Method for standardized data surface dynamic reconstruction for multiple services

Abstract

The invention discloses a method for standardized data surface dynamic reconstruction for multiple services. In a software definition network with a plurality of controllers, a topological structure of the network can be dynamically configured through the method, wherein the topological structure comprises parameters of the number of nodes, the link connection relationship, the link weight with the bandwidth or the delay serving as a measurement indicator and the like so that the network structure can be flexibly changed and network resources can be adjusted in real time; when the network is blocked or the nodes are collapsed and a link breaks down, an operator can actively intervene so that load can be balanced and the link can be switched. Compared with the prior art, a flow table can be configured in real time through the method according to the requirement, a specific protocol is not depended, and the manageability and the flexibility are higher. A unified reconstruction interface is applied to the method for standardized reconstruction so that different transmitting strategies can be adopted by a bottom-layer network according to the specific services, and the services can be borne on the upper layer. The method for standardized data surface dynamic reconstruction for the multiple services is good in safety and capable of avoiding the potential safety hazards caused by reconstruction.

Description

technical field [0001] The invention relates to the technical field of software-defined networks, in particular to a method for dynamically reconfiguring a standardized data plane for multiple services. Background technique [0002] In the real Internet, network operators often need to adjust the topology of the network for various reasons, including parameters such as the number of nodes, link connection relationships, and link weights measured by bandwidth or delay. After topology changes, switches deployed in the network need to update their forwarding tables to adapt to these changes, otherwise packets will not be forwarded correctly. Network topology changes trigger many switches to update forwarding tables, which is called data plane reconfiguration of the network. [0003] When the intra-domain topology of a traditional network changes, its data plane will be reconfigured according to a link state protocol such as OSPF. The process mainly includes: all routers use t...

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Problems solved by technology

[0006] 1. Reconfiguration depends on specific protocols (such as OSPF reconstruction, BGP reconstruction), poor manageability and flexibility

[0007] 2. The forwarding table of the traditional network is calculated by the routing algorithm stipulated in the protocol, and cannot be configured by the network service, that is, the service cannot customize the forwarding strategy, which limits the function of the network

[0008] 3. There are security loopholes in the traditional network reconstruction process (for example, after the topology is changed, the firewall is not updated in time, and the security protection is still carried out according to the original topology, so there are hidden dangers)

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