標題: Circuit-based logical layer 2 bridging in software-defined data center networking
作者: Wang, Yao-Chun
Lin, Ying-Dar
資訊工程學系
Department of Computer Science
關鍵字: cloud;datacenter;layer 2;multitenancy;network virtualization;OpenFlow;SDN
公開日期: 1-Jan-1970
摘要: With the expansion of the size of data centers, software-defined networking (SDN) is becoming a trend for simplifying the data center network management with central and flexible flow control. To achieve L2 abstractions in a multitenant cloud, Open vSwitch (OVS) is commonly used to build overlay tunnels (eg, Virtual eXtensible Local Area Network [VXLAN]) on top of existing underlying networks. However, the poor VXLAN performance of OVS is of huge concern. Instead of solving the performance issues of OVS, in this paper, we proposed a circuit-based logical layer 2 bridging mechanism (CBL2), which builds label-switched circuits and performs data-plane multicasting in a software-defined leaf-spine fabric to achieve scalable L2 without overlay tunneling. Our evaluations indicate that direct transmission in OVS improves throughput performance by 58% compared with VXLAN tunneling, and data-plane multicasting for ARP reduces address resolution latency from 149 to 0.5 ms, compared with control-plane broadcast forwarding. The evaluation results also show that CBL2 provides 0.6, 0.4, and 11-ms protection switching time, respectively, in the presence of switch failure, link failure, and port shutdown in practical deployment.
URI: http://dx.doi.org/10.1002/dac.4128
http://hdl.handle.net/11536/152726
ISSN: 1074-5351
DOI: 10.1002/dac.4128
期刊: INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
起始頁: 0
結束頁: 0
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