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Resilient Multicast using Overlays

Enhance data delivery ratios while minimizing latency. Address node failures for uninterrupted data flow. Utilizes randomized forwarding and triggered NAKs for robustness.

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Resilient Multicast using Overlays

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  1. Resilient Multicast using Overlays Suman Banerjee, Seungjoon Lee, Bobby Bhattacharjee, Aravind Srinivasan Made by: Yao Zhao

  2. Motivation • A multicast data recovery scheme that improves data delivery ratios while maintaining low end-to-end latency • Node failures are significant • Failure of non-leaf node causes data outage for nodes downstream

  3. Related work • SRM • NAK • Tree-based protocols • RMTP, TMTP, STROM • FEC based • APES

  4. Probabilistic Resilient Multicast • Randomized forwarding • Proactive • Triggered NAKs • Reactive • Extentions

  5. Randomized Forwarding (1)

  6. Randomized Forwarding (2) • Each node randomly select small number (r) of other overlay nodes and forward data to them with a small probability β. • Overhead: rβduplicated data • Extensions • Loss correlation

  7. Randomized Forwarding (3)

  8. Triggered NAKs

  9. Ephemeral Guaranteed Forwarding (EFG)

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