Juniper EX Series Switches
Juniper EX Series Switches (Used & Refurbished)
The Juniper EX Series is Juniper’s flagship campus and enterprise switching portfolio, delivering secure, high-performance connectivity from small branch offices to large multi-building campuses. At BrightStar Systems, we specialize in fully tested, used Juniper EX switches across the entire family — from entry-level EX2300 access switches and EX3400 enterprise switches to higher-performance EX4300 campus switches, next-generation EX4400 multigig switches, EX4650 aggregation switches, and modular EX9200 core switches.
If you want a single place to browse all refurbished Juniper EX switches we stock, start with our main Juniper EX Series switches category, then drill into specific sub-series and SKUs from there.
All EX platforms run Junos OS, providing consistent CLI, robust automation (NETCONF, REST, Ansible), strong QoS, and security features that align with modern campus designs. Many customers pair EX switches with Juniper QFX data center platforms; if you’re evaluating both, our detailed Juniper QFX vs EX Series comparison guide is a great starting point.
Modern Juniper EX Switching Portfolio
In today’s deployments, the Juniper EX Series lines up naturally into three tiers:
- Access: EX2300, EX3400, EX4300, EX4400
- Aggregation / Distribution: EX4400, EX4650
- Core: EX9200 / EX9250 modular switches
This structure makes it easy to build a standardized design using only EX hardware, or to combine Juniper EX campus switches with MX routers and QFX switches when you need more advanced routing or fabric capabilities.
Quick EX Model Comparison
| Model | Typical Role | Access Speeds | Uplinks | Best Use Case |
|---|---|---|---|---|
| EX2300 | Branch / small office access | 1GbE | 10GbE SFP+ | Cost-optimized 1G access and quiet wiring closets |
| EX3400 | Enterprise campus access | 1GbE | 40GbE QSFP+ | Mature 1G campus edge with Virtual Chassis |
| EX4300 | High-performance access / light aggregation | 1GbE (plus EX4300-MP multigig) | 40GbE QSFP+ | Mixed VC with QFX5100 and more advanced L3 |
| EX4400 | EVPN-ready access & distribution | 1GbE / 2.5GbE / 5GbE | 25GbE / 100GbE | Next-gen fabric-based campus, Wi-Fi 6/6E APs |
| EX4650 | Aggregation / collapsed core | 25GbE | 100GbE | EVPN aggregation and campus core roles |
| EX9200 / EX9250 | Large campus core / metro aggregation | 10/40/100GbE (per line card) | Modular 40G/100G | Chassis-based, highly redundant campus core |
If you’re designing a full campus refresh, you can combine this page with our Juniper EX Series module guide to map line cards, optics, and uplinks across EX access, distribution, and core tiers.
Example Campus Architectures Using EX Switches
Traditional Three-Tier Campus (EX-focused)
──────────────────────────────────────────
[ Access ]
EX2300 • EX3400 • EX4300
↓ 10G / 40G uplinks
[ Distribution ]
EX4300 • EX4400 • EX4650
↓ 40G / 100G
[ Core ]
EX9200 (or MX)
──────────────────────────────────────────
EVPN-VXLAN Campus Fabric
──────────────────────────────────────────
[ Access ]
EX4400 EVPN-ready access switches
↓ 25G uplinks
[ Aggregation ]
EX4650 25G/100G aggregation
↓ 100G or higher
[ Core ]
EX9200 or QFX/MX platforms
──────────────────────────────────────────
For many customers, the right answer is a phased deployment: keep stable EX3400 or EX4300 campus switches where they work well, and introduce EX4400 EVPN-capable switches and EX4650 aggregation switches as high-demand closets and buildings are upgraded.
EX2300 – Compact Access for Branch and Edge
The EX2300 is the entry point into the modern EX family and a great fit for smaller sites that still want Junos consistency and centralized management.
