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Robust Hierarchical Mobile IPv6(RH-MIP6). An Enhancement Survivability & Fault-Tolerance in Mobile IP System. Outline. Introduction Previous Work Architecture(RH-MIPv6) RH-MIPv6 Operations Failure Recovery Mechanism Performance Analysis Simulation Conclusion Reference. Introduction.
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Robust Hierarchical Mobile IPv6(RH-MIP6) An Enhancement Survivability & Fault-Tolerance in Mobile IP System
Outline • Introduction • Previous Work • Architecture(RH-MIPv6) • RH-MIPv6 Operations • Failure Recovery Mechanism • Performance Analysis • Simulation • Conclusion • Reference
Introduction • In the HMIPv6, HAs and MAPs are two points of failure and potential performance bottlenecks. • When the accident attack such as DoS occurs in the HA or the MAP, the failure leads to the loss of network connectivty to all the MNs.
Introduction (cont.) • Router Advertisement received from multiple MAPs, an MN configures two regional care-of address: • Primary RCoA (P-RCoA) • Secondary RCoA (S-RCoA)
Previous Work • The work can be classified into two categories: • Redundancy-based Schemes • Refresh-based Schemes
Operations in RH-MIPv6(Cont.) • Extension to the Binding Update
Failure Recovery Mechanism • CN detects MAP failure • MN detects MAP failure • ICMPv6 error message • Destination unreachable • Packet too big • Time exceed • Parameter problem
Performance Analysis(Cont.) • TRH-MIPV6=Te+ Tf (where CN detects MAP’s failure) TRH-MIPV6=Tg+ Th (where MN detects MAP’s failure)
Simulation • Simulation model
Simulation(Cont.) • Packet loss time of HMIP is about 2.2s • Packet loss time of RH-MIPv6 is about 0.9s
Conclusion • Fault-tolerance and reliability are critical issues for successful deployment and operation of mobile systems. • RH-MIPv6 has faster recovery time about 60% compared with HMIPv6.
References [1] D.Tipper et al., “Providing Fault Tolerance in Wireless Access Networks,”IEEE Communications Magazine, January 2002. [2] H. Soliman, C. Castelluccia et al, “Hierarchical Mobile IPv6 managemenet (HMIPv6),”IETF draft, draft-ietf-mobileip-hmipv6-07.txt [3] H. Omar et al., “Supportinf for Falt Tolerance in Local Registration Mobile IP Systems,”MILCOM, 1998. [4] Rajib Ghosh, George Varghese, “Fault-Tolerant Mobile IP,”Washington University Technical Report WUCS-98-11, 1998. [5] Cisco Co.Ltd, “Mobile IP Home Agent Redundancy,” http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120n ewft/120t/120t2/haredun.htm. [6] S. Knight, D. Weaver et al.,” Virtual Router Redundancy Protocol,” IETF RFC 2338.