✦ The 1.6-Terabit GenerationNarrow moat

The iron for the next phase arrived June 9, 2026: the 7060XE7 series, Arista's first 1.6-terabit-per-port platform — around 100 terabits of switching in a box, built on Broadcom's Tomahawk 6, in air-cooled, liquid-cooled and high-density 128-port configurations, with first systems shipping in the fourth quarter of 2026¹. Doubling the speed grade is the industry's oldest ritual; two details make this launch a bet rather than a refresh.

First, the target is the rack-scale AI machine — the unified radix wiring accelerator racks together — which puts Arista's merchant-silicon iron in direct comparison with Nvidia's vertically integrated rack fabrics at the exact layer Nvidia considers home turf. Second, and more telling: the 7060XE7 runs EOS or an open network operating system. Arista selling hardware that will happily run someone else's software is a concession to how hyperscalers actually buy — SONiC and open stacks won that argument — and a wager that the hardware engineering and supply relationship matter even where the sacred software moat does not apply.

Watch three things from Q4 2026: shipment volumes as the titans' next-generation clusters land; the EOS-versus-open mix on those boxes, which is the moat's own telemetry; and gross margin, already drifting from 65.6% to 63.4% on titan discounts — a 1.6T generation sold open and discounted would be growth that quietly costs the thing that made Arista special.