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Performance Evaluation of Centralized In-Network Caching and Content Visibility in Information Centric Network Over SDN/OpenFlow

机译:SDN / OpenFlow信息中心网络中集中式网络内缓存的性能评估和内容可见性

摘要

Performance is the main issue that we must consider as the key point in order to design Information Centric Network architecture (ICN). Cooperative in-network caching and ability of network\u27s nodes to see the contents in network will improve performance of ICN. In centralized network, the controller plays very important role in order to enable ICN nodes to do cooperative caching. Also, it has ability to see contents partially or globally according to our configuration. This paper aims to observe and compare the performance of ICN when we apply different levels of cooperative in-network caching and content visibility based on centralized control by using SDN/OpenFlow concept. We will evaluate performance of ICN by using three mechanisms; firstly, non-cooperative in-network caching with individual visibility; secondly, path cooperative in-network caching with path content visibility; and finally, global cooperative in-network caching with global content visibility. Our emulation result shows that global cooperative in-network caching with global content visibility mechanism gives better performance for ICN in terms of average number of hops to reach the content and number of requests hit server.
机译:性能是设计信息中心网络体系结构(ICN)时必须考虑的主要问题。协作式网络内缓存和网络节点查看网络中内容的能力将提高ICN的性能。在集中式网络中,控制器起着非常重要的作用,以使ICN节点能够进行协作缓存。而且,它具有根据我们的配置部分或全局查看内容的能力。本文旨在观察和比较使用SDN / OpenFlow概念在基于集中控制的不同级别的网络内协作缓存和内容可见性应用不同级别的ICN时的性能。我们将通过三种机制评估ICN的性能;首先,具有个人可见性的非合作式网络内缓存;其次,具有路径内容可见性的路径协同网络内缓存。最后,具有全局内容可见性的全局协作式网络内缓存。我们的仿真结果表明,具有全局内容可见性机制的全局协作式网络内缓存在到达内容的平均跳数和命中服务器的请求数方面为ICN提供了更好的性能。

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