OneWAN is better than two: Unifying a split WAN architecture
summary
Presents a deployed architecture that merges SWAN and CORE into ONEWAN to carry Internet and inter‑datacenter traffic under a single software‑defined controller, scaling ~10× larger than SWAN and using traffic steering to avoid global route explosion by pushing full Internet tables only to aggregation routers; implements site labels, segment routing, per‑class tunnel weights, and fast local repair in hundreds of milliseconds; scales TE via a 30× reduction in path candidates and solver chaining (CLP/glob give ~5× speedup) and reports 95% of traffic migrated with ~10% capacity savings.
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chapters (11)
- 0:00Intro
- 0:32Traffic Engineering
- 4:25OneWAN routing in three parts
- 6:08OneWAN-TE traffic splitting
- 8:58Online path computation
- 10:03Priority faimess solver chaining
- 10:44Diverse path solver
- 11:55Traffic matrix measured by flow sampling
- 12:22Measuring anycast traffic
- 13:12Traffic matrix error correction
- 14:19Traffic migration
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