SDARP:基于软件定义网络的地址解析协议代理机制

SDARP: software-defined address resolution proxy mechanism

针对以太网中主机之间存在大量的地址解析协议(ARP)的广播流量,导致以太网规模受限问题的研究,提出基于软件定义网络的地址解析协议代理机制(SDARP)。利用软件定义网络范式,集中处理地址解析协议报文,应答地址解析请求,从而抑制广播流量。SDARP基于RYU控制器实现。基于Mininet仿真器的虚拟实验床实验证明,SDARP对主机透明,能够有效减少92.9%的ARP广播报文,消除广播风暴,并减少35.9%的ICMP传输时间。

The tremendous address resolution protocol（ ARP） broadcast traffic among massive hosts limits the scale of Ethernet. To solve this problem,this paper proposed SDARP,a software-defined address resolution proxy mechanism,to suppress broadcast traffic by centrally processing all ARP packets by using software-defined network paradigm. SDARP was a SDN application. SDARP implemented based on the open-source SDN controller RYU,and experiments were conducted on the Mininetbased virtual testbed. The emulation results demonstrate that SDARP is transparent to hosts,effectively reduces ARP traffic to92. 9%,eliminates the broadcast storm and reduces the response time of the Internet control message protocol to 35. 9%.