Arista DCS-7280R4-64QC-10PE-R | 7280R4 64-Port 100G + 10-Port 800G Switch Router

Q: What is the difference between the 7280R4 and 7280R4K models?
A: The 7280R4K variant adds large-scale routing support (over 5 million IP routes), line-rate TunnelSec AES-256-GCM encryption on all QSFP and OSFP ports, and enhanced Algorithmic ACL capabilities. The base 7280R4 supports standard internet-scale routing without encryption.

Q: What does the -R suffix indicate in this SKU?
A: The -R suffix denotes rear-to-front airflow, meaning air flows from the fan side to the switch port side. This is also called reverse airflow. Models with -F suffix have front-to-rear airflow, while # suffix models ship with configurable airflow and require a louver kit to specify direction.

Q: What topologies and use cases is this switch designed for?
A: The 7280R4 is optimized for cloud data center leaf-spine architectures, AI/ML clusters, content delivery networks, service provider backbones, high-performance IP storage, and data center interconnects. It supports MLAG, ECMP, EVPN-VXLAN, MPLS, and Segment Routing for flexible deployment.

Q: What power supply options are available?
A: The switch supports hot-swappable dual power supplies including PWR-2411-AC (2400W, 200-240 VAC), PWR-2411-DC (2400W, -48 to -60 VDC), PWR-3211-HV (3200W, 200-277 VAC), and PWR-3211-DC (3200W, 240-380 VDC). All models ship with dual redundant PSUs.

Q: Does this switch require separate software licenses?
A: Arista EOS requires perpetual feature licenses. The 7280R4 platform is classified as FIX-4 in Arista's licensing framework and typically requires LIC-FIX-4 licenses for advanced features such as VXLAN, EVPN, MPLS, and enhanced automation capabilities. Base switching functionality is included.