Arista 7280R3 Series

The Arista 7280R3 Series delivers universal leaf and switch-router capability in 1RU and 2RU fixed-configuration platforms, spanning 4.8 to 12.8 Tbps of forwarding capacity. Nineteen models cover configurations from 48x SFP+ 10G with 8x QSFP28 100G uplinks up to 36x QSFP-DD 400G with 12x QSFP28 100G ports, providing the flexibility to match the series to existing 10G/25G server tiers or purpose-built 100G/400G AI cluster fabrics. Full L2 and L3 feature support is standard, with MPLS, Segment Routing, EVPN-VXLAN, and BGP-LU adding IP/MPLS routing functionality that typical leaf switches omit.

Forwarding tables across the family accommodate 512K IPv4 host routes, 128K IPv4 LPM routes, 256K IPv4 LPM routes (depending on model variant), 128K MAC addresses, and 128-way ECMP across 2K groups providing the route scale needed to operate as a border leaf terminating internet routing tables or as a WAN edge node in SP environments. Models with -48YD or -100G suffixes expose native 100G uplinks suitable for direct peering, while -400G models address AI cluster interconnects where 400G-attached GPU servers require direct leaf attachment.