• Stacked arista dcs 7050sx2 128 f network switches with metallic gray chassis and rows of black ports in 2ru
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Arista

Arista DCS-7050SX2-128-F | 7050SX2 96-Port 10G SFP+ Switch, 8x 40G QSFP+, 2RU

DCS-7050SX2-128-F

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Description

The Arista DCS-7050SX2-128-F is a high-density Layer 3 data center switch featuring 96x 10GbE SFP+ ports and 8x 40GbE QSFP+ uplinks in a compact 2RU form factor. Engineered for low-latency leaf-spine architectures, it delivers 2.56 Tbps switching capacity with industry-leading power efficiency at less than 2 watts per 10GbE port. The front-to-back airflow design ensures optimal cooling in standard data center environments, while redundant hot-swappable power supplies and fans provide enterprise-grade reliability for mission-critical workloads.

Features

Wire-speed Layer 2 and Layer 3 switching with full routing protocol support
- Advanced Layer 3 protocols: BGP, OSPF, ISIS, PIM, MLAG, and VXLAN
- 128-way ECMP and 64-way MLAG for scalable leaf-spine network designs
- 16 MB shared packet buffer with Dynamic Buffer Allocation (DBA) for lossless forwarding
- Ultra-low latency: 550 ns in cut-through mode, 600 ns in store-and-forward
- DANZ (Data Analyzer), sFlow, and LANZ (Latency Analyzer) for real-time network monitoring and visibility
- Flexible Unified Forwarding Table (UFT) for optimized L2/L3 resource allocation
- VXLAN routing and bridging for network virtualization and overlay networks
- Redundant hot-swappable power supplies and N+1 hot-swappable fans
- Front-to-back airflow optimized for cold aisle data center deployments
- Arista EOS with Zero Touch Provisioning, VMTracer, and native Linux automation tools
- Energy efficient design with less than 2 watts per 10GbE port
- Optional built-in SSD for advanced logging and on-switch data capture
- Consistent EOS software across all Arista platforms for simplified management

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Port Configuration: 96x 10GbE SFP+ ports, 8x 40GbE QSFP+ ports
- Switching Capacity: 2.56 Tbps
- Forwarding Rate: 1440 Mpps (wire-speed)
- Latency: 550 nanoseconds (cut-through mode)
- Buffer Memory: 16 MB shared packet buffer with Dynamic Buffer Allocation
- MAC Address Table: Up to 288,000 entries
- Layer 3 Features: BGP, OSPF, ISIS, PIM, VXLAN routing and bridging, up to 128-way ECMP
- Form Factor: 2RU rackmount
- Dimensions: 3.5 inches H x 19 inches W x 18.1 inches D
- Weight: Approximately 33 lb (15 kg)
- Power Supplies: Dual redundant hot-swappable AC power supplies (PWR-750AC, 100-240VAC)
- Power Consumption: Less than 2 watts per 10GbE port typical
- Airflow: Front-to-back (indicated by -F suffix)
- Management: Arista EOS (Extensible Operating System), CLI, web GUI, SNMP, Zero Touch Provisioning
- Operating System: Arista EOS with Linux-based automation tools

FAQs

Q: What is the difference between the DCS-7050SX2-128-F and DCS-7050SX2-128-R models?
A: The difference is in airflow direction. The -F model features front-to-back airflow for cold aisle deployments, while the -R model has back-to-front (reverse) airflow. Both models have identical port configurations and performance specifications.

Q: Does the DCS-7050SX2-128-F support VXLAN for network virtualization?
A: Yes, the switch supports VXLAN routing, bridging, and gateway functions, enabling seamless integration between physical and virtualized network environments. This makes it ideal for modern software-defined data center architectures.

Q: What licensing is required for Layer 3 routing protocols on this switch?
A: Advanced Layer 3 features such as BGP, OSPF, ISIS, PIM, and NAT require an Enhanced L3 License (LIC-FIX-2-E). Basic Layer 2 and limited Layer 3 functionality is available without additional licensing.

Q: Is the DCS-7050SX2-128-F suitable for low-latency trading or high-frequency computing applications?
A: Yes, with latency as low as 550 nanoseconds in cut-through mode and wire-speed forwarding across all ports, this switch is well-suited for latency-sensitive applications including high-frequency trading, HPC clusters, and real-time analytics workloads.

Q: What transceivers are compatible with the SFP+ and QSFP+ ports?
A: The switch supports a wide range of Arista-compatible SFP+ transceivers (1G and 10G) and QSFP+ modules (40G) including SR, LR, ER, and DAC options. Transceivers are sold separately and should be selected based on specific distance and media requirements.

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