- 24- and 48-port 1GbE access models
- PoE/PoE+ options for APs, phones, and cameras
- 10GbE SFP+ uplinks to your distribution tier
- Fanless options for quiet branch deployments
- Virtual Chassis for simplified management across a stack
When you need to refresh aging EX2200 or EX3200 hardware, standardizing on used Juniper EX2300 switches gives you a stable, low-cost access layer that still fits neatly into larger EX and MX architectures.
EX3400 – Core Enterprise Access Workhorse
The EX3400 is one of the most common Juniper EX campus switches we see in production networks. It delivers reliable 1GbE access, 40GbE uplinks, and stacking that’s easy to operate at scale.
- 24- and 48-port 1GbE access
- PoE/PoE+ models for converged voice, video, and data
- 40GbE QSFP+ uplinks for distribution/core connectivity
- Virtual Chassis for up to 10 members
- Strong QoS and multicast support for collaboration-heavy environments
Many customers replace older EX3300 or EX4200 deployments with refurbished EX3400 switches to get more performance and a longer support runway without jumping all the way to an EVPN fabric design.
EX4300 – High-Performance Access and Mixed Virtual Chassis
The EX4300 family takes things further with higher-performance forwarding, more advanced Layer 3 capabilities, and unique mixed Virtual Chassis capabilities with the QFX5100 series.
- 24- and 48-port 1GbE access models
- EX4300-MP multigig variants for higher-speed APs
- High-power PoE+ for dense IP device environments
- 40GbE QSFP+ uplinks for aggregation or core roles
- Support for mixed EX4300/QFX5100 Virtual Chassis deployments
If you are upgrading from older EX3200, EX4200, or EX3300 platforms and need more routing headroom, used Juniper EX4300 switches are often the sweet spot — especially when paired with QFX5100 in mixed-VC campus cores or data center edges.
EX4400 – EVPN-Ready Campus Access with Multigig & MACsec
The EX4400 is Juniper’s next-generation campus access and distribution platform, purpose-built for fabric-based designs, Wi-Fi 6/6E, and more stringent security requirements.
- 1GbE and multigig (1/2.5/5GbE) access interfaces
- 25G and 100G uplinks for high-speed campus fabrics
- MACsec encryption for sensitive access and edge environments
- EVPN-VXLAN bridging and routing
- Deep integration with Juniper Mist AI for telemetry and automation
When customers are designing new buildings or modernizing wireless, they increasingly standardize on EX4400 multigig switches at the edge and EX4650 aggregation switches upstream to build an EVPN-ready campus fabric that will last for years.
EX4650 – 25G/100G Aggregation and Campus Core
The EX4650 brings data center-class switching capabilities into the campus aggregation and core tiers. It’s designed for environments that want to push EVPN, higher bandwidth, and richer routing into the distribution layer.
- High-density 25GbE SFP28 downlinks
- 100GbE QSFP28 uplinks for spine or core connectivity
- EVPN-VXLAN routing and large routing tables
- High buffer and queue capacity for east-west campus traffic
For EVPN-based designs, a common pattern is:
- EX4400 EVPN access switches at the edge
- EX4650 aggregation switches in the distribution/core role
- EX9200 core switches or MX routers for large campuses or metro extensions
EX9200 / EX9250 – Modular Core for Large Campus and Metro
For large enterprise or metro networks that need chassis-based redundancy and large-scale routing, the EX9200 and EX9250 families act as the backbone for many campus cores.
- Multiple chassis sizes (EX9204, EX9208, EX9214)
- Flexible line cards supporting 10GbE, 40GbE, and 100GbE
- Redundant routing engines and fabric modules
- Carrier-grade control plane and high availability
We frequently help customers pair used Juniper EX9200 core switches with EX4400 access switches and EX4650 aggregation switches to create long-lived campus architectures that scale cleanly.
