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Arista DCS-7060DX5-64E-F — 32×800G QSFP-DD Spine Switch with Forward Airflow
The Arista DCS-7060DX5-64E-F is a 1RU, 32-port 800G spine switch built on the 7060X5 platform. Delivering 25.6 Tbps of non-blocking switching capacity with 825 ns cut-through latency and a 114 MB shared packet buffer, it is purpose-built for the spine layer of high-density 400G/800G leaf-spine fabrics and next-generation AI/ML cluster interconnect and storage networks. The DX5-64E delivers 2× the per-port bandwidth of the 7060DX4-32-F in the same 1RU form factor, with each port operating natively at 800G on QSFP-DD optics.The “-F” suffix denotes front-to-rear (forward) airflow, the standard configuration for traditional hot-aisle/cold-aisle data center designs where cool air is supplied from the front of the rack. The -64E designation reflects the maximum port configurations supported — up to 64 × 400GbE ports via breakout, or 128 × 200GbE, or higher port counts at lower speeds through breakout cable support.
Key Features at a Glance
32 × 800GbE QSFP-DD ports supporting 800G, 400G, 200G, and 100G speeds — up to 256 × 100G interfaces with 4×100G breakout
25.6 Tbps non-blocking switching capacity — full wire speed across all 32 ports simultaneously, or 51.2 Tbps in full-duplex mode
825 ns cut-through latency for consistent, low-jitter performance across all active ports
114 MB shared packet buffer — approximately 2× deeper than the 7060DX4-32-F (64 MB) for AI, storage, and bursty east-west workloads at 800G scale
Advanced switching architecture optimized for 800G QSFP-DD performance and full EOS feature support
Front-to-rear airflow (“-F”) for standard hot-aisle/cold-aisle data center deployments
Redundant, hot-swappable power supplies and hot-swappable fan trays
Full L2/L3 feature set: VXLAN, EVPN, MLAG, 128-way ECMP, BGP, and advanced routing
Dynamic Load Balancing and Cluster Load Balancing for AI/ML all-reduce and storage traffic patterns
Rich telemetry: LANZ, sFlow, AEM, and streaming telemetry
Runs Arista EOS® with open APIs, Python/Bash scripting, and CloudVision® integration
The DX5 Generation: 800G Native Performance and Next-Generation Spine Architecture
The 7060DX5-64E represents Arista’s next generation of ultra-high-speed spine switching, designed for the 800G era. Building on the proven 7060DX4-32-F platform, the DX5 generation delivers two major architectural advances:
800G native performance: Each QSFP-DD port operates natively at 800G — double the per-port throughput of the 400G DX4-32-F. The same 32-port, 1RU form factor maintains 25.6 Tbps of non-blocking capacity while supporting up to 2× the per-port bandwidth, enabling seamless migration from 400G to 800G leaf infrastructure. Organizations scaling to 800G AI/ML clusters and next-generation storage networks benefit from native 800G connectivity without hybrid 400G/800G bridging.
114 MB shared packet buffer: The advanced switching architecture provides 114 MB of shared buffer pool — approximately 2× the 64 MB buffer of the 7060DX4-32-F and 5× the 22 MB buffer of the 7060CX2-32S. At 800G port speeds, burst events accumulate rapidly; the 114 MB shared pool absorbs AI training all-reduce traffic, NVMe-oF storage bursts, distributed inference traffic patterns, and east-west incast events without packet drops. For organizations running GPU clusters with 800G interconnect, this buffer depth is essential for maintaining network losslessness and preventing PFC-triggered training iteration stalls.
Flexible breakout architecture: The QSFP-DD connector supports native 800G, 400G, 200G, and 100G speeds within the same physical interface, allowing the DX5-64E to transition from 100G fabric infrastructure to 800G leadership without separate line cards or migrations. A single DX5-64E spine can simultaneously interconnect 100G, 200G, 400G, and 800G tiers of the network.
