Byung Yun Lee

End-to-End Network Performance Management Framework Based on Case-Based Reasoning

In the high-throughput scientific applications or researches, the end-to-end high performance data transferring is a critical issue in network and end-systems. If the performance of data transfer were not guaranteed, their researches couldnt achieve successful results and even more the researches couldnt start to do. In order to cope with the complex fault of the end-to-end transmission performance, we proposed the end-to-end network performance management framework based on case-based reasoning with the case library and multi-agent integrated with perfSONAR. We validated the case retrieving process with similarity measure and the real case that results from the performance degradation in the campus backbone segment.

Fault localization in NFV framework

Network function virtualization is quickly gaining acceptance as the new approach to delivering communication services. The promises of greater flexibility and dramatically reduced time to introduce new services coupled with the cost advantages, are driving communications service providers(CSP) around the world to begin deploying NFV-based services. But NFV service is actually operated based on virtualization environment, it has greater impact on disability virtual resources, when the physical devices had a fault. In this paper, when physical faults occurred in the NFV Framework, or logical failure occurs on a specific logical device, we will present a structure for Fault Localization method to ensure the continuity of service in NFVI.

The architecture of generic VNFM using TOSCA

Network function virtualization is quickly gaining acceptance as the new approach to delivering communication services. The promises of greater flexibility and dramatically reduced time to introduce new services coupled with the cost advantages, are driving communications service providers(CSP) around the world to begin deploying NFV-based services. An NFV operation system is divided into the NFV Orchestrator (NFVo), VNF Manager (VNFM), and VIM (Virtual Infrastructure Manager) subsystems in accordance with the ETSI standard, and the VNFM is defined as the system provided by the VNF manufacturer. In this paper, we present a generic VNF management system for administration and operation of the NVF” under the following structure and to specify the Or-Vnfm, Ve-Vnfm and Vi-Vnfm interfaces, with the goal of developing a generic and scalable VNFM to support various VNFs.

Analysis the architecture of VNFM (Virtual network function manager)

Network function virtualization is quickly gaining acceptance as the new approach to delivering communication services. The promises of greater flexibility and dramatically reduced time to introduce new services coupled with the cost advantages, are driving communications service providers(CSP) around the world to begin deploying NFV-based services. ETSI ISG has created the industry standards required in a short time to target specific technology areas that industry requires, and many global venders are developing VNFM for managing VNF. In this paper, we examine the standardization trends and areas of development trends, and presents the most basic operation of the initialization procedure for performing the steps of VNFM.