Arista DCS-7280CR3A-32S-F | 7280R3A 28-Port 100G + 2x 400G Data Center Switch, 4.8 Tbps

Q: What is the difference between the 7280CR3A-32S standard and FLX versions?
A: The FLX version supports over 256K routes and enhanced MPLS/VXLAN capabilities, while the standard version delivers up to 1.4 million routes with the FlexRoute engine. Both models share the same 28x 100G + 2x 400G port configuration and switching capacity.

Q: Can the QSFP-DD ports operate at lower speeds?
A: Yes, the 2x QSFP-DD ports support flexible speeds including 400GbE, 200GbE, and 100GbE, and can break out to multiple lower-speed connections. The 28x 100G QSFP28 ports also support 40GbE, 50GbE, and can break out to 4x 25GbE or 4x 10GbE.

Q: What deployment scenarios is the 7280CR3A-32S best suited for?
A: This switch is ideal for data center leaf and spine architectures, high-performance storage networks, content delivery networks (CDNs), cloud data centers, and service provider edge applications requiring deep buffers and high-density 100G/400G connectivity.

Q: Does this model require licensing?
A: Arista switches typically include core EOS software features without additional licensing. Advanced features like CloudVision management and certain security capabilities may require subscriptions. Contact your Arista representative for specific licensing details.

Q: What makes the 7280R3A suitable for lossless forwarding?
A: The 7280R3A features 4 GB of dynamic deep buffers and Virtual Output Queuing (VOQ) architecture, which prevents packet loss during traffic congestion. This is critical for storage networks, high-frequency trading, and workloads requiring deterministic performance.