For organizations running 7060DX4-32-F or 7060CX2-32S spines today and planning 800G leaf infrastructure, the DX5-64E represents the in-family upgrade path: same EOS feature set, same management tooling, same 1RU footprint, with 800G per-port bandwidth and substantially deeper buffer for the bursty, synchronized traffic patterns that define modern AI/ML clusters.
25.6 Tbps Non-Blocking Architecture
The DCS-7060DX5-64E-F delivers 25.6 Tbps of full-duplex, non-blocking switching capacity across all 32 QSFP-DD ports — or 51.2 Tbps in full-duplex bidirectional mode. Every port operates simultaneously at 800G line rate without oversubscription — a critical requirement for spine switches where east-west bandwidth and burst absorption are the architectural constraints. This throughput ceiling holds regardless of traffic mix, packet size distribution, or active flow count, providing the consistent, predictable performance that 800G leaf-spine and AI/ML fabric designs require. A single DCS-7060DX5-64E-F spine can service up to 32 × 800G leaf switches at full line rate, or up to 64 × 400G leaf connections via breakout, or up to 128 × 200G connections — all without fabric head-of-line blocking.
825 ns Cut-Through Latency
Operating in cut-through switching mode, the 7060DX5-64E-F delivers 825 nanoseconds of port-to-port latency with consistent, low-jitter performance across all 32 ports. This sub-microsecond performance is achieved at 800G speeds — a fundamentally harder target than 400G switching, given that 800G ports carry 2× the data volume per clock cycle. The 825 ns latency represents excellent sub-microsecond performance for AI/ML training fabrics, distributed computing, GPU cluster interconnect, and storage networking. The additional latency compared to the 700 ns DX4-32-F is offset by the 2× per-port bandwidth and 114 MB buffer depth that 800G workloads demand.
Port Density and Multi-Speed Flexibility
The 7060DX5-64E provides 32 × QSFP-DD ports, each supporting multiple speeds and breakout configurations:
800GbE — native full-rate for 800G spine-to-spine, spine-to-leaf, or DCI connections
400GbE — dual 400G operation within a single QSFP-DD port for aggregation or backward-compatible leaf connectivity
200GbE — quad 200G operation within a single QSFP-DD port for distributed deployments
100GbE — 8× 100G operation within a single QSFP-DD port for connectivity to existing QSFP28 infrastructure via breakout cables
4 × 100GbE breakout — connect up to 128 × 100G leaf switches from a single 1RU spine, using standard QSFP-DD to 4×QSFP28 breakout cables
2 × 200GbE breakout — dual 200G connectivity within a single QSFP-DD port for bonded uplinks or aggregation nodes
This per-port flexibility allows a single 7060DX5-64E spine to simultaneously service native 800G leaf switches, connect to existing 400G leaf infrastructure via 2× breakout, and provide 100G connectivity for legacy infrastructure — covering an entire multi-generation migration without hardware changes. A fabric that begins with 128 × 100G breakout connections can progressively consolidate toward 32 native 800G connections as leaf hardware is upgraded, using the same DX5-64E spine throughout.
Optics, Cables, and Interoperability
The DCS-7060DX5-64E-F supports a broad ecosystem of standards-based optics and cables:
800G QSFP-DD: 800GBASE-DR8, SR8, and other 800G QSFP-DD standards for short-reach and long-reach spine-to-leaf and spine-to-spine connections
400G via breakout: QSFP-DD to 2×QSFP-DD breakout for dual 400G configurations
200G via breakout: QSFP-DD to 4×QSFP-DD breakout for quad 200G configurations
100G via breakout: QSFP-DD to 4×QSFP28 breakout DAC and AOC cables for connectivity to existing 100G leaf switches
Industry-standard optics: Compatible with IEEE 802.3 standards for 800GbE, 400GbE, 200GbE, and 100GbE
114 MB Deep Shared Buffer: Built for 800G AI, Storage, and Synchronized Traffic
The 114 MB shared packet buffer of the DX5-64E is engineered for the most demanding modern workloads. Unlike fixed-per-port buffer architectures, the shared pool dynamically allocates buffer capacity to the ports and queues that need it most — a critical property when traffic is asymmetric, bursty, or subject to many-to-one incast patterns at 800G scale.Three workload categories benefit directly from this buffer depth:
800G AI/ML training fabrics: Distributed training jobs at 800G scale with collective operations (AllReduce, AllGather) generate synchronized, simultaneous bursts from hundreds or thousands of GPUs toward the same destination. Without sufficient buffer, these bursts cause packet drops, trigger RoCE retransmissions, and stall training iterations. The 114 MB buffer absorbs these all-reduce events at the spine layer, maintaining GPU utilization and keeping training time predictable even during peak collective traffic.
