Aruba CX 6300 vs Juniper EX4400: Choosing Between HPE's Two Campus Access Switches
With Juniper now part of HPE, campus buyers face an unusual question: two excellent stackable access switches, both sold by the same vendor. The Aruba CX 6300 runs the database-driven AOS-CX and is managed from Aruba Central, while the Juniper EX4400 runs Junos and is managed from the AI-native Mist cloud with Marvis. This guide compares the two on hardware, stacking, PoE, AIOps, and which fits your campus access layer post-acquisition.
The short answer
Both are first-rate Gigabit and multigigabit access switches, and because both are now HPE-owned, the choice is mostly about which management and automation philosophy you want to standardize on. Pick the Aruba CX 6300 if your shop already runs Aruba Central, ClearPass, and AOS-CX, or you value a single OS spanning access to data center with a limited lifetime warranty. Pick the Juniper EX4400 if you want Mist AI with Marvis for AIOps-driven troubleshooting, native EVPN-VXLAN to the access edge, and a Junos-consistent operating model. For greenfield campuses leaning into AI-driven operations, the EX4400 with Mist is the momentum platform; for Aruba-centric estates, the CX 6300 is the lower-friction choice.
Aruba CX 6300 vs Juniper EX4400, head to head
Specifications side by side
- Operating system
- AOS-CX (database-driven, fully programmable)
- Junos OS (modular, EVPN-VXLAN capable)
- Cloud management
- HPE Aruba Networking Central
- Juniper Mist with Marvis AI
- Port options
- 24/48-port 1GbE or Smart Rate multigig (1/2.5/5/10G)
- 24/48-port 1GbE or multigig (100M/1/2.5/5/10G)
- Uplinks
- Built-in SFP56 / 25G / 50G high-speed uplinks
- Modular 4x10G SFP+, 4x25G SFP28, or 1x100G QSFP28
- Stacking
- VSF up to 10 switches, up to 400 Gbps stacking BW
- Virtual Chassis up to 10 switches via 2x 100GbE VCPs
- Switching capacity
- 880-1760 Gbps (model dependent)
- Line-rate L2/L3 across 1/10/25/100G ports
- PoE
- Class 4 (30W), Class 6 (60W), Class 8 (90W); up to 2880W budget
- Up to 90W per port (802.3bt); up to ~3600W budget on 48XP
- Layer 3
- Full L3: OSPF, BGP, VRF, VXLAN
- Full L3: OSPF, BGP, EVPN-VXLAN, MPLS-capable
- Segmentation / NAC
- Dynamic Segmentation with ClearPass / Central NAC
- 802.1X, MACsec, Mist + 3rd-party NAC
- Form factor
- 1U fixed (6300F) and modular (6300M) variants
- 1U fixed; multigig (MP), PoE (P/XP), and non-PoE (T) variants
- Warranty
- Limited Lifetime Warranty
- Limited lifetime hardware warranty
- HPE portfolio fit
- HPE Aruba Networking (acquired 2015)
- HPE Juniper Networking (acquired 2025)
Where Aruba CX 6300 wins
- Single AOS-CX operating model spans access, aggregation, and data center
- Tight integration with Aruba Central, ClearPass NAC, and Dynamic Segmentation
- Limited Lifetime Warranty reduces long-term TCO on the access layer
- Smart Rate multigig and Class 8 (90W) PoE for Wi-Fi 6E/7 APs and IoT
- Built-in high-speed SFP56/25G/50G uplinks with no module to buy
Where Juniper EX4400 wins
- Mist AI with Marvis delivers conversational, self-driving troubleshooting
- Native EVPN-VXLAN extends fabric automation to the campus access edge
- Two dedicated 100GbE ports give high-bandwidth Virtual Chassis or uplinks
- Junos consistency from EX access up through QFX and MX
- Strong AIOps telemetry and proactive anomaly detection out of the box
Which one should you buy?
