Aruba CX 6400 vs Aruba CX 6300: Modular Chassis or Stackable Access?

Both the Aruba CX 6400 and CX 6300 run the same AOS-CX operating system and share the management and automation model, but they live at different layers of the campus. The CX 6400 is a 5- or 10-slot modular chassis built for the core and distribution layer, while the CX 6300 is a 1U VSF-stackable switch built for the access layer. This guide breaks down where each one fits so you size the network correctly the first time.

Get a quote See the specs

The short answer

Choose the Aruba CX 6400 when you need an aggregation, distribution, or campus-core switch with high 40/100GbE density, redundant supervisor and power modules, and chassis-level resilience. Choose the Aruba CX 6300 for wiring-closet access where 90W Class 8 PoE, VSF stacking, and built-in SFP56 uplinks matter more than chassis modularity. In most campuses they are complementary rather than competitive: CX 6300 at the edge feeding into a CX 6400 core. Pick the 6400 only when a single 6300 stack can no longer aggregate your access tiers or deliver the high-speed fabric the core demands.

Aruba CX 6400 vs Aruba CX 6300, head to head

Aruba CX 6400

Aruba CX 6300

Role in the network

Core / distribution / aggregation

Access / wiring closet

Form factor

Modular 5-slot (6405) or 10-slot (6410) chassis

Fixed and modular 1U stackable switches

Scalability model

Add or swap line-card modules in chassis slots

VSF stack up to 10 switches as one logical unit

High-speed density

Very high 40/100GbE line-card density across slotsadvantage

Four built-in 10/25/50/100GbE uplinks per switch

PoE for endpoints

PoE via line cards (multigig + 60W classes)

Up to 90W Class 8 802.3bt on access portsadvantage

Redundancy

Redundant management modules, fabric, and poweradvantage

Dual hot-swap power on 6300M; stack resilience via VSF

Software / management

AOS-CX with NetEdit and Aruba Central

Cost and footprint per port

Higher entry cost; rack space for chassis

Lower entry cost; compact 1U per stack memberadvantage

Specifications side by side

Switch class: Modular chassis switch; Stackable fixed/modular access switch
Models: CX 6405 (5-slot), CX 6410 (10-slot); CX 6300F (fixed), CX 6300M (modular)
Operating system: AOS-CX; AOS-CX
Switching capacity: Up to ~28 Tbps system capacity; Up to ~200-400 Gbps stacking throughput per switch
Module / slot model: 5 or 10 slots; non-blocking fabric per slot; 4 built-in high-speed uplinks; modular PSU/fan on 6300M
Highest port speed: Up to 100GbE via line cards; Up to 100GbE on built-in uplinks (SFP56)
Access port options: Multigig, 60W PoE, SFP+ line cards; 24/48 ports 1GbE or HPE Smart Rate 1/2.5/5/10GbE
PoE: PoE delivered through PoE line cards; 802.3bt Class 4/6/8 up to 90W; 720W/1440W/2880W budgets
Stacking / virtualization: Single chassis; redundant management modules; VSF up to 10 switches as one logical device
Layer 3 routing: BGP, OSPF, VXLAN, EVPN, VRF; BGP, OSPF, VXLAN, EVPN, VRF
Security: AOS-CX role-based segmentation, MACsec on capable cards; MACsec-256, dynamic segmentation, role-based access
Power redundancy: Redundant hot-swap power supplies; Dual hot-swap PSUs on 6300M; single fixed on 6300F

Where Aruba CX 6400 wins

Modular 5- or 10-slot chassis scales line cards as the campus grows
Redundant management modules and power for core/distribution-grade resilience
High 40/100GbE density for aggregating many access switches
Massive system switching capacity for a campus core or large distribution layer
Same AOS-CX software and tooling as the rest of the CX family

Where Aruba CX 6300 wins

VSF stacks up to 10 switches into one logical unit for simple management
Up to 90W Class 8 802.3bt PoE for cameras, APs, and high-power endpoints
Built-in 10/25/50/100GbE SFP56 uplinks with no extra modules
Compact 1U footprint and lower entry cost per wiring closet
Fixed (6300F) and modular (6300M) options to match budget and redundancy needs

Which one should you buy?

Campus core or large distribution layer aggregating many switches

Pick Aruba CX 6400. The modular chassis provides the slot density, 40/100GbE line cards, and redundant management and power needed to aggregate a building or campus.

Wiring-closet access for users, APs, cameras, and IoT

Pick Aruba CX 6300. High-power 90W Class 8 PoE, multigig access ports, and VSF stacking make it the right edge switch feeding traffic up to the core.

Growing access tier that needs simple management at scale

Pick Aruba CX 6300. VSF lets you manage up to 10 stacked switches as a single logical device, simplifying operations without a chassis.

High-availability collapsed core for a mid-to-large building

Pick Aruba CX 6400. Redundant management modules, redundant power, and chassis fabric deliver the resilience a single point of aggregation requires.

Cost-sensitive single-closet deployment

Pick Aruba CX 6300. A 6300F or small VSF stack delivers L3 access at a far lower entry cost and footprint than a modular chassis.

Frequently asked

What is the main difference between the Aruba CX 6400 and CX 6300?

The CX 6400 is a modular 5- or 10-slot chassis switch built for the core, distribution, and aggregation layers, while the CX 6300 is a 1U VSF-stackable switch built for the access layer. They run the same AOS-CX software but serve different tiers of the campus.

Can the CX 6300 replace a CX 6400 in the core?

For smaller sites a CX 6300 VSF stack can act as a collapsed core or distribution layer. But once you need high 40/100GbE density, redundant management modules, and chassis-level fabric resilience, the CX 6400 is the right platform.

Do the CX 6400 and CX 6300 run the same operating system?

Yes. Both run AOS-CX, so they share the same CLI, REST API, Network Analytics Engine, NetEdit, and Aruba Central management experience, which simplifies operations when you deploy them together.

How much PoE does each switch deliver?

The CX 6300 supports 802.3bt PoE up to 90W (Class 8) on access ports with budget options up to 2880W. The CX 6400 delivers PoE through its PoE line cards, including multigig and 60W classes, with the exact budget depending on the modules and power supplies installed.

What stacking or chassis scaling does each support?

The CX 6300 uses Virtual Switching Framework (VSF) to combine up to 10 switches into one logical device. The CX 6400 scales by adding or swapping line-card modules in its 5 or 10 chassis slots rather than stacking.

Are these switches TAA-compliant and available on GSA or SAP/FAR channels?

As an authorized HPE and HPE Aruba Networking reseller, Uniqcli can source TAA-compliant Aruba CX 6400 and CX 6300 configurations and support procurement through GPC, SAP, FAR, and other public-sector contract vehicles. Contact us with your part numbers and we can confirm compliance and contract availability for your specific build.

Which switch is better for a campus that already uses Aruba Central?

Both integrate fully with Aruba Central, so either fits an existing Central deployment. The decision is about network role: CX 6300 for access, CX 6400 for the aggregation or core that those access switches feed into.

Can I mix CX 6400 and CX 6300 switches in one network?

Yes, and that is the most common design. CX 6300 switches sit at the access edge and uplink into a CX 6400 chassis at the distribution or core layer, all managed under one AOS-CX and Aruba Central framework. Uniqcli can help design and quote the full stack.

Related comparisons

Model vs model

Build your HPE bill of materials.

Send us the requirement, the project, or an existing quote to beat. We come back with a validated, TAA-compliant HPE configuration and a real price, often below list.

Get a quote Request an RFP / BOM review

connect [at] getuniqcli.com · Chicago, IL