Ethernet broadcast optimization processing method based on sdn controller

Abstract

An Ethernet broadcast optimization processing method based on an SDN controller. When a terminal accesses the network, it broadcasts a GARP or DHCP request message to announce its own IP address or request an IP address; the SDN controller analyzes the packet-in message of the switch in real time, Extract the terminal information and perform terminal access processing: store the information mapping relationship between the terminal and the switch in the form of key-value; construct an ARP response packet for the ARP request message communicated by the terminal, encapsulate it into a packet-out message and send it back to the terminal . Perform loop avoidance processing at the same time: query the node information dictionary according to the key and value mapping relationship extracted from the broadcast message, ensure that the broadcast message received by the same switch has only one access port, and discard access ports from other different switches The same broadcast packets are used to avoid the flooding of broadcast packets triggered by the formation of broadcast loops in the network. The invention reduces the burden and resource waste of network controllers, switches and terminals, and avoids broadcast message forwarding loops.

Description

technical field [0001] The invention relates to an optimized processing method for improving Ethernet broadcasting, more precisely, relates to an SDN controller-based optimized processing method for Ethernet broadcasting, and belongs to the technical field of computer network communication. Background technique [0002] The network technology in today's world is changing with each passing day. The traditional Internet based on transmission control protocol TCP / Internet Protocol IP (Transmission Control Protocol / Internet Protocol) and other technologies is encountering more and more problems in service quality experience, service deployment, and service adaptation. problems and challenges. The Software Defined Network (SDN) proposed by Stanford University has gradually become an important technical direction for the development of the next generation Internet, and has attracted extensive attention from academia and industry. [0003] The SDN network mainly includes two parts...

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Problems solved by technology

[0022] As we all know, the shortcomings of the traditional STP operation method to solve the loop are as follows: the traffic pressure near the root bridge node is too large, the resources of the redundant links in the network are wasted, and the speed transmission brings a certain bottleneck

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