Juniper EX3400-48P 48-Port PoE+ Gigabit Ethernet Switch w/ Dual PSU
The Juniper EX3400-48P Switch is a 48-port Gigabit Ethernet managed switch with full PoE+ support, designed for enterprise campus and branch networks. It provides high-performance Layer 2 and Layer 3 features, 10GbE/40GbE uplinks for scalable connectivity, and Virtual Chassis stacking capability, all in a compact 1U rack-mount form factor running on Junos OS. It’s part of the EX3400 Series, known for flexibility and high availability.
Key Specifications & Features
Ports & Connectivity
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48 × 10/100/1000BASE-T PoE+ ports – all support PoE+ to power devices like IP phones, APs, and cameras.
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4 × 10GbE SFP+ uplinks for high-speed fiber connections.
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2 × 40GbE QSFP+ ports for high-bandwidth uplinks or stacking.
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Front-to-back airflow and rack-mountable 1U form factor.
Performance
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Switching capacity: 336 Gbps.
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Forwarding rate: 250 Mpps (million packets per second).
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MAC address table: up to ~32,000 entries.
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Supports up to 4,096 VLANs.
PoE / Power
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PoE+ budget: ~740 W with one power supply (can support more with redundancy).
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Each PoE+ port can deliver up to 30 W per IEEE 802.3at.
Software & Management
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Runs Junos OS, Juniper’s enterprise-grade operating system.
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Supports standard management protocols: SNMP, RMON, SSH, HTTP/HTTPS, Telnet.
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Virtual Chassis technology: stack up to 10 switches to operate as one logical device.
Security & Features
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MACsec encryption for secure link-layer traffic.
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IEEE 802.1X, VLAN, QoS, dynamic ARP inspection, IP routing, etc.
Use Cases
✔ Enterprise campus access layer
✔ Powering PoE devices like VoIP phones, wireless APs, CCTV
✔ Scalable stacks using Virtual Chassis
✔ High-speed uplinks with fiber SFP+/QSFP+
✔ Secure network environments with MACsec
Notes
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Optics (SFP/SFP+/QSFP+) are sold separately — you must add your own transceivers.
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Performance figures and features may vary slightly by region and hardware revision. Always check the exact spec sheet or reseller listing before purchase.











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