High-speed NVMe-oF and storage fabrics: Storage reads and writes at 800G generate large, bursty transfers that arrive in waves. The DX5-64E’s deep shared buffer prevents head-of-line blocking and packet drops that force storage retransmissions and inflate I/O latency — particularly important when multiple compute nodes simultaneously read from the same NVMe-oF storage pool at high bandwidth.
East-west incast in 800G leaf-spine fabrics: When multiple leaf switches simultaneously send traffic to the same destination through a spine at 800G rates, the spine port toward that destination absorbs an incast burst many times the individual leaf rate. The 114 MB shared pool provides the buffer headroom to absorb these events without drops, even when several incast events coincide at high port utilization.
At approximately 2× the buffer depth of the 7060DX4-32-F (64 MB), the DX5-64E is the clear choice when 800G workload characteristics demand spine-layer buffer headroom alongside native 800G port density.
Advanced Load Balancing and Traffic Engineering
The DCS-7060DX5-64E-F supports advanced Arista EOS traffic engineering capabilities that adapt to real-time network conditions and optimize traffic distribution across ECMP paths. Features include:
Dynamic Load Balancing (DLB): Real-time flow rebalancing for AI/ML all-reduce and storage traffic patterns, minimizing congestion and optimizing spine utilization
Cluster Load Balancing (CLB): Advanced hashing and traffic steering for GPU cluster traffic, particularly valuable during synchronized collective operations
AI Analyzer: Hardware-based monitoring of ECMP utilization at 100 microsecond granularity for real-time traffic visibility
Spine-Optimized Fabric Support: VXLAN, EVPN, and 128-Way ECMP
The 7060DX5-64E-F delivers the full Arista EOS spine feature set for modern data center and AI/ML fabric architectures:
VXLAN: Spine-layer VXLAN routing for scalable overlay fabrics with large VNI counts across multi-tenant environments
EVPN: BGP-based control plane for distributed MAC/IP learning, multi-tenancy, and seamless MAC mobility across the fabric
Up to 128-way ECMP: Maximum path diversity across the spine layer, distributing east-west load evenly across all leaf uplinks and eliminating single-path bottlenecks
BGP and IS-IS: Full-featured underlay routing for IP fabric, routed-spine, and eBGP-based CLOS topologies
MLAG (Multi-Chassis Link Aggregation): Up to 64-way MLAG for redundant dual-homed leaf switch connectivity without STP convergence dependency
RoCEv2 and Lossless Ethernet
The DX5-64E provides full support for lossless Ethernet fabrics required by GPU cluster interconnect:
RoCEv2 (RDMA over Converged Ethernet): GPU-Direct RDMA support with Per-Priority Flow Control (PFC) for zero-loss fabric operation
Priority Flow Control (PFC): Per-priority pause mechanism to prevent packet loss during buffer exhaustion
Data Center Bridging (DCB/DCBX): 802.1Qaz Explicit Congestion Notification (ECN) support for advanced traffic engineering
Advanced Congestion Control: DCQCN (Data Center Quantized Congestion Notification) for RoCEv2 flow control optimization
Telemetry, Monitoring, and Real-Time Insight
The DCS-7060DX5-64E-F includes Arista’s full telemetry stack for spine-layer observability at 800G scale:
LANZ (Latency Analyzer): Per-port, real-time queue depth visibility and microburst detection — essential for diagnosing congestion events at the 800G spine without impacting production traffic
sFlow: Continuous traffic sampling for east-west flow analysis, elephant flow detection, and capacity planning across 800G uplinks
AEM (Advanced Event Management): Rule-based, programmable alerting for link events, queue thresholds, and routing protocol state changes at the spine layer
