The EX4300 Multigigabit Ethernet Switch is a high-performance access switch designed for advanced branch and campus deployments. It supports multigigabit speeds of 100M/1/2.5/5/10GbE and PoE++ power delivery up to 95W per port, meeting the demands of Wi-Fi 6/802.11ac access points, IP telephony, surveillance, and IoT devices.
Cloud-ready and Zero-Touch Provisioning (ZTP)-enabled, the EX4300 integrates with Juniper Mist™ Wired Assurance to streamline deployment, configuration, and management. All ports are MACsec AES-256 compliant for enhanced security, and Juniper’s Virtual Chassis technology allows up to 10 switches to be managed as a single device.
Cloud-Driven Intelligence
With Juniper Mist Cloud and Mist AI™, the EX4300 enables automated operations, deep network visibility, and proactive troubleshooting. This simplifies IT workflows and enhances the performance of connected devices across campus environments.
Key Specifications
- Port Density: 100M/1/2.5/5/10GbE access ports; 10/25/40/100GbE uplinks
- Form Factor: 1 RU
- Power: PoE/PoE+/PoE++ up to 95W per port
- Switching Capacity: 960 Gbps
- Fabric: EVPN-VXLAN, Virtual Chassis
Features & Benefits
Juniper Mist Wired Assurance
Claim, configure, and troubleshoot EX4300 switches with minimal effort. Wired Assurance delivers AI-driven automation, anomaly detection, and service-level expectations (SLEs) to optimize device performance and reduce mean time to repair.
Virtual Chassis
Up to 10 EX4300 switches can operate as a single logical device with Juniper’s Virtual Chassis technology, simplifying management and reducing operational complexity while maintaining high performance and modular reliability.
PoE++ Support
Supports the 802.3bt PoE++ standard with up to 95W per port, ideal for high-powered devices like VDI terminals and access points. Full 802.3af PoE support ensures future-proofed network convergence across multiple device types.
MACsec AES256 Encryption
All access and uplink ports support IEEE 802.1AE MACsec AES256 encryption, offering 88 Gbps of near line-rate, hardware-based encryption to ensure secure communication and protect sensitive traffic.
Campus Fabric with EVPN-VXLAN
EX4300 switches form an IP fabric with EVPN-VXLAN overlay, extending Layer 2 connectivity across multiple enterprise sites. This open, scalable architecture supports consistent performance and policy enforcement across distributed environments.




