Arista DCS-7280CR3K-32D4-R | 7280R3 32-Port 100G Switch, 4x 400G QSFP-DD, 8GB Buffer

Q: What is the difference between the 7280CR3K and 7280CR3 models?
A: The 7280CR3K models feature expanded routing capabilities with support for up to 5 million IPv4 routes, 64GB of standard system memory, and enhanced forwarding profiles optimized for internet peering and large-scale routing applications. The K-variant is designed for deployment scenarios requiring internet-scale routing tables.

Q: What does the -R suffix indicate in this model number?
A: The -R suffix designates rear-to-front (reverse) airflow, where cool air is drawn in through the port side and exhausted through the rear. This is ideal for hot-aisle containment deployments. The corresponding -F model provides front-to-rear airflow for cold-aisle containment.

Q: Can this switch be used as both a leaf and spine switch?
A: Yes, the DCS-7280CR3K-32D4-R is suitable for both leaf and spine roles in modern data center architectures. Its high port density, deep buffers, and Layer 3 routing capabilities make it ideal for ECMP leaf-spine designs, VXLAN overlays, and MLAG topologies.

Q: What breakout options are supported on the 100G ports?
A: The 32x QSFP28 ports support flexible breakout configurations including 4x 25G, 4x 10G, 2x 50G, and 1x 40G per port. This allows the switch to scale from 32 to 96 physical interfaces depending on speed requirements, providing deployment flexibility for various use cases.

Q: Does this switch support advanced telemetry and automation features?
A: Yes, the 7280R3 Series includes comprehensive telemetry capabilities including Accelerated sFlow, IPFIX, LANZ (latency analysis), Inband Network Telemetry (INT), and streaming telemetry via gNMI. It integrates with Arista CloudVision for network-wide automation and supports Zero-Touch Provisioning, Python scripting, and REST APIs.