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Diagnosing Packet Loss: Telling Link Errors, Queue Drops, and Rate Limiting Apart

Disclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. "We are seeing packet loss" is a report, not a diagnosis.

  • Measure packet loss with multiple probes and packet sizes
  • Examine MTR output, ignore loss stopping at final hop
  • Inspect local host for errors, drops, or overflows

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