Streaming Telemetry: High-frequency counter and state export to gRPC collectors, Grafana, Prometheus, and third-party NMS tools
EOS Automation and Extensibility
Running on Arista EOS®, the DCS-7060DX5-64E-F is built for automation-first network operations:
Native on-box Python and Bash scripting via the Linux shell for event-driven automation
JSON-RPC eAPI for programmatic configuration — integrates with Ansible, Terraform, Salt, and Nornir
CloudVision® for centralized configuration management, zero-touch provisioning, network-wide change control, and topology visualization
OpenConfig and gNMI/gRPC for model-driven management and high-frequency streaming state export
Zero-Touch Provisioning (ZTP) for fully automated day-0 configuration of new spine switches without manual intervention
Front-to-Rear Airflow and Data Center Fit
The “-F” airflow configuration provides front-to-rear (forward) cooling, where cool air enters from the non-port side of the switch and exhausts from the port side. This is the standard configuration for:
Traditional hot-aisle/cold-aisle containment deployments where cold air is supplied from the front of the rack
Racks where the majority of compute and network gear already uses front-to-rear airflow
Colocation facilities that standardize on forward airflow for all customer equipment
New data center builds following ASHRAE thermal guidelines
The DCS-7060DX5-64E is available exclusively in front-to-rear (“-F”) airflow. Organizations requiring rear-to-front cooling should evaluate rear-cooled variants or consult with BrightStar Systems for alternative configurations.
Power Efficiency
The DCS-7060DX5-64E-F delivers approximately 17 W per active 800G port at typical utilization, with redundant power supplies. The 548W typical power draw for a 32-port 800G spine switch demonstrates excellent power efficiency relative to the bandwidth delivered — providing 2× the per-port throughput of a 400G spine at comparable total power consumption. Dual redundant, hot-swappable power supplies ensure continuous operation through PSU failures without scheduled maintenance windows.
Reliability and High Availability
The DCS-7060DX5-64E-F is engineered for 24/7/365 operation in mission-critical fabrics:
Stateful Fault Repair (SFR): Automatic detection and healing of transient packet forwarding errors without traffic interruption
Stateful Fault Containment (SFC): Isolation of faulty hardware components to prevent cascading failures
Smart System Upgrade (SSU): Graceful hitless OS upgrades without traffic disruption or connection loss
Accelerated Software Update (ASU): Fast in-place OS updates with minimal downtime
Deployment Scenarios and Industry Applications
800G AI/ML Training Fabrics: The primary use case the DX5-64E is engineered for — 32×800G spine connectivity with 114 MB buffer for GPU cluster all-reduce traffic at 800G scale, DLB for real-time load rebalancing, CLB for GPU collective traffic steering, and LANZ for microburst visibility during training runs. Supports RoCEv2 with PFC for zero-loss fabric operation. Ideal for organizations scaling beyond 400G to native 800G GPU interconnect in HPC and AI research facilities.
400G/800G Mixed-Generation Leaf-Spine Fabrics: Using breakout cables, the DX5-64E connects to existing 400G leaf infrastructure today while supporting native 800G leaf uplinks as the fabric upgrades — eliminating the need to replace the spine tier during a generational transition from 400G to 800G.
Ultra-High-Throughput NVMe-oF Storage Fabrics: 25.6 Tbps non-blocking capacity with 114 MB buffer depth for storage networks where burst tolerance at the spine layer directly determines storage I/O consistency, tail latency, and end-to-end throughput in disaggregated storage architectures.
