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EX3400-48P-TAA
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EX3400 48PORT 10/100/1000BASET POE+ 4X1/10G SFP/SFP+ 2X40G Q...
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EX3400-48P-TAA
- Description:
- EX3400 48PORT 10/100/1000BASET POE+ 4X1/10G SFP/SFP+ 2X40G QSFP+
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- Brand:
- Juniper
- GTIN:
- 832938071018
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EX3400-48P-TAA Overview
EX3400-48P-TAA is a high-performance, rack-mount Ethernet switch built on a robust and scalable architecture that supports both Layer 2 and Layer 3 operations. Designed for modern enterprise and campus networks, it offers 48 PoE+ enabled 10/100/1000 ports alongside 4 dedicated 10Gb SFP+ uplink ports, ensuring reliable connectivity for high-density environments.
Engineered for optimal power utilization and future-proof network expansion, the EX3400-48P-TAA supports Virtual Chassis stacking for simplified management and enhanced performance. Its versatile design and advanced switching capabilities make it an ideal choice for applications ranging from branch networks to mission-critical enterprise systems.
EX3400-48P-TAA price is is available on request. Get immediate quote.
Request bulk order quote for EX3400-48P-TAA for additional pricing. Browse the full Juniper Ex3400 Series Ethernet Switches series or explore all Juniper products.
EX3400-48P-TAA Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- N/A
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 48 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair / Fiber
- Redundant Power Supply Supported
- No
- Manufacturer Part Number
- EX3400-48P-TAA
- Uplink Configuration
- 10G
- IOS
- LAN Base
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 48 PoE 10/100/1000 ports and 4 10Gb SFP+ uplink ports
- Flash Memory
- 256 MB
- Switching Capacity
- 1440 Gbps
- Switching Capacity with Stacking
- 1440 Gbps
- Product Name
- Juniper EX3400-48P-TAA Ethernet Switch
- Height
- 1.73 inches
- Width
- 17.5 inches
- Depth
- 11.8 inches
- Weight
- 13 lbs
EX3400-48P-TAA Use Case
Smart Office Edge for Unified Communications and IoT
In a 1,500-seat smart office deployment, the EX3400-48P-TAA delivers 48 PoE+ ports to power Wi-Fi 6 APs, IP phones and environmental sensors while four 1/10G SFP+ and two 40G QSFP+ uplinks enable high-speed backhaul to the data center. The result is centralized PoE management, automated VLAN segmentation and simplified Junos OS provisioning, delivering up to 50% faster rollout of UC and IoT services with full redundancy via MLAG.
Branch Office Aggregation for Retail and Security
A national retail chain uses the EX3400-48P-TAA at every 2,000 sq ft store to aggregate POS terminals, surveillance cameras and local servers. The 48-port 10/100/1000BASE-T PoE+ switch powers PoS and HD cameras, while dual 40G QSFP+ uplinks provide high-capacity transport to regional hubs. This architecture ensures 99.99% uptime with active/active MLAG, centralized policy enforcement and simplified firmware management via Junos Space.
Top-of-Rack Switch for Virtualized Data Center Fabrics
In a VMware NSX or EVPN/VXLAN environment, the EX3400-48P-TAA serves as a top-of-rack leaf switch connecting 48 server NICs at 1/10G speeds and two 40G QSFP+ links to the spine. Built-in MLAG and hardware-accelerated overlay forwarding deliver sub-microsecond latency and non-blocking throughput for east-west traffic. The outcome is a scalable 2-tier fabric supporting 10K+ VMs, automated provisioning and simplified life-cycle management under Juniper Apstra.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| EX3400-48P-TAA |  EX3400-48T-AFI |  EX3400-48T |  EX3400-24P |  EX3400-24T-DC | |
|---|---|---|---|---|---|
| Depth | 11.8 inches | 12 inches | 12.4 inches | 11 inches | 11 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 32 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.73 inches | 1.73 inches | 1.75 inches | 1.75 inches |
| IOS | LAN Base | IP Lite | LAN Base | IP Lite | LAN Base |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | EX3400-48P-TAA | EX3400-48T-AFI | EX3400-48T | EX3400-24P | EX3400-24T-DC |
| Media Type Supported | Twisted Pair / Fiber | Twisted Pair | Twisted Pair | Twisted Pair / Fiber / Combo | Twisted Pair |
| Memory | 256 MB | 512 MB | 512 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 48 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports |
| POE Support | POE+ | Non POE | Non POE | POE+ | Non POE |
| Port/Expansion Slot Details | 48 PoE 10/100/1000 ports and 4 10Gb SFP+ uplink ports | 48 fixed 10/100/1000 Ethernet ports and 4 dedicated 1G SFP uplink ports | N/A | 24 PoE ports and 4 SFP uplink ports | N/A |
| Power Consumption | N/A | N/A | 95W | 370 W | 25 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | DC |
| Product Name | Juniper EX3400-48P-TAA Ethernet Switch | Juniper EX3400-48T-AFI Ethernet Switch | Juniper EX3400-48T Ethernet Switch | Juniper EX3400-24P Ethernet Switch | Juniper Networks EX3400-24T-DC Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | No | Yes | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1440 Gbps | 128 Gbps | 176 Gbps | 128 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 1440 Gbps | 256 Gbps | 352 Gbps | 320 Gbps | N/A |
| Uplink Configuration | 10G | 1G | 1G | 1G | 1G |
| Weight | 13 lbs | 10 lbs | 14 lbs | 10 lbs | 6 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
A
Andrew Carter
4
TAA version worked exactly as expected.
