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Construction of Test Environments based on Information Extracted from Test Plan and IUT
Dong Hun Song, Yongjin Seo, Hyeon Soo Kim, Nak-Jung Choi, YoungKeun Go, Chumsu Kim
http://doi.org/10.5626/JOK.2019.46.11.1122
Software testing is a way to increase the reliability of software thereby resulting in a probable enhancement in the quality of the software by increasing the number of systematic tests performed. However, in reality, the resources allocated to the test are limited, and there are difficulties that require expertise in the construction of the test environment, or that the test execution environment is constrained. In this paper, we have defined the components needed to construct the test environment and a method for deriving them from the test plan and the IUT to be tested. Also, we have proposed a construction procedure for realizing the test environment in the virtual environment by combining these components. This method could contribute towards improvement in the reliability of the software by allowing user to concentrate on conducting tests rather than making efforts to build the test environment, as the test environment can simply be provided by preparing IUTs and test plans.
LISP based IP Address Virtualization Technique for Resource Utilization on Virtualized SDN
Youngkeun Go, Gyeongsik Yang, Bong-yeol Yu, Chuck Yoo
Network virtualization is a technique that abstracts the physical network to provide multiple virtual networks to users. Virtualized network has the advantage to offer flexible services and improve resource utilization. In SDN architecture, network hypervisor serves to virtualize the network through address virtualization, topology virtualization and policy virtualization. Among them, address virtualization refers to the technique that provides an independent address space for each virtual network. Previous work divided the physical address space, and assigned an individual division to each virtual network. Each virtual address is then mapped one-to-one to a physical address. However, this approach requires a lot of flow entries, thus making it disadvantageous. Since SDN switches use TCAM (Ternary Contents Addressable Memory) for the flow table, it is very important to reduce the number of flow entries in the aspect of cost and scalability. In this paper, we propose a LISP based address virtualization, which separates address spaces for the physical and virtual addresses and transmits packet through tunneling, in order to resolve the limitation of the previous studies. By implementing a prototype, we show that the proposed scheme provides better scalability.
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