Juniper EX4300 32-Port 1GbE SFP Layer 3 Managed Switch with 4 SFP+ and 2 QSFP+ Uplinks

The Juniper EX4300-32F is a 32-port 1GBASE-X SFP Layer 3 managed network switch with 4 SFP+ (10GbE) and 2 QSFP+ (40GbE) uplink ports, running Juniper Junos OS. Designed for enterprise access and aggregation layer deployments, it delivers wire-rate L3 forwarding, Virtual Chassis for multi-switch stacking, and comprehensive Junos automation for scalable, programmable enterprise networking.

Key Features

• 32x 1GbE SFP ports for high-density fiber access layer connectivity
• 4x SFP+ (10GbE) uplinks for aggregation layer connectivity
• 2x QSFP+ (40GbE) uplinks for high-speed backbone connections
• Juniper Virtual Chassis — stack up to 10 switches as a single logical device
• Junos OS — consistent, reliable network operating system with full automation support
• Layer 3 — full routing with OSPF, BGP, IS-IS, and MPLS

Product Specifications

• Part Number: EX4300-32F
• Manufacturer: Juniper Networks
• OEM Status: OEM
• Model: EX4300-32F
• Ports: 32x 1GbE SFP + 4x SFP+ + 2x QSFP+
• Switching Layer: Layer 3
• Form Factor: 1U Rack-mountable

Switch & Port Specifications

• SFP Ports: 32x 1GBASE-X (fiber SFP)
• SFP+ Ports: 4x 10GbE
• QSFP+ Ports: 2x 40GbE
• Switching Capacity: 128 Gbps
• Forwarding Rate: 95.2 Mpps
• MAC Table: 96K entries

Network & Protocol Specifications

• Routing: OSPF, BGP, IS-IS, RIP, MPLS
• Management: Junos OS CLI, NETCONF, REST, Junos Space
• VLAN: IEEE 802.1Q (4094 VLANs)
• QoS: 8 queues per port, DSCP, 802.1p
• Stacking: Virtual Chassis (up to 10 switches)
• Security: 802.1X, MACsec, DHCP snooping, Dynamic ARP inspection

Use Cases

• Enterprise fiber access layer with 32 SFP ports for structured cabling environments
• Aggregation layer switch with 10GbE and 40GbE uplinks
• Juniper Virtual Chassis deployments for multi-switch logical stacking
• Campus and enterprise network deployments running Junos OS automation

Compatibility

• Compatible with standard 1GbE SFP transceivers and DAC cables
• SFP+ ports support 10GBASE-SR/LR transceivers and DAC/AOC
• QSFP+ ports support 40GBASE-SR4/LR4 and 4x10G breakout
• Virtual Chassis compatible with EX4300 series switches

Frequently Asked Questions

What is Juniper Virtual Chassis?

Virtual Chassis allows up to 10 EX4300 switches to operate as a single logical device — sharing a common management plane, control plane, and configuration while appearing as one switch to the network.

Does the EX4300-32F support MPLS?

Yes — the EX4300-32F supports MPLS on Junos OS, enabling L2VPN, L3VPN, and VPLS services for enterprise and service provider edge deployments.

What SFP transceivers are compatible?

The EX4300-32F supports standard 1000BASE-SX, 1000BASE-LX, and 1000BASE-ZX SFP transceivers as well as Juniper-compatible SFP DAC cables — verify with Juniper's transceiver compatibility list for third-party options.

The Juniper EX4300-32F delivers 32-port 1GbE SFP switching with 10GbE and 40GbE uplinks and Virtual Chassis stacking on Junos OS — a proven enterprise access and aggregation layer switch for scalable, automated campus networking. Order today and build a reliable, programmable enterprise network with Juniper EX4300.