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Umesh Krishnaswamy

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HEDGE: Traffic Engineering with Probabilistic Link CapacitiesNSDI '262026-05-04
Lab experiments and a production cloud trace show that individual wavelengths on the same fiber fail independently enough to make link capacity a discrete…
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Finding Adversarial Inputs for Heuristics using Multi-level Optimization21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24)2024-04-16
MetaOpt is a solver-backed tool that encodes heuristics and an optimal baseline as a bilevel optimization, automatically rewrites inner problems into…
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Solving Max-Min Fair Resource Allocations Quickly on Large Graphs21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24)2024-04-16
Converts the iterative max‑min fair solver into a single fast optimization by using epsilon weighting plus a sorting network, and introduces a multipath…
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OneWAN is better than two: Unifying a split WAN architectureNSDI 20232023-04-17
Presents a deployed architecture that merges SWAN and CORE into ONEWAN to carry Internet and inter‑datacenter traffic under a single software‑defined…
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OneWAN Traffic Engineering: Unifying Inter-Datacenter and Internet BackbonesNetworking @Scale Fall 20222022-11-14
Microsoft consolidates AS8075 and AS8074 into OneWAN, a SDN-controlled backbone that connects 60+ Azure regions and 190 PoPs and handles 10× the devices and…
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Decentralized cloud wide-area network traffic engineering with BLASTSHIELD19th USENIX Symposium on Networked Systems Design and Implementation (NSDI '22)2022-04-04
BLASTSHIELD decentralizes Microsoft’s WAN by slicing the network and running independent slice controllers that program only local path segments (via MPLS) and…
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