port Connector Pinout Information for an EX8200 Switch . . . . . . . 59
Optical Interface Support in EX8200 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
SFP+ Direct Attach Cables for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . 83
Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Standards Supported by These Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Grounding Cable and Lug Specifications for EX8200 Switches . . . . . . . . . . . . . . 87
Part 2 Planning for Switch Installation
Chapter 4 Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Site Preparation Checklist for an EX8200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 91
General Site Guidelines for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Site Electrical Wiring Guidelines for EX Series Switches . . . . . . . . . . . . . . . . . . . . 94
Environmental Requirements and Specifications for EX Series Switches . . . . . . . 95
Chapter 5 Rack and Cabinet Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Rack Requirements for an EX8208 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Cabinet Requirements and Specifications for an EX8208 Switch . . . . . . . . . . . . 100
Clearance Requirementsfor Airflow and Hardware Maintenance foran EX8208
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Chapter 6 Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cables Connecting the EX8200 Switch to Management Devices . . . . . . . . . . . . 105
UnderstandingEX8200SwitchFiber-Optic CableSignalLoss,Attenuation,and
Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . 106
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . 106
Chapter 7 Planning Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
AC Power Specifications for EX8200 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 109
DC Power Specifications for EX8200 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Power Requirements for EX8208 Switch Components . . . . . . . . . . . . . . . . . . . . . 111
Copyright ©2010,Juniper Networks,Inc.viii
CompleteHardwareGuide forEX8208 EthernetSwitches
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