Juniper EX4300-48MPAccess Switches

High-Performance Multigigabit & PoE++ Connectivity — Juniper EX4300-48MP Enterprise-Grade Switch.

The Juniper EX4300-48MP is a powerful managed multigigabit Ethernet switch engineered for high-density enterprise access networks. Featuring 48 multigigabit RJ-45 ports capable of speeds up to 10 Gbps, generous PoE++ power delivery, and 4×40 GbE QSFP+ ports for stacking or uplinks, it’s ideal for demanding environments with heavy wireless and IoT traffic. Running on Juniper’s Junos OS, the switch delivers advanced Layer 2/Layer 3 networking, robust security, and Virtual Chassis stackability — giving you flexibility, scalability, and enterprise reliability in one compact chassis.

Model: EX4300-48MP
Series: Juniper EX4300 Ethernet Switch
Switch Type: Managed Multigigabit Layer 2/Layer 3 Switch with PoE++
Operating System: Juniper Junos OS (enterprise-grade OS across Juniper networking platforms)

Key Features & Overview

Ports & Connectivity

• 48 × Multigigabit RJ-45 Access Ports:

  • 24 × 10/100/1000 Mbps standard Gigabit

  • 24 × multigigabit ports supporting 100 Mbps, 1 Gbps, 2.5 Gbps, 5 Gbps, and 10 Gbps speeds — perfect for high-bandwidth wireless APs, workstations, and other multigigabit devices.

• 4 × 40 GbE QSFP+ Ports: Used as Virtual Chassis Ports (VCPs) for stacking or high-speed uplinks to aggregation/core switches.

• Optional Uplink Modules: Supports additional uplinks (e.g., 8×10 GbE or 2×40 GbE/100 GbE) via EX-UM series modules (sold separately).

Power over Ethernet & PoE++

• PoE/PoE+/PoE++ Support:
  Ports deliver up to 95 W per port, providing power for demanding devices such as multisensor cameras, high-end Wi-Fi APs, thin clients, and IoT endpoints.

• High PoE Budget: Typically up to 1,100 W (depending on PSU configuration), enabling dense PoE deployments without external injectors.

Performance & Capacity

• Switching Capacity: Up to 928 Gbps (bidirectional) — designed for high-throughput enterprise environments.

• Forwarding Rate: ~714 Mpps (million packets per second).

• MAC Address Table: ~64,000 entries — ample capacity for large networks.

• VLANs Supported: Up to 4,093 VLANs with robust segmentation support.

Layer 2 / Layer 3 Features

• Layer 2 Switching: VLANs, STP/RSTP/MSTP, LACP, QoS, ACLs.

• Layer 3 Routing: Static routing with support for advanced routing protocols depending on Junos OS configuration.

• Security: Includes MAC limiting, dynamic ARP inspection, DHCP snooping, and optional MACsec encryption on access and uplink ports for enhanced traffic protection.

Management & Stackability

• Management: Junos CLI, SNMP, Junos Space, and Network Director (GUI management available for EX4300-48MP in newer Junos versions).

• Virtual Chassis Technology: Stack up to 10 EX4300 switches to operate as a single logical switch — simplifying management and scaling.

• High Availability: Hot-swappable fans and redundant PSU options (second PSU sold separately).

Hardware & Physical Specs

• Form Factor: 1 RU rack-mount chassis.

• Airflow: Front-to-back airflow (AFO) suited for data center or wiring closet environments.

• CPU & Memory: Dual-core 2.2 GHz with high memory and flash storage for robust performance.

• Environment: Operating temperature typically 0 °C to 45 °C (varies by regional spec).

Typical Use Cases

• High-density enterprise access layer with multigigabit and PoE++ support.

• Campus networks with heavy wireless backhaul requirements.

• Powering advanced PoE devices like 802.11ax/ax Wave 2 APs and multisensor cameras without external injectors.

• Scalable stacking deployments with simplified management via Virtual Chassis