Juniper EX4100 Series Switches (Used & Refurbished)
The Juniper EX4100 Series brings AI-driven, cloud-managed campus access switching to the price point of traditional 1GbE access platforms. With PoE++ at 90W per port on multigigabit models, EVPN-VXLAN to the access layer, MACsec AES-256 encryption, and tight integration with Juniper Mist, EX4100 delivers next-generation operations on a cost-rational hardware tier. BrightStar Systems supplies fully tested, used and refurbished EX4100 switches backed by our 1-Year In-House Warranty — giving you modern Mist-managed access at a fraction of new pricing.
EX4100 switches are designed as the direct successor to the EX2300 and EX3400 in campus access roles, while sharing the same Junos OS, Mist cloud management, and EVPN-VXLAN feature set as the higher-tier EX4400. For organizations that don't need the multigigabit-everywhere density of EX4400 but want Mist-native operations, PoE++ for Wi-Fi 6/6E, and a clean refresh path from legacy Juniper, the EX4100 is the right platform.
Juniper EX4100 Series Overview
The EX4100 family is purpose-built for cloud-managed, AI-driven enterprise campus and branch networks. Every model in the line shares the same Mist-cloud onboarding, Marvis AI Assistant troubleshooting, EVPN-VXLAN fabric extension, and 25GbE SFP28 stacking interconnect. The differences across the line are at the access-port layer — port count, port speed, and PoE capability — letting you select the model that fits the device population in each wiring closet.
Key features of the EX4100 Series include:
- 1GbE and multigigabit access ports (up to 10GBASE-T on the 24MP) depending on model.
- PoE+ and PoE++ options — including 90W per port on the multigigabit MP models for high-draw Wi-Fi 6/6E APs and IoT.
- 4 x 1/10GbE SFP+ uplinks plus 4 x 10/25GbE SFP28 stacking/uplink ports on every model.
- 200 Gbps Virtual Chassis backplane — combine up to 10 EX4100 switches into a single logical device.
- EVPN-VXLAN to the access layer for campus fabric segmentation with group-based policies.
- MACsec AES-256 line-rate encryption on supported ports.
- Native integration with Juniper Mist Wired Assurance and Marvis AI Assistant for cloud-based operations.
- Compact 1RU form factor and AFO/AFI airflow options for standard and hot-aisle wiring closets.
Many customers deploy EX4100 as the direct upgrade from Juniper EX2300 or EX3400 access switches while pairing it with Juniper QFX Series switches in the data center and MX Series routers at the WAN edge.
Explore More Juniper Switches
EX4100 sits at the entry tier of Juniper's modern Mist-managed access portfolio. BrightStar Systems can help you design end-to-end Juniper networks that combine the right mix of EX access, QFX leaf–spine, and MX routing platforms.
Comparing Juniper EX4100 to EX4400, EX3400, and Arista 7000 Series
When planning a campus refresh, organizations weigh EX4100 against legacy Juniper EX models, the newer EX4400 line, and Arista 7000-series leaf switches. BrightStar Systems supplies all of these platforms and can walk through the trade-offs.
- Juniper EX4400 – Same Mist + EVPN-VXLAN stack as EX4100 at higher port density and per-port speeds. Pick EX4400 when you need 5GbE multigigabit access on every port; pick EX4100 when 2.5GbE access is sufficient and per-port cost matters.
- Juniper EX3400 – Previous-generation 1GbE Virtual Chassis access. EX4100 is the direct successor with Mist + EVPN-VXLAN added.
- Arista 7000 Series Switches – Full Arista portfolio for mixed-vendor designs.
Our engineers can walk through Junos OS and Mist versus Arista EOS and CloudVision, discuss optics compatibility, and help you decide whether to standardize on EX4100, EX4400, or a mixed-vendor architecture.
Popular Juniper EX4100 Models
Below are the four EX4100 models BrightStar Systems supplies for campus and branch networks. All units are fully tested and backed by our in-house warranty.
