A Novel Efficient SDN Based Broadcast Scheme

Abstract

Abstract-Data centers with millions of physical and virtual end hosts are now the basis for many Internet and cloud computing services. Hence, it is no longer practical to employ the traditional flooding method for the broadcast tasks in such large networks. In order to improve the efficiency of broadcasting among millions of hosts, we present a novel Software Defined Networking (SDN) based broadcast scheme in this paper. In most exsiting SDN technologies, the centralized Controller usually outputs messages to every port of all switches for broadcasting. However, in our scheme, a broadcast tree is previously created and corresponding instructions are installed into the switches as flow entries by the Controller. Hence, the Controller only needs to send a message to one switch, and then the informed switch will automatically spread the message to entire network along the broadcast tree. Therefore, the heavy broadcast task is transferred from the Controller to the distributed switches, which greatly alleviates the burden on the Controller and reduces the interactions between the Controller and switches. Moreover, a prototype is developed and the experimental results prove the good efficiency of the presented broadcast scheme.

Controller Based Proxy for Handling NDP in OpenFlow Network

“…However, the reactive method has been implemented in the IPv4 environment which aimed for decreasing the network load occurred from the Address Resolution Protocol (ARP) broadcasting. Generally, all of the former research including SEASDN [4], FSDM [5], SDARP [6], [7], [8], [9], [10], [11], [12], [13], and [14] intended to implement reactive based approach in SDN for handling ARP broadcasting by deploying an application that can store any information of the incoming ARP request into an ARP table that maps between MAC and IP (Internet Protocol) address. If there exists an information regarding to the ARP request, the controller will directly reply by sending an artificial ARP reply packet which has similar detail as the packet originated from the targeted host through an OFPT_PACKET_OUT message.…”