Route Attestation Overhead

• Transmission

  • RAs add ~450 bytes to a typical (3.6 ASes in path) UPDATE of 63 bytes, 700% overhead!
  • But UPDATEs represent a very small portion of all traffic, so steady state bandwidth for RA transmission is only ~ 1.4Kb/s

• Processing

  • Average of 3.6 signature validations per received UPDATE and 1 generation per emitted UPDATE
  • Peak rates ~ 18/s validation and ~5/s generation w/o caching (peak estimated as ten times average)
  • UPDATE caching reduces validation rate by ~50%
  • Start up transient would overwhelm a speaker, thus some form of NV storage or heuristic is required

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