- EX4100-48MP – 48-port multigigabit PoE++ switch with 16 x 100M/1/2.5GbE + 32 x 10M/100M/1GbE access ports, 1620W PoE budget, 90W per port. Built for dense Wi-Fi 6/6E and smart-building IoT.
- EX4100-24MP – 24-port multigigabit PoE++ with native 10GBASE-T on 8 access ports. The only EX4100 model with copper 10GbE — ideal for branch IDFs, edit suites, and engineering workstations.
- EX4100-48T – 48-port 1GbE non-PoE access switch. 150W PSU (vs 920W on PoE models). The lowest-cost, lowest-thermal EX4100 — desktop refresh and server-room TOR for non-powered devices.
- EX4100-48P – 48-port 1GbE PoE+ at 30W per port, 1440W PoE budget. The proven workhorse for IP phones, Wi-Fi 5/6 APs, and standard IP cameras.
Inventory changes over time. To confirm which EX4100 models are currently in stock and to check pricing, request a Juniper EX4100 quote or call 916-248-4688 to speak directly with our team.
Juniper EX4100 Technical Specs & Architecture
The EX4100 platform is sized for modern campus access that needs more than basic Layer 2 switching. EVPN-VXLAN support, advanced policy, and cloud-based management make EX4100 a foundation for both traditional and fabric-based campus designs.
- Access ports: 1GbE, 2.5GbE multigigabit, and 10GBASE-T options depending on model (T, P, MP variants).
- Uplinks: 4 x 1/10GbE SFP+ uplinks plus 4 x 10/25GbE SFP28 stacking/uplink ports on every SKU.
- Switching capacity: 188 Gbps unidirectional on the 48-port models, 236 Gbps on the 24MP (sized for 10GbE access).
- Virtual Chassis: 200 Gbps backplane interconnect supporting up to 10 mixed-SKU EX4100 switches managed as one logical device.
- PoE capability: PoE+ (30W) on the 48P, PoE++ (90W) on the 24MP and 48MP, none on the 48T.
- EVPN-VXLAN support: Extends campus fabric segmentation to the access layer with consistent group-based policies.
- Advanced Layer 2/Layer 3: Full Junos OS feature set including VLANs, LAGs, OSPF, BGP, VRRP, and IPv6.
- Management and telemetry: Native Mist Wired Assurance integration with Marvis AI Assistant for cloud operations, telemetry, and automated troubleshooting.
EX4100 is well suited to environments that want a single hardware platform for traditional access switching today and EVPN-VXLAN campus fabrics tomorrow — at a lower per-port cost than EX4400.
EX4100 Model Details
EX4100-48T
- 48 x 10/100/1000BASE-T non-PoE access ports.
- 150W AC AFO power supply — one-sixth the draw of the PoE-equipped 48P. Lower closet heat load and lower acquisition cost.
- Good fit for desktop refresh closets, server-room TOR for non-PoE devices, and cost-optimized branch sites.
- Same switching engine as the 48P (188 Gbps / 279 Mpps) — you give up PoE, not switching capacity.
EX4100-48P
- 48 x 10/100/1000BASE-T PoE+ access ports delivering up to 30W per port.
- 1440W total PoE budget on dual PSUs.
- Ideal for IP phones, Wi-Fi 5/6 APs, IP cameras, and standard PoE+ campus endpoints.
- Drop-in successor to EX2300-48P and EX3400-48P with the EX4100 Mist + EVPN-VXLAN stack added.
EX4100-24MP
- 8 x 100M/1/2.5/5/10GbE + 16 x 10M/100M/1GbE PoE++ access ports.
- 1440W PoE budget with 90W per port (IEEE 802.3bt Type 4).
- The only EX4100 model with native 10GBASE-T over copper on access ports — for high-bandwidth wired endpoints.
