
Front-to-BackAirflow............................................36
Back-to-FrontAirflow............................................37
Chapter4 PowerSupplies...................................................39
ACPowerSupplyinEX4500Switches..................................39
AC Power Supply LEDs in EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
DCPowerSupplyinEX4500Switches..................................42
DC Power Supply LEDs in EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Chapter5 Viewing SystemInformation .......................................45
DashboardforEXSeriesSwitches.....................................45
GraphicalChassisViewer.........................................46
SystemInformationPanel........................................47
HealthStatusPanel.............................................49
CapacityUtilizationPanel.........................................51
AlarmsPanel...................................................51
FileSystemUsage...............................................52
Chassis Viewer .................................................52
Part 2 Site Planning, Preparation, and Specifications
Chapter6 PreparationOverview..............................................67
Site Preparation Checklist for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Environmental Requirements and Specifications for EX Series Switches . . . . . . 68
GeneralSiteGuidelines..............................................72
SiteElectricalWiringGuidelines.......................................73
Chassis Physical Specifications for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . 73
Rack Requirements.................................................74
CabinetRequirements...............................................75
Clearance Requirements for Airflow and Hardware Maintenance for EX4500
Switches ......................................................76
Chapter 7 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
AC Power Supply Specifications for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . 79
AC Power Cord Specifications for an EX4500 Switch . . . . . . . . . . . . . . . . . . . . . . 80
DC Power Specifications for EX4500 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Grounding Cable and Lug Specifications for EX4500 Switches . . . . . . . . . . . . . . 84
Calculating the EX Series Switch Fiber-Optic Cable Power Budget . . . . . . . . . . . 85
Calculating the EX Series Switch Fiber-Optic Cable Power Margin . . . . . . . . . . . . 86
Chapter 8 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Pluggable Transceivers Supported on EX4500 Switches . . . . . . . . . . . . . . . . . . . 89
Pluggable Transceivers Supported on EX Series Switches . . . . . . . . . . . . . . . . . . 90
SFP+ Direct Attach Copper Cables for EX Series Switches . . . . . . . . . . . . . . . . . . 91
CableSpecifications.............................................91
Standards Supported by These Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
ManagementCableSpecifications.....................................97
Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation,
andDispersion.................................................98
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . . 98
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 99
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EX4500 Switch Hardware Guide