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: | 1-一月-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 |
顯示於類別: | 期刊論文 |