Aruba CX 8400 Switch Series

A highly available, modular switching solution that is ideal for the most demanding campus core and data center networks.

Modular, intelligent, and highly resilient

The Aruba CX 8400 provides the ultimate in modular design and flexibility to address the emerging application, security, and scalability demands of the mobile, cloud, and IoT enterprise.

Simplify your IT operations with AOS-CX

Simplify your IT operations with AOS-CX

The Aruba CX 8400 Switch Series is based on AOS-CX, a modern, database-driven operating system that automates and simplifies many critical and complex network tasks. Delivering complete network configuration and assurance, Aruba OS-CX key innovations are its microservices-style modular architecture, REST APIs, Python-scripting capabilities, and the Aruba Network Analytics Engine.

Accelerate IT provisioning

Accelerate IT provisioning

Aruba Fabric Composer, a smart, software-defined orchestration solution, simplifies operations, increases network speed, and enhances overall infrastructure provisioning.

Unparalleled visibility and analytics

Unparalleled visibility and analytics

Get real-time monitoring and troubleshooting with Aruba Network Analytics Engine (NAE). Embedded in every Aruba CX switch, NAE provides the necessary compute and storage to analyze any event that could impact network health. Offering intelligent pre-processing of data, it can turn raw telemetry into actionable insights.

No downtime, even during upgrades

No downtime, even during upgrades

Aruba Virtual Switching Extension (VSX) takes a new and innovative approach to solving high availability challenges by combining the best aspects of existing HA technologies, such as multi-chassis link aggregation (MC-LAG) and equal-cost, multi-path (ECMP) routing. Providing a distributed and redundant architecture, it’s highly available, with minimal-to-zero traffic loss, even during software upgrades.

Fully resilient design

A flexible and innovative approach for security and scalability demands, the CX 8400 includes redundant fabric, management, power, and fans to create a resilient, highly available network.

High-speed, fully distributed architecture

High-performance 19.2Tbps switching (1.2Tbps/slot) capacity with up to 7.142Bpps for throughput.

Future proof your Enterprise network infrastructure

Advanced Layer 2/3 feature set includes BGP, EVPN, OSPF, VRF, and IPv6. Switching and routing is performed in the I/O modules, meeting the demands of bandwidth-intensive applications today and in the future.

Industry-leading line rate performance

Provides carrier-class high availability with industry-leading line rate performance. 10GbE/25GbE/40GbE/100GbE connectivity in a compact 8-slot chassis.

Deep segmentation across data center and campus networks

Dynamic VXLAN with BGP-EVPN for deep segmentation across data center and campus networks to help simplify network operations.

