Shim6 Assisted Mobility Scheme (SAMS)

Abstract

Devices with multiple interfaces are the future of mobile internet. Site Multi-homing by IPv6 Intermediation-Shim6 is a proposal presented in IETF to provide multi-homing support in IPv6 based networks. Although initially it was intended for static networks but recently it has been tested to provide end host mobility. By default, Failure detection and recovery in Shim6 is performed through REAchability (REAP) Protocol. When failures occur, REAP is activated and the communication is switched from the failed path to a different active path. Existing protocol for mobility management in IPv6 networks is the MIPv6. Due to the inherent flaws in MIPv6, some new protocols/techniques have been tested which improve the overall mobility performance in IPv6 networks. In this research work, we presented a mechanism for providing a “make before break” switching service. We call our proposed mechanism “Shim6 Assisted Mobility Scheme (SAMS)” as it provides both mobility and multi-homing support. We implemented LinShim6 with our proposed intelligent switching in wireless environment and presented the results. The proposed intelligent module anticipates the switch by continuously monitoring the QoS parameters for specific period of time and helps in decision making. Further we made the performance comparison between REAP based switching and the proposed switching mechanism. The comparison was made in terms of switching delay, packet loss, jitter, throughput and data transferred. Through experiments we have shown that the switching delay reduced by 20% to 20.286 ms and packet loss during switching reduces from 24.71% to 1.72%.