Performance Metrics of Multipath State Aware Concurrent Multipath Transfer using Redundant Transfer in Stream Control Transmission Protocol Multihoming for Symmetric Paths

Subramaniam Subramaniam

doi:10.3844/jcssp.2011.1859.1866

Abstract

Problem statement: In multihomed host, if data transfer starts using CMT, unaware of paths status causes delay in data transfer or packet loss due to path failure. Transmission Path (one or more paths) failures result in out-of-order data delivery causing receiver buffer blocking and preventing sender from transmitting further data. Approach: Multipath State Aware Concurrent Multipath Transfer using Redundant Transfer (MSACMT-RT), status of multipath is determined, initially and periodically before transmission. Data transfer begins immediately after determining the path status, for a particular interval of time and later transfers with CMT only for predefined period. Results: We discuss MSACMT-RT performance in symmetric paths with the constrained receiver buffer (rbuf) value of 128 and 256KB’s. Our simulation result shows Percentage of throughput Increase between 5-15% for transfer of 20 and 40MB file sizes. Conclusion: By using MSACMT-RT we infer that our algorithm outperforms on par or better but never worse than Concurrent Multipath Transfer Potentially Failed (CMT-PF). MSACMT-RT mechanism in alternate paths increases the throughput during aggressive failures and Non-failure scenarios. Larger the file sizes of file transfer, greater the degree of throughput with less transfer time is achieved.

Highlights

The Stream Control Transmission Protocol (SCTP) over an IPv4/IPv6 networks is a general purpose transport protocol featuring multi-homing and multi streaming (Al-Talib et al, 2009) support
We present some modifications to Concurrent Multipath Transfer Potentially Failed (CMT-PF) to prevent side-effects of the RTO expiry for improving the throughput efficiency.We work on the foundations of superior system already proposed by (Natarajan et al, 2008) (Yilmaz et al, 2010), Concurrent Multipath Transfer (CMT)-SCTP the SACK chunks gap were Non-Renegeable SACK (NR-SACK), which allows a receiver to declare gap acknowledgements
We discuss our flow in the following style, CMT association, they have not discussed literature review discusses from evolution to with finite rbuf (Constrained receiver buffer)

Summary

Introduction

The Stream Control Transmission Protocol (SCTP) over an IPv4/IPv6 networks is a general purpose transport protocol featuring multi-homing and multi streaming (Al-Talib et al, 2009) support. Since our experimental setup introducing a new „„ Potentially-Failed” (CMT-PF) and is to have almost identical path QoS, the second improved the performance of data transmission interface A2 of the sender A is connected to the comparing with receiver buffer blocking in CMT.

Objectives

Results

Conclusion