Arista 7050X2 96-Port 10GbE SFP+ + 8-Port QSFP+ Layer 3 Switch — DCS-7050SX2-128-R

The Arista DCS-7050SX2-128-R is a high-density 96-port 10GBase-X SFP+ Layer 3 managed data center switch with 8x QSFP+ (40GbE) uplink ports and back-to-front (port-side to non-port-side) airflow in a 1U rack-mountable form factor. Running Arista EOS (Extensible Operating System), it delivers wire-rate Layer 3 switching for data center spine-leaf architectures, high-frequency trading, and cloud deployments requiring maximum 10GbE port density with 40GbE uplinks.

Key Features

• 96x 10GbE SFP+ Ports: Maximum 10GbE density for data center access/leaf layer
• 8x QSFP+ (40GbE) Uplinks: High-speed spine connectivity
• Back-to-Front Airflow (-R): Port-side to non-port-side for hot-aisle/cold-aisle deployments
• Arista EOS: Programmable, Linux-based network operating system
• Wire-Rate Layer 3: Non-blocking switching at full line rate
• 1U Form Factor: Maximum density in minimal rack space

Technical Specifications

• Part Number: DCS-7050SX2-128-R
• 10GbE Ports: 96x SFP+
• Uplink Ports: 8x QSFP+ (40GbE)
• Airflow: Back-to-front (port-side to non-port-side)
• Switch Type: Layer 3 Managed
• OS: Arista EOS
• Form Factor: 1U rack-mountable

Use Cases

• Data Center Leaf Layer: High-density 10GbE server connectivity in spine-leaf fabric
• High-Frequency Trading: Ultra-low latency switching for financial applications
• Cloud Infrastructure: High-density 10GbE for cloud server deployments
• Campus Core: High-density 10GbE aggregation for large campus networks

Compatibility Notes

• Compatible with 10GbE SFP+ DAC cables, AOC cables, and optical transceivers
• QSFP+ uplinks support 40GbE QSFP+ DAC cables and optical transceivers
• Managed via Arista EOS CLI, eAPI (REST API), and CloudVision
• -R suffix indicates back-to-front airflow — verify rack airflow direction before ordering

Frequently Asked Questions

What does the -R suffix mean?

The -R suffix indicates back-to-front (port-side to non-port-side) airflow — air enters from the port side and exits from the power supply side. This is suitable for hot-aisle/cold-aisle data center deployments where ports face the cold aisle.

What is Arista EOS?

Arista EOS (Extensible Operating System) is a Linux-based network OS with a programmable architecture, REST API (eAPI), and Python scripting support — enabling network automation and DevOps workflows.

Can the QSFP+ ports be broken out to 4x 10GbE?

Yes — each 40GbE QSFP+ port can be broken out to 4x 10GbE SFP+ using QSFP+ breakout cables, providing additional 10GbE port capacity.

Product Details

• Part Number: DCS-7050SX2-128-R
• Manufacturer: Arista Networks
• Model: 7050X2
• Product Type: 96-Port 10GbE Layer 3 Data Center Switch

Whether you are building a high-density data center leaf layer, deploying ultra-low latency switching for financial applications, or expanding cloud infrastructure with maximum 10GbE port density, the Arista DCS-7050SX2-128-R delivers the 96-port density, EOS programmability, and Arista reliability your data center demands.