Physical Specifications
Backplane 320 Gbps Virtual Chassis Interconnect To Combine Up To 10 Units As A Single Logical Device
Uplink Module Options 4-Port Dual-Mode 10GbE/1GbE Module With Pluggable SFP+/SFP Optics
Dimensions (W X H X D)
  • 17.41 X 1.72 X 16.43 In (44.21 X 4.32 X 41.73 Cm)
  • Desktop Installation Width Noted Above, Rack-Mount Width Is 17.5 In (44.5 Cm)
  • Height: 1 Rack Unit (1 U)
  • EX4300 Switch (No Power Supply Or Fan Module): 13 Lb (5.9 Kg)
  • EX4300 Switch (With Single Power Supply And Two Fan Modules): 16.1 Lb (7.3 Kg)
  • 1100 W AC Power Supply: 2.4 Lb (1.1 Kg)
  • SFP+ Uplink Module: 0.44 Lb (0.2 Kg)
  • Fan Module: 0.33 Lb (0.15 Kg)
Rack Mountable 1 Rack Unit
Hardware Specifications
Switching Engine Model Store And Forward
DRAM 2 GB With Error Correcting Code (ECC)
Flash 2 GB
CPU 1.5 GHz Dual-Core PowerPC CPU
GbE Port Density Per System 56 (48 Host Ports + Four 40GbE Ports + Optional Fourport 1/10GbE Uplink Module)
10GbE Port Density Per System 4 (Uplink Module)
40GbE Port Density Per System 4
Packet Switching Capacities (Maximum With 64 Byte Packets) 248 Gbps (Unidirectional)/496 Gbps (Bidirectional)
Layer 2/Layer 3 Throughput (Mpps) (Maximum With 64 Byte Packets) 369 Mpps (Wire Speed)
Supported Optics
  • GbE SFP Optic/Connector Type: LC SFP Fiber Supporting SX (Multimode), LX (Single-Mode)
  • 10GbE SFP+ Optic/Connector Type: 10GbE SFP+ LC Connector, SR (Multimode), USR (Multimode), LR (Single-Mode), ER (Single-Mode), LRM (Multimode), And DAC (Direct-Attach Copper)
  • 40 GbE QSFP+ Optic/Connector Type: 40GbE QSFP+ LC Connector Type, SR (Multimode), DAC (Direct-Attach Copper)
  • 100 GbE QSFP28 Optic Type: 100GbE QSFP SR4, LR4, DAC (Direct-Attach Copper)
Physical Layer
  • Time Domain Reflectometry (TDR) For Detecting Cable Breaks And Shorts
  • Auto Medium-Dependent Interface/Medium-Dependent Interface Crossover (MDI/MDIX) Support
  • Port Speed Downshift/Setting Maximum Advertised Speed On 10/100/1000BASE-T Ports
  • Digital Optical Monitoring For Optical Ports
Power Options
Power Supply Rating 1100 W AC Dual Load-Sharing Hot-Swappable Internal Redundant Power Supplies
PoE Budget 900 W
Maximum Current Inrush 50 Amps
Minimum Number Of PSUs Required For Fully Loaded Chassis 1 Per Switch
Operating Temperature 32° To 113° F (0º To 45º C)
Storage Temperature -40º To 158º F (-40º To 70º C)
Relative Humidity (Operating) 10% To 85% (Noncondensing)
Relative Humidity (Non-Operating) 0% To 95% (Noncondensing)
Altitude (Operating) Up To 10,000 Ft (3,048 M)
Altitude (Non-Operating) Up To 16,000 Ft (4,877 M)
Cooling Airflow AFO (Front-To-Back Airflow)
Field-Replaceable Fans 2
Airflow PSU-7.5 Cubic Feet Per Minute (CFM); Fan-22 CFM
Total Maximum Airflow Throughput With Two Power Supplies 59 CFM
Noise Specifications
Noise Specifications Noise Measurements Based On Operational Tests Taken From Bystander Position (Front) And Performed At 23° C In Compliance With ISO 7779
Acoustic Noise In DBA 51.0
Safety And Compliance
Safety Certifications
  • UL-UL60950-1 (First Edition)
  • C-UL To CAN/CSA 22.2 No. 60950-1 (First Edition)
  • TUV/GS To EN 60950-1, Amendment A1-A4, A11
  • EN 60950-1 (2006 +A1:2009+A12:2010) Information Technology Equipment—Safety
  • IEC 60950-1 (2005 +A1:2009) Information Technology Equipment—Safety
Electromagnetic Compatibility Certifications
  • FCC 47CFR Part 15 Class A
  • EN 55022 Class A
  • ICES-003 Class A
  • VCCI Class A
  • AS/NZS CISPR 22 Class A
  • CISPR 22 Class A
  • EN 55024
  • EN 300386
  • CE
NEBS GR-1089-Core: EMC And Electrical Safety For Network Telecommunications Equipment
Environmental Reduction Of Hazardous Substances (ROHS) 6/6
Telco CLEI Code


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