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Juniper EX4300 Series User Manual

Juniper EX4300 Series
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¡Atención! Antes de manipular el chasis de un equipo o trabajar cerca de una fuente de
alimentación, desenchufar el cable de alimentación en los equipos de corriente alterna
(CA).
Varning! Innan du arbetar med e chassi eller nära strömförsörjningsenheter skall du för
växelströmsenheter dra ur nätsladden.
DC Power Electrical Safety Guidelines for EX4300
Switches
A DC-powered device is equipped with a DC terminal block that is rated for the power requirements
of a maximally congured device.
For permanently connected equipment, a readily accessible disconnect device shall be incorporated
external to the equipment.
For pluggable equipment, the socket-outlet shall be installed near the equipment and shall be easily
accessible.
Be sure to connect the ground wire or conduit to a solid central oce earth ground.
A closed loop ring is recommended for terminang the ground conductor at the ground stud.
Run two wires from the circuit breaker box to a source of 48 VDC.
A DC-powered device that is equipped with a DC terminal block is intended only for installaon in a
restricted-access locaon.
NOTE: Primary overcurrent protecon is provided by the building circuit breaker. This breaker
must protect against excess currents, short circuits, and earth grounding faults in accordance
with NEC ANSI/NFPA 70.
Ensure that the polarity of the DC input wiring is correct. Under certain condions, connecons with
reversed polarity might trip the primary circuit breaker or damage the equipment.
The marked input voltage of –48 VDC for a DC-powered device is the nominal voltage associated
with the baery circuit, and any higher voltages are only to be associated with oat voltages for the
charging funcon.
388

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Juniper EX4300 Series Specifications

General IconGeneral
Product SeriesEX4300 Series
Power ConsumptionVaries by model and configuration
Virtual Chassis TechnologyUp to 10 switches
SoftwareJunos OS
Ports24-port and 48-port models
10GBASE SFP+ PortsUp to 8 ports
40GBASE QSFP+ Ports2
Uplink PortsUp to 4 ports
Jumbo FramesUp to 9216 bytes
Operating Temperature0°C to 45°C
Relative Humidity5% to 90% noncondensing
Input Voltage100 to 240V AC
Power SupplyAC or DC
Power Supply OptionsAC or DC
StackingYes
Layer 2 FeaturesIncludes VLAN, STP, RSTP, MSTP, LACP
Layer 3 FeaturesOSPF, BGP
ManagementCLI, Web GUI, SNMP
Security FeaturesDHCP snooping
QoS8 queues per port, DSCP
Storage Temperature-40°C to 70°C

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