Network acceleration method and apparatus based on SDN (Software Defined Network)

Abstract

The invention discloses a network acceleration method based on an SDN (Software Defined Network). The network acceleration method is applied to an SDN controller; the SDN controller is connected to an SDN forwarding device; the SDN forwarding device is accessed to a network to construct a direct connection chain and an acceleration chain; the direct connection chain is a chain on which the SDN forwarding device is directly accessed to the network; the acceleration chain is a chain on which the SDN forwarding device is accessed to the network via a tandem accelerator; the method comprises the steps of receiving configuration information input by a user; judging whether the configuration information includes high availability information of the accelerator; if yes, obtaining working state information of the accelerator; generating first control plane information according to the high availability information of the accelerator and the working state information of the accelerator; and importing a data stream to the accelerator according to the first control plane information. The invention further discloses a network acceleration apparatus based on the SDN. By implementing the above solutions, the flexible and differential acceleration service of the network is implemented, the bandwidth utilization rate is improved, and the availability of the network is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an SDN-based network acceleration method and device. Background technique [0002] SDN (Software Defined Network) is a new network innovation architecture. Its core technology, OpenFlow, separates the control plane of network equipment from the data plane, thereby realizing flexible control of network traffic, and providing core network and application Innovation provides a good platform. [0003] OpenFlow is a new network switching model, which supports users or programs to control network processing behavior through flow tables. The OpenFlow network realizes the separation of the data forwarding layer and the control layer. The switch in the OpenFlow network realizes the forwarding of the data layer, and the controller realizes the function of the control layer. The controller controls the SDN forwarding device (OpenFlow switch) through the OpenFlow protocol, so as to reali...

AI Technical Summary

Problems solved by technology

[0004] The network acceleration technology is to solve the problem of slow network speed caused by many reasons. Among them, "many reasons" refer to the following reasons: 1. Due to the uncertainty of the intermediate network, such as network delay, jitter and packet loss, etc. The connection-based (such as TCP connection) application transmission efficiency between hosts connected to both ends of the network is low, which directly leads to low network speed; 2. When a large number of users access a small number of service nodes, a small number of service nodes are dealing with a large number of services It cannot respond efficiently when requesting, and the uncertainty of the intermediate network, such as network delay, jitter and packet loss, will also cause problems similar to "1"

The commonly used network acceleration technology includes TCP proxy (TCP Proxy), CDN or the combination of the two, but the above-mentioned technology still has the following problems: 1. TCP Proxy is an acceleration function module inserted and connected in series on the network link, and TCP Proxy is easy to It becomes a traffic bottleneck, and once the Proxy fails, it will have a certain impact on the entire network; 2. It is difficult for multiple TCPProxies to achieve dynamic load balancing, automatic elastic expansion, and preparation for switching to improve the HA characteristics of the system; 3. Because not all All network connections need or can be accelerated, while traditional TCP Proxy technology is difficult to distinguish connections that need to be accelerated from those that are not needed; 4. The acceleration algorithm and parameters of Proxy are relatively fixed, and cannot dynamically follow the link situation and user QoS Need to adapt and differentiate

Images