물리적 구조에 따른 가상네트워크의 서바이벌특성 분석
Survivability Analysis of Virtual Network According to Physical Structure
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초록
최근에는 네트워크의 물리적 기술개발보다는 가상네트워크를 이용하는 SDN 의 활용에 관심이 집중되고 있는 추세이다. 즉 가상네트워크는 기존의 물리적 자원을 활용하여 소프트웨어적인 네트워크를 구성하게 된다. 이때 용도에 맞게 구축하기 위해서는 최소한의 물리적 네트워크자원이 지원되어야 한다는 것이다. 본 논문에서는 용도에 따른 가상네트워크의 통신수요를 정확하게 사전조사 할 수 있다는 가정 하에 기존 PIP만을 이용하여 가상네트워크의 서바이벌특성을 구현하는 것과 물리적 연결(링크추가 )의 추가적인 자원 활용을 이용하여 구현하는 것 모두를 포함하여 그 효율성을 비교분석하였다. 여기서 효율성은 서바이벌특성의 적용범위와 비용에 대한 것이 된다.
Abstract
In recent years, there is a growing interest in using SDN, which uses virtual networks, rather than developing physical technologies of networks. In other words, the virtual network utilizes existing physical resources to construct a software network. In this case, the minimum physical network resources must be supported in order to be used for the purpose. When using the resources provided by the PIP, if there is no physical connection or if the capacity is insufficient, it may not provide the desired performance. In this paper, we assume that survivability of a virtual network are implemented using only existing PIPs and that additional resources utilization of physical connection (link addition) is utilized The efficiency of each of them was compared and analyzed. The efficiency here is about the coverage and cost of survivability. That is, it analyzes the survivability of the virtual network according to the physical structure of the network. When the number of virtual networks is small, survivability is greatly influenced by the physical network structure. However, as the number of virtual networks increases, it is confirmed that survivability is not significantly influenced by the physical network structure.
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