Juniper

Juniper EX3400-48T-AFI 48x1GbE 4x10GbE 2x40GbE L2/3 Switch

Name: Juniper EX3400-48T-AFI 48x1GbE 4x10GbE 2x40GbE L2/3 Switch
Brand: Juniper
SKU: EX3400-48T-AFI
Price: 690 USD
Availability: InStock

MPN: EX3400-48T-AFI·By: Juniper

Part #:EX3400-48T-AFINewIn stock

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Juniper EX3400-48T-AFI 48x1GbE 4x10GbE 2x40GbE L2/3 Switch-

$690.00

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Juniper EX3400-48T-AFI 48x1GbE 4x10GbE 2x40GbE L2/3 Switch-

$690.00

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Product overview

The Juniper Networks EX3400-48T-AFI is a fixed-configuration Layer 2/3 Ethernet switch designed for enterprise access environments. It features 48 x 10/100/1000BASE-T RJ-45 host ports, 4 x 1/10GbE SFP/SFP+ uplink ports, and 2 x 40GbE QSFP+ uplink ports, delivering a total port density of 54 ports. With a switching capacity of 336 Gbps bidirectional and Layer 2/3 throughput of 250 Mpps, it supports high-performance data, voice, and video convergence. The 160 Gbps backplane enables Virtual Chassis technology, interconnecting up to 10 switches as a single logical device. Management is simplified via Juniper Junos OS and Mist Wired Assurance with Zero Touch Provisioning. Physical specs include 1U rack-mountable form factor, back-to-front airflow, redundant field-replaceable fans, and a single 150W AC PSU (typical 120W consumption). IEEE 802.3 standards compliance ensures reliability in demanding networks.

48x Gigabit + 4x10GbE/2x40GbE ports, 54 total
336 Gbps switching, 250 Mpps throughput
160 Gbps Virtual Chassis backplane, up to 10 units
1U rack-mount, back-to-front airflow
Junos OS + Mist ZTP management
Redundant fans, 150W AC PSU

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Featuring

Manufacturer part #	EX3400-48T-AFI
Brand	Juniper
Condition	New
Model	EX3400-48T-AFI
Product Line	EX3400 Ethernet Switch
Product Type	Fixed-configuration Ethernet Switch with Virtual Chassis
MAC Address Table	Not specified in available sources
Management Software	Juniper Networks Junos OS; Juniper Mist Wired Assurance
Supported Protocols	IPv4 routing (OSPF v2/v3, IGMP v1/v2/v3, VRRP, BFD); RPM; Unicast RPF; EX-48-EFL license for advanced features
Supported Standards	IEEE 802.3at PoE+, 802.3u 100BASE-T, 802.3z 1000BASE-X, 802.3x Pause Frames/Flow Control
Management Interface	Juniper Networks Virtual Chassis; Cloud-ready ZTP for Juniper Mist Wired Assurance
Compliance Certifications	IEEE 802.3 standards compliance

Network & Communication

Backplane Speed	160 Gbps
Switching Capacity	336 Gbps bidirectional
Layer 2/3 Throughput	250 Mpps (maximum with 64-byte packets)

Power Consumption

Max Wattage	150W
Typical Power	120W
Power Supplies	1 x AC PSU (JPSU-150-AC-AFI); field-replaceable redundant power supplies supported up to 920W each

Physical Characteristics

Dimensions	17.4 x 1.7 x 13.8 in (43.7 x 4.4 x 35 cm) (W x H x D)
Rack Units	1U
Form Factor	1 rack unit (1U); fixed-configuration
Status LEDs	System, port status, power, fan indicators
Mounting Type	Rack-mountable
Redundant Fans	Yes, field-replaceable
Airflow Direction	Back-to-front

Interface/Ports

Port Density	54 ports total (48 host + 4 1/10GbE + 2 40GbE uplinks)
Ethernet Ports	48 x 10/100/1000BASE-T RJ-45 host ports; 4 x 1/10GbE SFP/SFP+ uplink ports; 2 x 40GbE QSFP+ uplink ports

Compatible systems

Runs Juniper Junos OS; Virtual Chassis up to 10 switches

Best for

Enterprise Access Layer
Provides 48 Gigabit host ports with multi-gigabit uplinks for high-density user connectivity in office environments, supporting converged data, voice, and video with 336 Gbps switching capacity.
Virtual Chassis Stacking
160 Gbps backplane allows up to 10 switches to interconnect as one logical device, simplifying management and scaling for growing campus networks.
Data Center Aggregation
4x 1/10GbE SFP+ and 2x 40GbE QSFP+ uplinks deliver 250 Mpps throughput, ideal for edge aggregation with Layer 3 routing features like OSPF and VRRP.
Cloud-Ready Deployment
Juniper Mist Wired Assurance with ZTP enables automated provisioning, reducing operational complexity in distributed enterprise sites.

Frequently asked questions

What ports does the EX3400-48T-AFI provide?

It includes 48 x 10/100/1000BASE-T RJ-45 host ports, 4 x 1/10GbE SFP/SFP+ uplink ports configurable as GbE or 10GbE, and 2 x 40GbE QSFP+ uplinks, totaling 54 ports. Optics are sold separately, supporting IEEE 802.3z and 802.3x standards.

What is the switching performance?

Offers 336 Gbps bidirectional switching capacity, 250 Mpps Layer 2/3 throughput with 64-byte packets, and 160 Gbps backplane for Virtual Chassis. Supports jumbo frames to 9216 bytes and up to 32,000 MAC addresses per system.

Does it support Virtual Chassis?

Yes, the 160 Gbps backplane enables interconnecting up to 10 EX3400 switches as a single logical device over uplink ports, simplifying management and providing pay-as-you-grow scalability for enterprise networks.

What are the power and physical specs?

1U rack-mountable (17.4 x 1.7 x 13.8 in), back-to-front airflow, 150W max AC PSU (120W typical), redundant field-replaceable fans. Weight around 12.65 lb with PSU and fans.

What management features are included?

Runs Juniper Junos OS with cloud-ready ZTP via Mist Wired Assurance. Supports IPv4 routing (OSPF v2/v3, IGMP, VRRP, BFD), RPM, Unicast RPF, and EX-48-EFL license for advanced Layer 3 features.

Is it suitable for enterprise access?

Yes, designed for converged data/voice/video access with high port density, 336 Gbps capacity, and Virtual Chassis support. Hardware-ready for Junos Fusion Enterprise to manage multiple wiring closets logically.

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