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InfoResearchPeer-reviewed
AS-Level Topology Inference for Path-Aware Networking
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Summary
This paper studies AS-level topology inference for path-aware networking (PAN) with prefix-deterministic path identifiers (PIDs), such as those used by CoLoR, where PID-Prefix identifies inter-domain paths and PID-Suffix is reserved for security functions. The authors propose an Alternating Expanding and Checking (AEC) algorithm that iteratively builds a tree-like AS-level topology from in-packet PIDs. In experiments on an empirical Internet topology of 201 ASes, AEC reached 99.6% accuracy when the observer received only 30 packets from each AS.