Meta's Disaggregated Scheduled Fabric (DSF) — VOQ, credit-scheduled, cell-sprayed (Jericho3-AI leaves, Ramon3 fabric) — reported at an interconnected GPU scale of 18K x 800G; productized scheduled fabrics (DES-class) list >27,000 x 800G ports in a single logical switch
18K x 800Gobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Caveat | DES-class >27k figure is a vendor datasheet maximum (Arista 7700R4), not a deployment report. |
| As of | 2025-10 |
| Source | Engineering at Meta |
| Review | checking…review by 2026-12-02 · standard cadence |
| Recorded changes | last 2026-08-24 · 2 revisions tracked |
| Claim id | meta-dsf-scheduled-fabric-scale |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.