JUNIPER EX4300-48T 48-PORT GIGABIT SWITCH EX4300-48T-AFO 2xAC

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)

Weight

• 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)
• 350 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

350 W AC dual load-sharing hot-swappable internal redundant power supplies

PoE Budget

0 W

Maximum Current Inrush

50 amps

Minimum number of PSUs required for fully loaded chassis

1 per switch

Environment

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

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

37.8

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