Juniper EX4400-24X 24-Port 10G SFP+ Layer 3 Switch – 2x 100G QSFP28, Virtual Chassis, Redundant Power

Dense 10G fiber aggregation with 100G uplinks in one rack unit.

The Juniper EX4400-24X is a 24-port 10G SFP+ switch from the Juniper EX4400 line, with 2 x 100GbE QSFP28 uplinks plus an extension module slot. Running Junos OS, it is built for campus aggregation, small cores and fiber-to-the-floor designs. It supports Virtual Chassis stacking, up to 10 switches.

What the EX4400-24X Fixes in Branch and Campus Networks

As more devices connect at the network edge, access switches are expected to deliver power, segmentation and visibility, not only connectivity. Entry-level switches often lack consistent software, centralized management and the uplink capacity needed when dozens of access points and cameras share one closet.

The EX4400-24X runs Junos OS, the same operating system used across Juniper routers and switches, so configuration templates, automation scripts and troubleshooting skills carry over from branch to core. It supports Layer 2 and Layer 3 features including VLANs, 802.1X, QoS, static routing and RIP, with OSPF and advanced features enabled through Juniper licenses.

Its 2 x 100GbE QSFP28 uplinks plus an extension module slot and Virtual Chassis support (up to 10 switches) keep the closet simple to scale: add switches to the same Virtual Chassis and manage them as one device, either from the CLI or from Juniper Mist cloud with AI-driven insights.

Dense 10G Aggregation with 100G Uplinks

Twenty-four SFP+ ports accept 1G or 10G optics and DAC cables, so the EX4400-24X can aggregate access switches or connect servers directly. Two 100GbE QSFP28 ports link to the core, and an extension slot adds more uplinks when needed.

Built for Uptime in the Wiring Closet

The EX4400-24X uses dual hot-swappable power supplies (1+1) and hot-swappable fan modules, so a failed component can be replaced without taking the switch offline. Graceful Routing Engine switchover and nonstop bridging keep Virtual Chassis stacks stable during failures.

How to Set Up the Juniper EX4400-24X

1. Rack-mount the switch (or place compact models on a desk or wall), connect power, and keep the airflow path clear.
2. Connect the uplink ports to your aggregation or core switch using SFP+/QSFP optics or DAC cables, then patch access devices to the RJ-45 ports.
3. Run the Junos initial setup through the console port, J-Web or EZsetup, or claim the switch in Juniper Mist for zero-touch provisioning.
4. Configure VLANs, 802.1X, QoS and Virtual Chassis, upgrade to the recommended Junos release, and commit the configuration.