Details and specifications for the Aruba CX 8400 Switch Series

Carrier class

Connectivity in a compact 8 slot chassis, 10GbE/25GbE/40GbE/100GbE


19.2 Tbps switching capacity, up to 7 BPPS throughput

I/O flexibility

Offering 32P 10 GbE with MACsec, 8P 40 GbE,  6P 40/100 GbE, 32P 25GbE


Redundant fabric, management, power and fans ensuring resiliency


AOS-CX programmability using built-in REST APIs and Python

Details and specifications for the Aruba CX 8400 Switch Series
  • Performance
    • High-speed fully distributed architecture
      • Provides up to 19.2Tbps switching capacity with up to
        7.142Bpps for throughput; all switching and routing is performed in the I/O modules; meets the demands of bandwidth-intensive applications today and in the future
    Physical interfaces
    • Supports a maximum of 256 10GbE (SFP/SFP+) or 25GbE (SFP28) ports, or 64 40GbE (QSFP+) ports, or 48 ports 40/100GbE (QSFP28) combination
    • Aruba 8400X 32-port 10GbE SFP/SFP+ with MACsec Advanced Module (JL363A)
    • Aruba 8400X 8-port 40GbE QSFP+ Advanced Module (JL365A)
    • Aruba 8400X 6-port 40GbE/100GbE QSFP28 Advanced Module (JL366A)
    • Aruba 8400X-32Y 32-port 1/10/25G SFP/SFP+/SFP28 Module (JL687A)
    • Aruba 8400X 7.2Tbps Fabric Module (JL367A)
    • Aruba 8400 Management Module (JL368A)
    • Aruba X731 Fan Tray (JL369A)
    • Aruba 8400 Fan for X731 Fan Tray (JL370A)
    • Aruba 8400 1 Fan Tray and 6 Fans Bundle (JL371A)
    Power supply
    • Aruba X382 54VDC 2700W AC Power Supply (JL372A)
    Mounting kit
    • Aruba X464 4-post Rack Rail Kit (JL373A)
    • Aruba X462 2-post Rack Rail Kit (JL374A)
    Physical characteristics
    • Dimensions: 17.4(w) x 26(d) x 13.8(h) in. (44.1 x 66.0 x 35.1 cm) (8U height)
    • Weight
      • Empty configuration weight: 76 lbs (34 kg)
      • JL376A weight: 164 lbs (74 kg)
      • Full configuration weight: 241 lbs (109 kg)
    Mounting and enclosure
    • Mounts in an EIA standard 19-inch rack or other equipment cabinet (hardware included); horizontal surface mounting only
    • Operating: 32°F to 104°F (-0°C to 40°C) with 5% to 95%, non-condensing
    • Non-Operating: -40°F to 158°F (-40°C to 70°C) with 5% to 95%, non-condensing
    • Max Operating Altitude: Up to 10,000ft (3.048 Km)
    • Max Non-Operating Altitude: Up to 30,000ft (9.144 Km)
    • Acoustics
      • Sound Power (LWAd) 7.3 Bel
      • Sound Pressure (LpAm) (Bystander) 55.6 dB
  • Electrical characteristics
    • Frequency: 47-63 Hz
    • AC voltage: 90 – 140/180 – 264 VAC
    • DC voltage
    • Current: 16 A
    • Power output: 2750 W
    • EN 60950-1:2006 +A11:2009 +A1:2010 +A12:2011 +A2:2013
    • EN62368-1:2014
    • IEC 60950-1:2005 Ed.2; Am 1:2009+A2:2013
    • IEC62368-1, Ed. 2
    • IEC60825:2007 (Applies to products with lasers)
    • UL60950-1, CSA 22.2 No 60950-1
    • UL62368-1 Ed. 2
    • VCCI Class A; EN 55022 Class A; CISPR 22 Class A; IEC/EN 61000-3-2;
    • IEC/EN 61000-3-3; ICES-003 Class A; AS/NZS CISPR 22 Class A; FCC
    • (CFR 47, Part 15) Class A; GB9254
    • EN55032:2012 Class A
    • CISPR32:2012 Class A
    • Generic: Directive 2014/35/EU
    • EN: EN 55024:2010+ A1:2001 + A2:2003; ETSI EN 300 386 V1.3.3
    • ESD: EN 61000-4-2
    • Radiated: EN 61000-4-3
    • EFT/Burst: EN 61000-4-4
    • Surge: EN 61000-4-5
    • Conducted: EN 61000-4-6
    • Power frequency magnetic field: IEC 61000-4-8
    • Voltage dips and interruptions: EN 61000-4-11
    • Harmonics: EN 61000-3-2, IEC 61000-3-2
    • Flicker: EN 61000-3-3, IEC 61000-3-3
    • Out-of-band management (serial RS-232C); SNMP Manager; Telnet; terminal interface (serial RS-232C); modem interface; IEEE 802.3 Ethernet MIB; Ethernet Interface MIB
    Additional Specifications
    • For additional specifications, please see the data sheet.
Gartner logo on a gradient background

HPE (Aruba) is again named a Leader in the 2022 Gartner® Magic Quadrant™ for Enterprise Wired and WLAN Infrastructure

For the 17th consecutive time, HPE (Aruba) has been named a Leader in the 2022 Gartner® Magic Quadrant™ for Enterprise Wired and Wireless LAN Infrastructure. Go with a Leader who can help you reduce costs, provide faster mean time to recovery, and improve IT efficiency with a network ready for anything.

Aruba in the news

Business Wire

Organizations around the world migrate to Aruba 8000 Series Core Switches citing benefits from advanced security, visibility, and simplified operations.

Aruba redefines Enterprise Core Switching for mobile, cloud, and IoT demands

The new Aruba 8400 Core Switch and ArubaOS-CX operating system bring intelligent Edge capabilities to the core with advanced visibility, network insights, automated network resolution, and industry-leading performance.

Aruba 8400 wins CRN Product of the Year Award

With billions of mobile and IoT devices connected to the network, enterprises need to rethink older models of building and managing networks. Learn why Aruba 8400 was awarded Product of the Year for its unique ability to address the needs of the modern world.

Aruba 8400 earns a University New Product Award

This fully programmable software system automates and simplifies many critical and complex network tasks while supporting always-on demands from users.

Aruba 8400 receives a CRN Tech Innovator Award

Honoring standout hardware, software, or services that have helped to move the IT industry forward, Aruba’s 8400 Campus Core and Aggregation Switch Series took top honors in the Networking Enterprise company category.

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