Juniper EX vs QFX – Where Each Belongs
Many customers deploy both Juniper EX Series switches and Juniper QFX Series switches in the same environment. A simplified way to think about it:
| Feature | EX Series | QFX Series |
|---|---|---|
| Primary Use | Campus and branch access, wired edge, aggregation | Data center leaf/spine, high-performance fabrics |
| PoE / Multigig | Broad support (EX2300, EX3400, EX4300, EX4400) | Limited; optimized for server-facing ports |
| Typical Uplinks | 10/25/40/100GbE | 10/25/40/100/400GbE (model dependent) |
| Best For | Campus switching, access, and wired/Wi-Fi edge | High-bandwidth workloads, spine/leaf fabrics |
For a deeper breakdown, including platform examples like QFX5100, QFX5120, and QFX5130, read our dedicated Juniper QFX vs EX Series comparison.
EX Upgrade & Migration Paths
Most organizations don’t rip-and-replace their entire campus. Instead, they move through logical refresh steps within the Juniper EX Series family:
- EX2200 / EX3200 → EX2300 or EX3400: simple, budget-friendly 1GbE access upgrades.
- EX3300 / EX4200 → EX3400 or EX4300: modern 1GbE campus access with better stacking and routing.
- EX4300 → EX4400: multigig, MACsec, and EVPN-ready campus access.
- EX4600 → EX4650: higher-density 25G/100G aggregation and EVPN fabrics.
If you’re planning a phased migration, we can help you design around refurbished EX switches to keep capex in check while still aligning with modern campus best practices.
Why Buy Used Juniper EX Switches from BrightStar Systems?
We focus heavily on used Juniper hardware, including the full EX, QFX, MX, and SRX portfolios. For EX specifically, that means:
- Comprehensive testing: Every EX switch is powered up, port tested, and validated with appropriate optics where applicable.
- 1-Year In-House Warranty: Our warranty covers all used Juniper EX switches we sell.
- Deep EX inventory: EX2300, EX3400, EX4300, EX4400, EX4650, and EX9200 families are regularly in stock.
- Design assistance: We help align EX models with your existing QFX, MX, and optics strategy.
- Buyback programs: We purchase your surplus EX hardware so you can reinvest in newer platforms.
If you’re new to the secondary market, our guide to buying used network equipment explains the process, risk controls, and benefits in more depth.
FAQs About Juniper EX Series Switches
Is the EX3400 still a good option in 2025?
Yes. Juniper EX3400 switches remain an excellent choice for 1GbE campus access when you don’t need multigig or EVPN at the edge. They’re especially attractive as used Juniper EX switches when you want maximum value per port.
Should I move from EX4300 to EX4400?
If you’re rolling out Wi-Fi 6/6E, need multigig access, want MACsec at the edge, or are planning an EVPN campus fabric, upgrading to EX4400 multigig switches makes sense. If your current EX4300 campus deployment is stable and meeting requirements, you can introduce EX4400 in high-demand closets first and expand over time.
Which EX switches support EVPN-VXLAN?
Within the EX family, EX4400 and EX4650 are the primary platforms for EVPN-VXLAN in campus environments. They’re often combined with QFX or MX platforms in the core.
Can I stack EX switches?
Yes. EX2300, EX3400, EX4300, and EX4400 all support Virtual Chassis. The EX4300 can also participate in mixed VC with QFX5100, which is still common in many cores.
Do you buy used EX switches?
Yes. We actively buy back EX Series switches including EX2300, EX3400, EX4300, EX4400, EX4650, and EX9200 platforms. If you’re refreshing your campus, contact us with your inventory list for a quote.
Request a Quote for Used Juniper EX Series Switches
Whether you’re upgrading a single closet or refreshing an entire campus, our team can help you choose the right mix of used Juniper EX Series switches — including EX2300, EX3400, EX4300, EX4400, EX4650, and EX9200 — to meet your performance and budget requirements. We can also advise on compatibility with your existing Juniper QFX, MX, and SRX deployments.
Request a quote today, or browse all of our used Juniper network hardware to see how much you can save on your next campus refresh.