D
Daniel Foster
5
Reliable access switch for phones and APs.
S
Stephen Turner
5
Good uptime record.
V
Victor Ellis
4
Strong enterprise switch.
Questions & Answers
What is the Juniper EX3400-48P-TAA and what are its key features?
The Juniper EX3400-48P-TAA is a TAA-compliant 1U Ethernet switch offering 48 10/100/1000BASE-T PoE+ ports, 4 SFP/SFP+ 1/10GbE uplinks, 2 QSFP+ 40GbE uplinks, Virtual Chassis stacking, and the full Junos OS feature set for resilient, high-performance enterprise networking.
What PoE+ power budget does the EX3400-48P-TAA support?
The EX3400-48P-TAA delivers up to 740 W of total PoE+ power, supporting 30 W per port across 48 ports subject to the aggregate budget.
How many 10G and 40G uplink ports are available on the EX3400-48P-TAA?
It provides 4 SFP/SFP+ ports configurable at 1/10 GbE and 2 QSFP+ ports for 40 GbE uplinks, enabling flexible high-speed aggregation.
Is the EX3400-48P-TAA compliant with the U.S. Trade Agreements Act (TAA)?
Yes. The EX3400-48P-TAA chassis and power supplies are manufactured in TAA-approved facilities to meet U.S. federal procurement requirements.
Can the EX3400-48P-TAA be stacked and what is the maximum Virtual Chassis size?
Yes. Using built-in Virtual Chassis ports or 40 GbE QSFP+ cables, you can stack up to 10 EX3400 switches for unified management and control.
What is the switching capacity and forwarding rate of the EX3400-48P-TAA?
It delivers up to 1.28 Tbps of non-blocking switching capacity and a forwarding rate of 952 Mpps for consistent wire-speed performance.
Which management interfaces are available on the EX3400-48P-TAA?
Management options include an RJ-45 console port, an out-of-band 10/100/1000 Mbps Ethernet management port, and USB Type-A/B ports for USB media and configuration.
Does the EX3400-48P-TAA run Junos OS and what key features does it include?
Yes. It runs Junos OS with enterprise features such as EVPN-VXLAN, MLAG, advanced QoS, MACsec readiness, and policy-based automation via Junos Telemetry.
What warranty and support options are available for the EX3400-48P-TAA?
Juniper offers a limited lifetime hardware warranty plus optional Juniper Care and Juniper Care Plus support plans for expedited hardware replacement and 24×7 software support.
What security features does the EX3400-48P-TAA provide?
It includes port-based MACsec encryption, dynamic ARP inspection, DHCP snooping, Storm Control, Unified Access Control (UAC), and role-based access policies.
What are typical deployment use cases for the EX3400-48P-TAA?
Common use cases include campus access/distribution, branch office aggregation, high-density PoE+ deployments for VoIP and surveillance, and converged IoT access.
How energy efficient is the EX3400-48P-TAA?
It features variable-speed fans, front-to-back airflow, high-efficiency 80 PLUS Platinum power supplies, and an idle power draw of approximately 60 W (non-PoE).
Which Layer 2 and Layer 3 protocols are supported on the EX3400-48P-TAA?
Layer 2 protocols include VLAN, RSTP/MSTP, QinQ, LAG. Layer 3 support covers OSPF, BGP, RIP, VRRP, PIM, and static routing.
How many PoE+ devices can the EX3400-48P-TAA power simultaneously?
With a 740 W budget and 30 W per port maximum, it can power 24 devices at full 30 W or up to 48 devices at 15.4 W average per port.
How do you configure Virtual Chassis on the EX3400-48P-TAA?
Connect QSFP+ stacking cables between EX3400 ports, then in Junos CLI use set chassis virtual-chassis member <id> …, commit the configuration, and verify with show virtual-chassis status.
Which SFP/SFP+ modules are compatible with the EX3400-48P-TAA?
Compatible modules include Juniper EX-SFP-1GE-SX/LX, EX-SFP+-10GE-SR/LR, and certified third-party SFP/SFP+ optics supporting 1/10 GbE.