High-Density PoE+ Power and Enterprise Scalability — Juniper EX3400-48P
Product Description
The Juniper EX3400-48P is a high-density, managed PoE+ Ethernet switch built for enterprise networks that demand robust Gigabit connectivity with advanced management and scalability. With 48 PoE+ ports and 4 flexible uplinks, it can power devices like IP phones, access points, and cameras directly over the network, reducing cabling and infrastructure costs.
Model Type: Managed Gigabit Ethernet Switch (Layer 2 / Layer 3)
Category: High-Density PoE+ Switch for Enterprise Networks
Key Features
• 48 × 10/100/1000BASE-T PoE+ Ports – All ports support IEEE 802.3at PoE+, ideal for IP phones, wireless access points, cameras, and IoT devices.
• 4 × Uplink Ports (1G/10G Combo) – Flexible uplinks supporting RJ-45 or SFP/SFP+ for fiber or copper connectivity.
• Virtual Chassis Technology – Combine up to 10 EX3400 switches into a single logical device for simplified management and scalable networks.
• Fanless / Optional Fans – Quiet operation in offices and classrooms; optional fans for higher density or ambient temperatures.
• Switching Capacity: 176 Gbps
• Forwarding Performance: ~131 Mpps wire-speed forwarding
• PoE Power Budget: Up to ~740W to support multiple PoE devices simultaneously.
• Advanced Management: Junos OS with CLI, Web GUI, SNMP, automation, and monitoring.
• Security & VLANs: Supports up to 4,096 VLANs, QoS, STP/RSTP/MSTP, and advanced security policies.
• High Availability: Redundant power supplies and Virtual Chassis support for mission-critical deployments.
Technical Specs at a Glance
| Specification | Details |
|---|---|
| Ports | 48 × Gigabit PoE+ + 4 × combo uplinks (RJ-45/SFP/SFP+) |
| Switching Capacity | 176 Gbps |
| Forwarding Rate | ~131 Mpps |
| PoE Standard | IEEE 802.3at PoE+ (backward compatible with 802.3af) |
| PoE Budget | ~740W total |
| Fan | Fanless / Optional fan modules |
| Management | Junos OS, CLI, Web GUI, SNMP |
| VLANs | Up to 4,096 VLANs |
| Dimensions | 17.5 × 1.75 × 16.0 in (approx) |
| Weight | ~16 lb (7.3 kg) |
| Operating Temp | 0°C – 40°C |
Typical Use Cases
• Large enterprise networks and branch offices
• Retail chains requiring high PoE capacity
• Classrooms, labs, and collaborative workspaces
• VoIP and wireless deployment backbones
• IoT-heavy networks needing centralized PoE management








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