Performance Analysis for Multiplicity Configuration to improve Xen-based Virtual Routers forwarding Performance

• Main Authors: Chun-tang Wang, 王俊棠
• Other Authors: Li-Ming Tseng
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/54037584166294283439

碩士 === 國立中央大學 === 資訊工程研究所 === 99 === Due to the recent development of cloud computing, cloud services providers have launched their own services. When you hire a large number of machines in the cloud must be linked through a router, and provides user settings, and configure their own network topology. With virtualization technology growing, router has gradually toward virtualization, but the performance of virtual router has been a research projects. We analyzed that packets have been received from the physical network card on Xen platform; we find that Xen utilize virtual bridge to determine packet belong to which virtual router that running on DomU and to do forwarding action. Experiments and other studies are found when Dom0 as a router, its performance higher than DomU, because packets will not be passed between the Dom0 and DomU and made additional time-consuming operation within Xen. In this paper, we tried to do forwarding by Dom0’s virtual bridge learning routing information allow the following packets flow directly forwarding. This paper presents to modify virtual bridge source code that similar to the label switch could quickly determine whether the same packets flow or not. This making the packet could directly bypass virtual router and forwarding by virtual bridge, therefore substantial increase the virtual router forwarding performance, and can provide QoS for virtual router.