Juniper EX4400 vs Aruba CX 6300: Which Campus Access Switch Wins?
The Juniper EX4400 and Aruba CX 6300 are two of the strongest campus access switches money can buy, and after the HPE acquisition of Juniper Networks, both now live under one roof. That makes this less a battle between vendors and more a choice between two management philosophies: Junos with Mist AI versus AOS-CX with Aruba Central. This guide compares stacking, multigig PoE++, security, and management so you can match the right access switch to your campus.
The short answer
Both switches are excellent, current-generation Layer 3 access platforms, so the decision usually comes down to your existing management stack and operational model. Choose the Juniper EX4400 if you want Mist AI-driven assurance, native EVPN-VXLAN to the access edge, and Junos automation; choose the Aruba CX 6300 if you are standardized on Aruba Central, ClearPass, and the AOS-CX single-image NetEdit workflow. Because Uniqcli is an authorized reseller of both HPE Aruba Networking and HPE Juniper Networking, we can quote either line side by side and help you pick on architecture rather than brand. For greenfield AIOps-first campuses we lean EX4400 with Mist; for shops already running Aruba wireless and ClearPass, the CX 6300 is the cleaner fit.
Juniper EX4400 vs Aruba CX 6300, head to head
Specifications side by side
- Role
- Campus / branch access switch
- Campus / branch access switch
- Operating system
- Junos OS / Junos OS Evolved
- AOS-CX
- Layer
- Layer 2 and Layer 3
- Layer 2 and Layer 3
- Multigig downlinks
- 24/48-port 100M/1/2.5/5/10GbE on MP models
- 24-port 1/2.5/5/10GbE or 48-port 1/2.5/5GbE Smart Rate
- PoE
- 802.3bt up to 90W per port; up to ~2200W budget (48MP, dual PSU)
- 802.3bt Class 6 (60W) to Class 8 (90W)
- Uplinks
- Dual 100GbE (channelizable to 4x10/25GbE)
- 4x SFP56 at 10/25/50/100GbE
- Stacking
- Virtual Chassis up to 10 units over 100GbE
- VSF up to 10 units front-plane, 50G DAC capable
- Switching capacity (representative)
- Line-rate per model; up to several Tbps in a Virtual Chassis
- Up to 880 Gbps / 660 Mpps per switch
- Cloud management
- Juniper Mist (Marvis AI)
- Aruba Central
- Fabric
- EVPN-VXLAN to the access edge
- EVPN-VXLAN supported on AOS-CX
- Security highlights
- MACsec, 802.1X, role-based access, hardened Junos
- MACsec, 802.1X, dynamic segmentation, ClearPass
- Warranty
- Standard warranty plus Juniper Care service tiers
- Limited lifetime warranty on select models
Where Juniper EX4400 wins
- Mist AI with Marvis delivers proactive, self-driving assurance and natural-language troubleshooting
- Native EVPN-VXLAN to the access edge for fabric-based campus designs
- Junos automation, ZTP, and a mature CLI prized by network engineers
- Dual 100GbE Virtual Chassis ports double as high-speed uplinks
- Strong fit for organizations standardizing on Juniper Mist wireless
Where Aruba CX 6300 wins
- Seamless integration with Aruba Central, ClearPass, and Aruba wireless
- Dynamic segmentation lets one policy follow users and IoT across the campus
- Fully programmable AOS-CX with REST API and the NetEdit config workflow
- Limited lifetime warranty lowers total lifecycle cost
- SFP56 uplinks add native 50GbE flexibility for stacking and aggregation
Which one should you buy?
Greenfield campus that wants AI-driven operations from day one
Pick Juniper EX4400. Mist AI and Marvis provide proactive assurance and faster root-cause analysis, ideal for lean IT teams modernizing wired and wireless together.
Existing Aruba wireless and ClearPass deployment
Pick Aruba CX 6300. The CX 6300 plugs straight into Aruba Central and dynamic segmentation, giving a single policy and management plane across the Aruba stack.
Building an EVPN-VXLAN campus fabric to the edge
Pick Juniper EX4400. EX4400 extends EVPN-VXLAN to the access layer with mature Junos fabric tooling for scalable, standards-based segmentation.
Healthcare or IoT-heavy site needing per-device segmentation
Pick Aruba CX 6300. Dynamic segmentation with ClearPass enforces granular roles for medical and OT devices without re-architecting VLANs.
High-density wiring closet needing 90W PoE for APs and cameras
Pick Juniper EX4400. The EX4400-48MP delivers up to 90W per port with a large PoE budget, comfortably powering Wi-Fi 6E/7 APs and PTZ cameras.
Frequently asked
What is the main difference between the Juniper EX4400 and Aruba CX 6300?
Both are current-generation Layer 3 campus access switches with multigig ports and 802.3bt PoE up to 90W. The biggest difference is the software and management stack: the EX4400 runs Junos with Juniper Mist and Marvis AI, while the CX 6300 runs AOS-CX with Aruba Central and dynamic segmentation. Hardware capabilities are broadly comparable.
Junos vs AOS-CX, which is easier to manage?
It depends on your team. Junos offers a mature, structured CLI with commit-based configuration and Mist cloud assurance for AIOps. AOS-CX is fully API-driven with the NetEdit workflow and a built-in analytics engine. Teams already fluent in one OS usually find that platform easier, so existing skills often decide the answer.
How do Virtual Chassis and VSF stacking compare?
Both support stacking up to 10 switches managed as one logical device. Juniper Virtual Chassis uses the dual 100GbE ports, which can be repurposed as uplinks when not stacking. Aruba VSF uses front-plane SFP56 ports and supports 50G DACs. Functionally they are similar; the difference is which uplink ports are consumed by the stack.
Do both switches support EVPN-VXLAN for campus fabric?
Yes. The EX4400 supports EVPN-VXLAN natively to the access edge, a strength of the Junos fabric model. AOS-CX on the CX 6300 also supports EVPN-VXLAN. If a standards-based fabric to the access layer is central to your design, both are viable, with Juniper having particularly deep fabric tooling.
Which switch is better for an existing Aruba wireless environment?
The Aruba CX 6300 is the more natural fit. It shares Aruba Central management with Aruba access points and integrates with ClearPass for dynamic segmentation, giving you one policy and one dashboard across wired and wireless. You can still pair the EX4400 with Aruba wireless, but you would manage two cloud platforms.
Are the EX4400 and CX 6300 available in TAA-compliant, GSA-purchasable configurations?
Yes. As an authorized HPE Aruba Networking and HPE Juniper Networking reseller, we can source TAA-compliant configurations of both the EX4400 and CX 6300 through federal vehicles including GPC, SAP, FAR, and GSA eBuy, with appropriate documentation for federal, SLED, and healthcare buyers.
Both are pitched against Cisco Catalyst 9300, so which should I pick?
The EX4400 and CX 6300 are both credible Catalyst 9300 alternatives that typically deliver better AIOps value and lower licensing friction. Between the two, pick based on management preference: Mist AI for self-driving operations, or Aruba Central plus dynamic segmentation for a unified Aruba stack. We can quote both against your current Cisco renewal.
Can Uniqcli help us standardize on one platform across multiple sites?
Yes. We can model a multi-site rollout on either the EX4400 or CX 6300, including stacking design, PoE budgeting, uplink sizing, and management licensing, and source the gear through commercial or federal channels. Because we carry both HPE Juniper and HPE Aruba lines, our recommendation is based on your architecture, not a single brand.
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