文章基本信息

标题：Automatically Communication Path Creation and ReConfiguration in Dynamic Network Environment for Optimizing Performance to Netowk Applications
本地全文：下载
作者：Rakesh Kumar Singh
期刊名称：International Journal of Computer Technology and Applications
电子版ISSN：2229-6093
出版年度：2012
卷号：3
期号：2
页码：541-554
出版社：Technopark Publications
摘要：Accessing network services across a wide area network still remains a challenging task and the difficulty mainly comes from the heterogeneous and constantly changing network environment, which usually causes undesirable user experience for network-oblivious applications. A promising approach to address this is to provide network awareness in communication paths. Many challenging problems remain, in particular: how to automatically create effective network paths whose performance is optimized for encountered network conditions; how to dynamically reconfigure such paths when network conditions change; and how to manage and distribute network resources among different paths and between different network regions. This paper describes solutions for these problems, built into a programmable network infrastructure called Switching Network Services (SNS). The SNS infrastructure provides applications with network-aware communication paths that are automatically created and dynamically modified. SNS highlights four key mechanisms which are: a high-level integrated type-based specification of components and network resources; automatic path creation strategies; system support for low overhead path reconfiguration; and distributed strategies for managing and allocating network resources.We evaluate these mechanisms using experiments with typical applications running in the SNS infrastructure, and extensive simulation of a large scale network topology to compare with other alternatives. Experimental results validate the effectiveness of our approach, verifying that (1) the path-based approach provides the best and the most robust performance under a wide range of network configurations as compared to end-point or proxy-based alternatives; (2) automatic generation of network-aware paths is feasible and provides considerable performance advantages, requiring only minimal input from applications; (3) path reconfiguration strategies ensure continuous adaptation and provide desirable adaptation behaviors by using automatically generated paths; (4) both run-time overhead and reconfiguration time of SNS paths are negligible for most applications; (5) the resource management and allocation strategies allow effective setting up shared resource pools in the network and sharing resources among paths
关键词：Network; Bandwidth; Protocol; Communication Path; Reconfiguration; etc