- Strong fit for branch IDFs, broadcast and edit rooms, lab spaces, and engineering workstations.
EX4100-48MP
- 16 x 100M/1/2.5GbE + 32 x 10M/100M/1GbE PoE++ access ports.
- 1620W PoE budget on dual PSUs — highest in the EX4100 line. 90W per port for high-draw devices.
- Built for dense Wi-Fi 6/6E access closets and smart-building IoT backplanes.
- 48 ports of PoE++ in 1U makes this the right answer when AP density and IoT power needs are both high.
Compatible Optics, Uplinks & Accessories
EX4100 switches support a range of Juniper optics and DAC/AOC cables for uplinks and stacking. BrightStar Systems can bundle optics and accessories so switches arrive ready for deployment.
- Juniper SFP/SFP+/SFP28 Transceivers & Cables for 1/10/25GbE connectivity.
- DAC and AOC cables for short-reach 25GbE Virtual Chassis stacking and short-reach uplinks.
- 150W AC AFO/AFI and 920W AC AFO power supplies depending on model and rack airflow direction.
- Spare chassis (-CHAS variants) for warm-spare and lab-stocking strategies.
We can also advise on optics interoperability between EX4100, QFX data center switches such as QFX5120, and mixed-vendor environments.
Common Juniper EX4100 Use Cases
- Mist-managed campus access: EX4100-48P and 48MP feed wireless APs, IP phones, and cameras across multi-floor campuses managed centrally through Juniper Mist.
- Wi-Fi 6/6E aggregation: EX4100-48MP's 1620W PoE++ budget and 16 multigigabit ports support dense Wi-Fi 6/6E AP deployments without per-AP bandwidth throttling.
- Branch and remote IDFs: EX4100-24MP serves as the single switch in branch closets, combining 10GBASE-T copper for high-bandwidth wired endpoints with PoE++ for APs and cameras.
- Desktop and server-room access: EX4100-48T provides 1GbE non-PoE access at the lowest TCO — desktop refresh, server NIC aggregation, and wired-only conference rooms.
- EX2300 / EX3400 refresh: EX4100 is the direct successor with same port profiles, similar PoE budgets, and the modern EX4100 software stack (Mist, Marvis, EVPN-VXLAN, MACsec).
- EVPN-VXLAN campus fabrics: EX4100 extends EVPN to the access layer with consistent group-based policies, pairing with QFX leaf–spine cores.
Why Buy Used or Refurbished EX4100 Switches?
EX4100 brings Mist-managed access to entry-level campus pricing — and used or refurbished EX4100 hardware extends that cost advantage further. Buying refurbished EX4100 from BrightStar Systems closes the gap between new-hardware capability and budget reality.
- Significant cost savings: Reduce capital costs versus new EX4100 pricing while still standardizing on current-generation, Mist-managed platforms.
- Shorter lead times: Used and refurbished inventory often ships faster than new hardware with extended lead times from Juniper.
- Backwards compatibility: EX4100 coexists with EX2300, EX3400, and EX4400 in mixed Virtual Chassis stacks during phased refreshes.
- Proven reliability: All hardware is lab-tested and reset before shipment.
- Warranty coverage: Every EX4100 from BrightStar Systems includes our 1-Year In-House Warranty.
How We Test Refurbished EX4100 Switches
Our lab process is designed to make used EX4100 switches safe for deployment in production campus networks.
- Initial inspection and power-on testing with known-good optics and cables.
- Access port and uplink verification, including PoE testing on P and MP models (PoE+/PoE++ delivery on all powered ports).
- Virtual Chassis stacking verification on the SFP28 ports where applicable.
- Verification of management access and Junos OS telemetry functions.
- Loading a compatible Junos OS release and resetting configuration to factory defaults.
- Cleaning chassis and ports and labeling units for straightforward installation.
Each EX4100 is documented in our internal systems so we can rapidly trace test results and support any warranty-related questions.