Campus already standardized on Aruba Central, ClearPass, and Aruba APs
Pick Aruba CX 6300. Adding CX 6300 keeps one OS, one NAC, and one dashboard, minimizing operational change and licensing sprawl.
Greenfield campus prioritizing AI-driven operations and fewer tickets
Pick Juniper EX4400. Mist with Marvis automates root-cause analysis and remediation, cutting mean-time-to-resolution for lean IT teams.
Organization extending an EVPN-VXLAN fabric to the access edge
Pick Juniper EX4400. The EX4400 supports EVPN-VXLAN natively, so the same fabric model runs from access to spine on Junos.
Branch and large enterprise needing 90W PoE for Wi-Fi 7 and IoT
Pick Aruba CX 6300. Smart Rate multigig plus Class 8 PoE and built-in 25G/50G uplinks power dense AP and IoT deployments without add-on modules.
Federal or SLED buyer needing TAA-compliant, contract-vehicle sourcing
Pick Aruba CX 6300. Both qualify, but Aruba's longer HPE tenure and lifetime warranty often simplify standardization; we can source either on GSA or SAP/FAR channels.
Frequently asked
Are both the Aruba CX 6300 and Juniper EX4400 HPE products now?
Yes. Aruba joined HPE in 2015 and the CX 6300 is sold as HPE Aruba Networking. HPE completed its acquisition of Juniper Networks in 2025, so the EX4400 is now HPE Juniper Networking. Both sit in the broader HPE networking portfolio, which is why buyers increasingly compare them head to head.
What is the main difference between AOS-CX and Junos on these switches?
AOS-CX is a modern, database-driven OS with a time-series state database and strong automation, managed primarily through Aruba Central. Junos is a mature, modular OS with native EVPN-VXLAN and is managed through the Mist cloud with Marvis AI. The practical difference is which automation and assurance ecosystem you standardize on.
How does VSF stacking compare to Virtual Chassis?
Both let you manage up to 10 switches as a single logical unit. Aruba VSF uses high-performance front-plane stacking with up to 400 Gbps of stacking bandwidth, while Juniper Virtual Chassis uses two dedicated 100GbE ports as Virtual Chassis ports that can be repurposed as uplinks. For most campus access deployments they are functionally comparable.
Which switch is better for AIOps and reducing support tickets?
The Juniper EX4400 with Mist and Marvis is generally the stronger AIOps platform, offering conversational troubleshooting and self-driving remediation. Aruba Central provides solid AI Insights and assurance, but Mist's AI-native design is the differentiator for teams optimizing mean-time-to-resolution.
Do both support 90W (Class 8) PoE for Wi-Fi 7 access points?
Yes. The Aruba CX 6300 offers Class 4/6/8 PoE up to 90W per port, and the Juniper EX4400 multigig and PoE models deliver up to 90W (802.3bt) per port. Both can power dense Wi-Fi 6E/7 AP and PoE IoT deployments; check the specific model's total power budget against your AP count.
Can I mix Aruba CX 6300 and Juniper EX4400 in the same campus?
You can, since both interoperate over standard Ethernet, L3 routing, and 802.1X. However, you cannot stack them together (VSF and Virtual Chassis are vendor-specific), and you would run two management planes. Most buyers standardize on one platform per site to keep operations and licensing simple.
Are these switches TAA-compliant and available on federal contract vehicles?
Both lines have TAA-compliant SKUs suitable for US federal, SLED, and healthcare procurement. As an authorized HPE, HPE Aruba Networking, and HPE Juniper Networking reseller, we can source either platform on GPC, SAP, FAR, and other contract vehicles with the appropriate compliance documentation.
Which has the better warranty and long-term value?
The Aruba CX 6300 carries a Limited Lifetime Warranty, which can lower total cost of ownership on the access layer. The Juniper EX4400 includes limited lifetime hardware coverage as well. Factor in Mist subscription costs for the EX4400 and Central licensing for the CX 6300 when comparing full lifecycle value.
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