Alive Protocols

• Tandem IMA protocol
• Porcupine's TRM
• Targon Crash detection scheme
• Very similar:
  • Set of "pingers", in a ring
  • One node suspects a failed node, becomes the leader
  • Broadcast a re-group to all
  • Nodes peform a "barrier"
    • Two phased to make sure
    • Why two phased?
  • New membership is broadcast from the leader

Previous slide

Next slide

Back to the index

View Graphic Version

No notes for slide 11