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- W4386709890 abstract "Recently, the adoption of Software Defined Networking (SDN) as a network infrastructure has gained significant popularity. Although the openness and programmability of SDN ease the construction of large complex networks, it is still challenging to diagnose faults in a complex datacenter-scale network, which is crucial to guarantee rigorous service level agreement (SLA) of upper-layer applications. Previous network diagnosis tools incur significant overhead in fine-grained telemetry, and usually lack the ability to automatically diagnose fine-grained faults. Although on-demand monitoring methods is proposed to reduce telemetry overhead, they struggle to effectively set static thresholds, which requires expert experience. In this paper, we present MARS, a lightweight system for anomaly detection with dynamic threshold and automatic root cause localization in programmable networking systems. MARS collects aggregated packet-level telemetry on demand and generates a ranked list of fine-grained fault culprits at multiple levels, including port-level, switch-level, and flow-level. Experimental evaluations show the cost-effectiveness of MARS, both in terms of network bandwidth and switch memory usage. Moreover, MARS achieves a 0.97 F1 score in anomaly detection, and 0.95 Recall at Top-2 and an overall 0.3 Exam Score in root cause localization." @default.
- W4386709890 created "2023-09-14" @default.
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- W4386709890 date "2023-08-07" @default.
- W4386709890 modified "2023-10-15" @default.
- W4386709890 title "MARS: Fault Localization in Programmable Networking Systems with Low-cost In-Band Network Telemetry" @default.
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- W4386709890 doi "https://doi.org/10.1145/3605573.3605622" @default.
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