EX4100 Lifecycle, Support & Replacement Planning
EX4100 is the current-generation Juniper entry-level campus access platform. It is the direct refresh target for organizations migrating off EX2300 or EX3400 into a Mist-managed architecture.
- Lifecycle stage: Current, actively supported Juniper campus access family.
- Software releases: Junos OS trains supporting EX4100 include Mist integration, EVPN-VXLAN, and MACsec.
- Upgrade paths: EX4100 works alongside EX4400 in higher-density closets and pairs with QFX in the data center.
- Mixed deployments: EX4100 is often deployed alongside EX2300 and EX3400 during phased multi-year refreshes.
EX4100 Buy-Back & Trade-In Options
If you are refreshing older Juniper access platforms, consolidating sites, or migrating to new architectures, BrightStar Systems can help you recover value from surplus hardware.
- Buyback offers for EX4100, EX2300, EX3400, and other Juniper EX models.
- Support for larger campus and data center decommissioning projects.
- Ability to apply recovered value toward replacement EX4100, EX4400, QFX, or Arista 7000-series hardware.
EX4100 Expertise from Juniper-Focused Network Engineers
BrightStar Systems is an engineering-focused Juniper reseller, not just a broker.
- Hands-on experience deploying EX4100 in campus access, branch IDFs, and EVPN-VXLAN designs.
- Guidance on EX4100 placement within mixed EX/QFX/MX architectures.
- Assistance matching EX4100 models, optics, and PoE budgets to your installed device population.
- Migration planning from EX2300, EX3400, and other legacy Juniper access platforms.
If you are planning a new campus design or a phased refresh from EX2300 / EX3400 to EX4100, our team can walk through topology, licensing, and hardware options before you purchase.
FAQ – Juniper EX4100 Series
Q: How is the EX4100 different from the EX4400?
A: Both share the same Mist cloud management, EVPN-VXLAN, MACsec, and 25GbE stacking. The differences are at the access layer: EX4400 offers higher per-port speeds (up to 5GbE multigigabit on every access port on the MP models) and higher port density variants, while EX4100 tops out at 2.5GbE on the 48MP and offers 10GBASE-T only on the 24MP. EX4100 is the cost-rational choice when 2.5GbE access is sufficient; EX4400 is the right pick when you need 5GbE on every port.
Q: Is the EX4100 a direct replacement for EX2300 or EX3400?
A: Yes. EX4100 is positioned as the direct successor to EX2300 and EX3400 for organizations refreshing into a Mist-managed architecture. Port profiles, PoE budgets, and form factors map cleanly, and Virtual Chassis stacking lets you mix EX4100 with existing EX2300/EX3400 during phased rollouts.
Q: Are your EX4100 switches used or refurbished, and do they include a warranty?
A: BrightStar Systems specializes in used and refurbished Juniper hardware. All EX4100 switches are tested in-house, cleaned, reset to factory defaults, and backed by our 1-Year In-House Warranty.
Q: Which EX4100 model is best for dense Wi-Fi 6/6E deployments?
A: The EX4100-48MP — 48 PoE++ ports delivering up to 90W each, 1620W total PoE budget, and 16 multigigabit access ports for 2.5GbE AP uplinks. It is the only EX4100 model sized for full-closet Wi-Fi 6/6E density.
Q: Does the EX4100 support EVPN-VXLAN to the access layer?
A: Yes. EX4100 supports EVPN-VXLAN with group-based policies (GBP) for consistent campus fabric segmentation extended end-to-end. This makes EX4100 a natural fit for modern fabric-based campus designs paired with Juniper QFX leaf–spine cores.
Q: Do you buy used EX4100 hardware?
A: Yes. BrightStar Systems actively buys used EX4100 switches and related Juniper hardware through our Juniper buyback program. If you are decommissioning EX4100 or upgrading to other platforms, we can provide bids and handle logistics.
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