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A network convergence method for SDN link failure based on sub-topology network

A link failure and network convergence technology, applied in the field of network communication, can solve problems such as non-existence, and achieve fast and effective convergence

Active Publication Date: 2022-05-27
ZHEJIANG GONGSHANG UNIVERSITY
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Problems solved by technology

Although SDN has architectural advantages for network convergence, there is currently no SDN network protocol or convergence solution that is widely accepted by the industry to specifically address the needs of SDN network convergence and take advantage of the SDN architecture. Therefore, the convergence problem for SDN networks has always been is a hotspot of industry research

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  • A network convergence method for SDN link failure based on sub-topology network
  • A network convergence method for SDN link failure based on sub-topology network
  • A network convergence method for SDN link failure based on sub-topology network

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Embodiment Construction

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Aiming at the existing passive fault recovery, the present invention proposes a network convergence method for SDN link failure in a sub-topology network, which utilizes the forwarding control separation of the SDN architecture, and selects some switches in the network topology through centralized control of the SDN switches to form a network topology. Zhang sub-topology network mechanism. Using this sub-topology, the remaining bandwidth of the network is used to support the synchronous convergence operation of multiple flows, so as to speed up the route convergence process and reduce the number of network flow tables.

[0033] like figure 1 As shown, the present invention provides a sub-topology network SDN link failure network convergence method, the method includes the following content:

[0034] Step 1: Build a network t...

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Abstract

The invention discloses a network convergence method for SDN link faults based on a sub-topology network. After the SDN controller obtains the global information and faults of the network, the method uses the remaining link bandwidth of the current network to plan a network topology embedded in the network. Subtopological network. This subtopological network consists of several hub nodes and paths between hub nodes. Non-hub nodes enter and exit the sub-network through attached hub nodes. The method of the present invention supports synchronous convergence operation of multiple streams by establishing a subnetwork for fault convergence, reduces the network topology size of the operation, effectively reduces the number of additions and deletions of flow tables, and at the same time can ensure the quality of the transfer path and shorten the convergence time. By making full use of the advantages of SDN and sub-topology network architecture, a link failure recovery method is provided.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a network convergence method for SDN link failure based on a sub-topology network. Background technique [0002] Software-Defined Networking (SDN) is a new innovative network architecture proposed by the CLean State research group of Stanford University. It can define and control the network through software programming. Its control plane and forwarding plane are separated and open and programmable. It is considered to be a revolution in the field of networking. SDN greatly simplifies network management and promotes innovation and development. Its main idea is to enable software developers to rely on network resources as easily as storage and computing resources. In an SDN network, network intelligence is logically concentrated on a software-based controller (control plane), and network devices become simple packet forwarding devices (data plane), which can be prog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/28H04L45/48
CPCH04L45/28H04L45/48
Inventor 李传煌王峥陈泱婷方春涛
Owner ZHEJIANG GONGSHANG UNIVERSITY
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