Hyperscale and Cloud Data Centers: 25.6 Tbps non-blocking spine capacity with 128-way ECMP and 800G per-port bandwidth for full-bisection-bandwidth cloud fabric designs and large-scale multi-tenant deployments.
Large Enterprise Data Centers: Spine upgrade path for enterprise data centers moving from 400G to 800G, with backward compatibility through QSFP-DD multi-speed support preserving existing optics investments.
High-Performance Computing Clusters: HPC workloads generating synchronized incast patterns and all-to-all communication benefit from 114 MB buffer depth, DLB/CLB load balancing, and native 800G per-port bandwidth for consistent job completion times and minimized iteration stalls.
Lifecycle, Reliability, and Future-Proofing
The 7060DX5-64E-F is built for long operational lifecycles with high MTBF ratings, field-replaceable fans and power supplies, and the consistent Arista EOS release cadence that network teams depend on for long-term supportability. As 800G becomes the standard fabric speed for next-generation AI/ML clusters and hyperscale deployments, the DX5-64E is positioned as a long-lived spine asset rather than a transitional platform. Its multi-speed QSFP-DD ports preserve downward compatibility with 100G, 200G, and 400G infrastructure as the surrounding fabric is progressively upgraded, protecting the spine investment across multiple refresh cycles of the leaf layer.
Similar Arista 7060 Models to Consider
Arista DCS-7060DX4-32-F – 32×400G 7060DX4 spine with 64 MB buffer and 700 ns cut-through latency. The right choice when 400G is sufficient and lower latency is required.
Arista DCS-7060CX2-32S-F – 32×100G 7060CX2 spine with 22 MB buffer and 450 ns cut-through latency. The right choice when 100G is sufficient and sub-500 ns latency is required.
Arista DCS-7060PX5-64E-F – 32×800G OSFP variant with identical specs except for OSFP interface and 4.29.1 minimum EOS. Use when OSFP optics and Linear Pluggable Optics are preferred.
The 800G Spine Built for Next-Generation AI, Storage, and High-Density Fabrics
The Arista DCS-7060DX5-64E-F brings together 25.6 Tbps of non-blocking capacity, 32 native 800G QSFP-DD ports, 114 MB of shared packet buffer, and the full depth of Arista EOS automation into a 1RU spine switch built for the workloads that define next-generation data center infrastructure — 800G AI training, high-speed NVMe-oF storage, GPU cluster interconnect, and ultra-high-density east-west fabrics. Its front-to-rear airflow makes it the natural fit for standard hot-aisle/cold-aisle data center deployments, and its multi-speed QSFP-DD ports protect existing 100G/200G/400G infrastructure investments while enabling a clean migration to 800G. Available from BrightStar Systems fully tested, reset to factory defaults, and backed by a 1-year in-house warranty.
SPECIFICATIONS
Arista DCS-7060DX5-64E-F Technical Specifications
General Specifications
Model Name: DCS-7060DX5-64E-F
Form Factor: 1RU Rackmount
Dimensions (W × H × D): 43.99 × 4.37 × 56.56 cm (17.3 × 1.72 × 22.24 inches)
Management Ports: 1 × 10/100/1000 Ethernet, 1 × RS-232 Serial Console (RJ-45), 1 × USB
Max 800GbE Ports: 32
Max 400GbE Ports: 64 (QSFP-DD to 2×QSFP-DD 400G)
Max 200GbE Ports: 128 (QSFP-DD to 4×QSFP-DD 200G)
Max 100GbE Ports: 256 (QSFP-DD to 8×QSFP-DD 100G, or QSFP-DD to 4×QSFP28 breakout)
Max 50GbE Ports: 256 (via breakout)
Max 25GbE Ports: 256 (via breakout)
Max 10GbE Ports: 256 (+2 SFP+)
Optics Support: 800GBASE-DR8, SR8, and other 800G standards; full breakout support to 400G/200G/100G via standard cables; full optics list at arista.com/transceivers-cables
