The Juniper QFX5240-64OD delivers high-density 800G leaf-spine switching for AI and data centre fabrics. Built for enterprise, service provider and cloud environments, it helps keep accelerated compute clusters moving with Junos OS Evolved and advanced telemetry.
Dense east-west traffic, tighter latency expectations and growing fabric scale are putting more pressure on how modern infrastructure is built and operated.
The Juniper QFX5240-64OD is a high-density leaf-spine switch for production data centre fabrics, designed for environments that need 800GbE at scale. Its 64×800GbE OSFP port layout gives infrastructure teams the radix needed for large GPU pods and compact spine tiers.
It pairs that port density with Juniper Apstra Data Center Director support, helping teams define and operate fabric intent with less manual effort. Advanced telemetry, including ECN and PFC counters, gives operators clearer visibility into congestion and flow behaviour.
That combination supports more predictable oversubscription control, faster data movement between compute and storage, and a cleaner path to scaling dense clusters. It suits infrastructure that must keep high-value workloads moving without turning the network into a bottleneck.
Our team can help you assess the Juniper QFX5240-64OD for your fabric design and operational model.
Juniper QFX5240-64OD is a data centre switching platform for AI data centre and data centre deployments, designed to support high-density leaf-spine architectures with a clear fit for modern fabric scale.
High-Density Leaf-Spine Design
The platform is built for high-density 800G leaf-spine switching, aligning switch architecture with large-scale fabric deployment needs.
800G Front-Panel Capacity
It provides 64 x 800GbE OSFP ports to support dense connectivity within performance-driven data centre fabrics.
Fabric Aggregation Flexibility
A dedicated pair of 10GbE SFP+ ports supports auxiliary connectivity alongside the main switching fabric.
Data Centre Deployment Fit
Its architecture is positioned for AI data centre and data centre environments where compact, high-bandwidth switching is required.
Platform-Defined Switching Role
The system is purpose-built as a switching platform, giving network architects a consistent foundation for leaf-spine design decisions.
Deployment Consistency
The same platform profile applies across listed variants, including new and refurbished units, helping maintain deployment planning consistency.
Infrastructure Alignment
Its design supports data centre operational models that prioritise predictable fabric architecture and straightforward placement in the switching layer.
If you are planning an AI data centre fabric or expanding a high-density leaf-spine design, our team can help align Juniper QFX5240-64OD deployment choices with your switching requirements.
| Product Family | Juniper QFX |
|---|---|
| Product Series | QFX5200 |
| Deployment | Data Centre |
| Target Organisation Size | Service Provider |
| Primary Use Case | Spine |
| Product Tier | Flagship |
| Network Architecture | Layer 3 |
| Access Ports | 64 |
| Access Port Architecture | OSFP |
| Uplink Ports | None |
| Uplink Architecture | None |
| Total Ports | 64 |
| Maximum Port Speed | 800G |
| Port Configuration | 64×OSFP |
| PoE | No |
| Stacking | Supported |
| Operating System | |
| Power Redundancy | Hot-swappable PSUs |
| Maximum VLANs | 4096 |
| Routing Capability | Dynamic |
| Switching Capacity (Gbps) |
The Juniper QFX5240-64OD is a 64-port 800GbE fabric switch for very large AI and hyperscale environments that need dense east-west bandwidth, predictable latency, and scaling beyond 400GbE tiers. It fits infrastructure teams building high-throughput leaf and spine layers for accelerated clusters.
In enterprise and colo data centres, the QFX5240-64OD suits large GPU pods where compute demand quickly exposes fabric limits. Teams use it to keep east-west traffic moving at 800GbE speeds without adding another oversubscribed layer.
For software teams moving models, checkpoints, and test data between compute and storage, this switch helps remove network delay from development cycles. It fits lab-to-production fabrics where accelerated nodes need consistent throughput.
Finance teams running large simulations and AI analytics need tight control over latency and oversubscription. The QFX5240-64OD gives those clusters a high-capacity fabric tier that supports bigger datasets and heavier server-to-server traffic.
Media and entertainment deployments often push uncompressed assets, render jobs, and collaborative file access through the same fabric. This switch is a practical fit when older 400GbE spine capacity becomes a bottleneck for dense production clusters.
In telecoms and cloud operator environments, the QFX5240-64OD supports compute pods that need high-capacity Ethernet without relying on lower-speed aggregation. It helps service teams build AI-ready fabrics with fewer network constraints.
Our team can help design and deploy Juniper QFX5240-64OD fabrics for AI clusters, analytics environments, media pipelines, and service-provider infrastructure with the right scale and operational fit.
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Below you’ll find alternative models, suitable software and services that pair with this solution – helping you to avoid compatibility issues, reduce support overhead and deploy with confidence.
Not all deployments fit standard configurations. If you’re weighing up options or want a second opinion on your setup, our team is here to help with honest, straightforward advice backed by decades of vendor knowledge.
