OpenFlow KOREN Testbed구축을 위한 NetFPGA 기반 Capsulator 구현 및 성능평가

다국어 초록 (Multilingual Abstract)

Current TCP/IP-based Internet architecture has been used for over 30 years, however it will confront with fundamental problems due to new protocol extension limitation since communication environments will change drastically and various user requirements will be emerging in near future. To solve these problems, major countries have started Future Internet researches based on clean slate approach and they will deploy large-scale testbed to experiment and verify new functions. OpenFlow switch technology has been proposed as a new experimental technology for independent protocol that can utilized the legacy network devices and does not interfere with the production Internet traffic. Korea also started Future Internet testbed project called FIRST and OpenFlow switch with NetFPGA card will be used to deploy this testbed. To interconnect distributed testbed using OpenFlow switches, logical tunnel should be established by encapsulating MAC frame inside a unicast IP packet between OpenFlow switches because OpenFlow switches are not directly connected. In this paper, we have implemented a NetFPGA-based that performs MAC in IP tunneling between various OpenFlow switch sites implemented in domestic research network KOREN. The performance evaluation shows that the NetFPGA-based capsulator reveals better performance than the software-based tunneling and it can be utilized as a testbed for experimentation of Future Internet technologies.

목차 (Table of Contents)

• 제 1 장 서 론 1
• 1.1 연구목적 및 필요성 1
• 1.2 논문의 구성 3
• 제 2 장 관련연구 4
• 2.1 오픈플로우 4
• 2.2 NETFPGA 7
• 2.3 NETFPGA기반 오픈 플로우 스위치 16
• 제 3 장 오픈 플로우 테스트베드 19
• 3.1 FIRST 프로젝트 19
• 3.2 KOREN 22
• 3.3 KREONET 23
• 3.4. 오픈 플로우 TESTBED 구성도 24
• 제 4 장 소프트웨어 기반 캡슐레이터 26
• 4.1 캡슐레이터 설계 26
• 4.2 소프트웨어 기반 캡슐레이터 구현 및 테스트 27
• 제 5 장 NETFPGA기반 캡슐레이터 31
• 5.1 NETFPGA 기반 캡슐레이터 구현 31
• 5.1.1 Encapsulation 모듈 31
• 5.1.2 Decapsulation 모듈 36
• 5.1.3 User data path 모듈 40
• 5.2 NETFPGA 기반 캡슐레이터 성능 평가 42
• 제 6 장 향후연구 46
• 6.1 브릿지 모듈 구현 46
• 6.2 오픈플로우 + 캡슐레이터 모듈 구현 48
• 제 7 장 결 론 50