What ports does the Juniper EX3400-48T have?

It includes 48 x 10/100/1000BASE-T Gigabit Ethernet RJ45 ports for hosts, 4 x 1/10GbE SFP/SFP+ uplinks, and 2 x 40GbE QSFP+ ports, totaling 54 ports. This setup supports high-density access switching with flexible high-speed uplinks to core infrastructure.

What is the switching capacity and throughput?

Switching capacity is 168 Gbps unidirectional / 336 Gbps bidirectional (64-byte packets), with 250 Mpps Layer 2/3 packet forwarding rate. Backplane is 160 Gbps with QSFP+ ports, enabling wire-speed performance in demanding environments.

Does it support Virtual Chassis?

Yes, Virtual Chassis technology allows interconnecting up to 10 EX3400 switches over uplink ports, managed as a single logical device with 160 Gbps backplane capacity, simplifying scaling and operations.

What are the power and environmental specs?

Max power consumption is 120W with 1 x 150W AC PSU included (optional 600W/920W). Operates 0°C to 40°C, 10-85% humidity noncondensing, front-to-back airflow, redundant fans, 35 dB acoustic noise.

What management features are available?

Managed via Junos OS with SNMP support, powered by dual-core 1 GHz CPU, 2 GB ECC DRAM, 2 GB flash. Supports Layer 2/3 protocols including up to 32K MAC addresses, 4096 VLANs, IPv4/IPv6 routing.

What are the physical dimensions and weight?

1U rack-mountable: base unit 17.36 x 1.72 x 13.78 in (44.1 x 4.37 x 35 cm), up to 17.36 x 1.72 x 15.19 in with PSU/fans. Weight: 10.49 lb base, max 12.65 lb (5.74 kg) fully equipped.

EX3400-48T - Juniper EX3400-48T 48x1GbE 4x10GbE 2x40GbE Ethernet Switch

Name: Juniper EX3400-48T 48x1GbE 4x10GbE 2x40GbE Ethernet Switch
Brand: Juniper
SKU: EX3400-48T
Price: 4095 USD
Availability: InStock

EX3400-48T - Juniper EX3400-48T 48x1GbE 4x10GbE 2x40GbE Ethernet Switch | US IT Hardware

Product overview

The Juniper Networks EX3400-48T is a 1U rack-mountable Layer 2/3 managed Ethernet switch designed for enterprise access environments. It features 48 x 10/100/1000BASE-T Gigabit Ethernet RJ45 ports for high-density connectivity, complemented by 4 x 1/10GbE SFP/SFP+ and 2 x 40GbE QSFP+ uplink ports, providing a total port density of 54. With a switching capacity of 168 Gbps unidirectional (336 Gbps bidirectional) and 250 Mpps Layer 2/3 throughput, it handles demanding converged data, voice, and video traffic. Powered by a dual-core 1 GHz CPU, 2 GB ECC DRAM, and 2 GB flash, it runs Junos OS with SNMP management. Virtual Chassis technology links up to 10 switches as one logical device. It includes a 150W AC PSU, redundant fans, front-to-back airflow, and operates from 0°C to 40°C. Dimensions are 17.36 x 1.72 x 13.78 in (base), weighing up to 12.65 lb fully equipped. Ideal for campus wiring closets and scalable deployments.

48x 1GbE + 4x10GbE/2x40GbE ports, 54 total
336 Gbps bidirectional, 250 Mpps throughput
Virtual Chassis up to 10 switches, 160 Gbps backplane
Dual-core 1GHz CPU, 2GB ECC DRAM, Junos OS
Max 120W, redundant fans, front-to-back airflow
1U rack-mount, 0-40°C operation, 35 dB noise

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	EX3400-48T
Brand	Juniper
Condition	New
CPU	Dual Core 1 GHz
DRAM	2 GB with ECC
Model	EX3400-48T
Redundancy	Redundant fans; Virtual Chassis support for up to 10 switches
Technology	Store and forward switching engine
Product Line	EX3400 Series
Product Type	Ethernet Switch
Management Interface	Junos OS management; SNMP support

Compatible systems

EX3400-48T is compatible with Junos OS and supports Virtual Chassis stacking with up to 9 additional EX3400 switches

Juniper Networks EX3400 Series
Model: Virtual Chassis
Form factor: Stackable
Generation: N/A
Up to 10 EX3400 switches can be linked as a single logical device via Virtual Chassis interconnect

Best for

Campus Wiring Closet
Provides 48 Gigabit Ethernet ports with 4x10GbE and 2x40GbE uplinks for connecting endpoints in enterprise buildings, supporting Virtual Chassis for up to 10 switches as a single managed device.
Data Center Access
Delivers 336 Gbps bidirectional switching and front-to-back airflow, suitable for GbE access deployments with high packet forwarding rates of 250 Mpps.
Enterprise Branch
Offers Layer 2/3 features, 168 Gbps capacity, and Junos OS management for scalable converged voice/video/data networks in branch offices.
Scalable Aggregation
Virtual Chassis interconnect at 160 Gbps backplane enables linking multiple units, reducing management complexity in growing networks.

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Flash Storage	2 GB

CPU	Dual Core 1 GHz

Network & Communication

Backplane	160 Gbps (with QSFP+ ports) or 80 Gbps (with SFP+ ports); supports Virtual Chassis interconnect to link up to 10 switches as a single logical device
Switching Capacity	168 Gbps unidirectional; 336 Gbps bidirectional (maximum with 64-byte packets)
Packet Forwarding Rate	250 Mpps (Layer 2/Layer 3 throughput with 64-byte packets)

Power Supplies	1 x 150W AC PSU (JPSU-150-AC-AFO) included; redundant fans; optional 600W and 920W AC power supplies available
Power Supply Type	AC
Max System Power Consumption	120 W

Physical Characteristics

Weight	Base unit (no power supply or fan module): 10.49 lb (4.76 kg) maximum; with single power supply and two fan modules: 12.65 lb (5.74 kg) maximum
Dimensions	Base unit: 17.36 x 1.72 x 13.78 in (44.1 x 4.37 x 35 cm); with power supply installed: 17.36 x 1.72 x 15.05 in (44.1 x 4.37 x 38.24 cm); with power supply and front module installed: 17.36 x 1.72 x 15.19 in (44.1 x 4.37 x 38.58 cm)
Form Factor	1U rack-mountable

Environmental

Airflow	Front-to-back
Acoustic Noise	35 dB
Storage Humidity	0% to 95% (noncondensing)
Operating Humidity	10% to 85% (noncondensing)
Storage Temperature	-40°C to 70°C
Operating Temperature	0°C to 40°C

Interface/Ports

Uplink Ports	4 x 1/10GbE SFP/SFP+ ports; 2 x 40GbE QSFP+ ports
Ethernet Ports	48 x 10/100/1000BASE-T Gigabit Ethernet ports (RJ45)
Total Port Density	54 ports (48 host ports + four 1/10 GbE and two 40GbE uplink ports)

Juniper EX3400-48T 48x1GbE 4x10GbE 2x40GbE Ethernet Switch