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发明公开
CN110401733A 一种SDN网络的ARP协议实现方法、系统及控制器 无效 - 驳回

一种SDN网络的ARP协议实现方法、系统及控制器
摘要：
本发明公开了一种SDN网络的ARP协议实现方法、系统及控制器，所述方法包括：步骤1)如果接收到的ARP数据包为ARP请求数据包，进入步骤2)，如果ARP数据包为ARP响应数据包，进入步骤5)；步骤2)获取ARP请求数据包中的源主机信息，若网络拓扑表内包含ARP请求中的目的主机，进入步骤3)，否则，进入步骤4)；步骤3)根据节点信息表中该目的主机的MAC地址构造ARP响应数据包；通过packet_out令边缘交换机在源主机端口转发ARP响应数据包；步骤4)通过packet_out令所有可能连接源主机的交换机在非交换机连接端口泛洪ARP请求数据包；步骤5)获取ARP响应数据包中源主机信息，将此ARP响应包通过packet_out的方式下发给源主机连接的边缘交换机，令其在连接源主机的端口转发此ARP响应包。
摘要（英）：

The invention discloses an ARP (Address Resolution Protocol) implementation method and system of an SDN (Software Defined Network) and a controller, and the method comprises the following steps: step1) if a received ARP data packet is an ARP request data packet, entering step 2), and if the ARP data packet is an ARP response data packet, entering step 5); 2) acquiring source host information in the ARP request data packet, if the network topology table contains a destination host in the ARP request, entering a step 3), otherwise, entering a step 4); 3) constructing an ARP response data packetaccording to the MAC address of the destination host in the node information table; enabling the edge switch to forward the ARP response data packet at the port of the source host through the packet_ out; 4) enabling all the switches which are possibly connected with the source host to flood the ARP request data packet at the non-switch connection port through the packet _ out; and 5) acquiringsource host information in the ARP response data packet, and issuing the ARP response packet to an edge switch connected with the source host in a packet _ out manner, so that the edge switch forwardsthe ARP response packet at a port connected with the source host.

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