Presentation on theme: "Self-Managed Future Wireless Networks? Lixin Gao University of Massachusetts, Amherst."— Presentation transcript:
Self-Managed Future Wireless Networks? Lixin Gao University of Massachusetts, Amherst
Manageability as a Goal Monitoring Trouble-shooting Visibility Self-healing Robustness Complexity Do we even know how to quantify? Typical metrics: Performance: throughput Energy consumption Protocol Verification Well–behaved nodes Malicious nodes Selfish nodes
Too Early to Think about Manageability? Lessons learned from the Internet BGP – the de facto standard of interdomain routing Largest distributed system What do we know about its property? Stability Reliability: 99.999%?
No Guarantee of Long-Term Stability Unstable state: AS1: (0) AS2: (0) Stable state: AS1: (0) AS2: (1, 0) Simple extension of path vector protocol Policy-based routing
Packet Loss due to Transient Blackhole or Loops Failover events: 76% packets lost Recovery events: 26% packets lost Failover Recovery
Transient Blackhole or Loops Blackhole Forwarding Loops