Ethernet broadcast optimization processing method based on SDN controller

Abstract

The invention discloses an Ethernet broadcast optimization processing method based on an SDN controller. When a terminal is accessed to a network, a GARP or DHCP request message is broadcast, and an IP address is declared or requested; the SDN controller analyzes in real time a packet-in message of a switch, extracts terminal information and executes terminal access processing: an information mapping relation between the terminal and the switch is stored in a key-value form; and an ARP response packet is constructed for an ARP request message for communication of the terminal, and the ARP response packet is packaged into a packet-out message as a response for transmitting back to the terminal. At the same time, loop avoiding processing is executed: according to a key-value mapping relation extracted from a broadcast message, a node information dictionary is queried, it is ensured that a broadcast message received by the same switch only has one access port, at the same time, the same broadcast messages from access ports of other different switches are abandoned, and thus a broadcast message flood triggered by formation of a broadcast loop in a network is prevented. The method provided by the invention reduces the burdens of the network controller, the switch and the terminal and waste of resources and avoids a broadcast message forwarding loop.

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 has encountered more and more problems and challenges in many aspects such as service quality experience, business deployment, and business adaptation. . The software-defined network SDN (Software Defined Network) 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] T...

AI Technical Summary

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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