Load balancing implementation system and method based on SDN

Abstract

The technical scheme of the invention includes a load balancing implementation system and method based on an SDN. The system comprises a terminal, a controller, a switch and a plurality of back end servers and is used for generating a message of allocating the service of the terminal to the back end servers at the arrival of load balancing, wherein the message comprises a terminal IP and a virtualIP address, as well as a data packet for service processing; generating a flow table that can be identified by the switch and sending the flow table to the switch; modifying the virtual IP address according to preset rules of the flow table, receiving the data packets sent by the back end servers and restoring the IP address; receiving the data packets sent by the switch, performing correspondingservice operations and generating the corresponding data packets, wherein the data packets comprise messages. The load balancing implementation system and method have the beneficial effects that theload balancing of the link level is realized, compared with the traditional proxy level load balancing, the forwarding performance of the load balancing is greatly improved, and the rules of the flowtable are dynamically modified to achieve flexible customization of the network.

Description

technical field [0001] The invention relates to an SDN-based load balancing realization system and method, belonging to the field of computer data processing. Background technique [0002] Load Balance (LB for short) is a clustering technology of servers or network devices. Load balancing distributes specific services (network services, network traffic, etc.) to multiple servers or network devices, thereby improving service processing capabilities and ensuring high availability of services. [0003] For example: A certain system has 70 million transactions per day, and a single server can only handle 50 million transactions at full load, and a single server cannot handle such a large transaction volume at all. At this point, you can add another server with the same processing capacity, distribute all the business to these two servers, and let them handle part of it separately. The load balancing technology just solves how to distribute the business to two or more servers. ...

AI Technical Summary

Problems solved by technology

[0004] At present, the way to achieve load balancing is mainly realized through the full proxy. To achieve load balancing through the full proxy, the client needs to establish a connection with the full proxy, and the proxy establishes a connection with the back-end server. Two connections need to be established, which greatly reduces the load balancing performance

Images