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A single link fault routing protection method based on hybrid SDN network

A single-link, failure technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as the inability to directly apply hybrid SDN networks, and achieve the effect of low overhead and path stretch.

Active Publication Date: 2021-11-19
SHANXI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, these solutions are all researched on the basis of traditional network architecture and SDN network architecture, and cannot be directly applied to hybrid SDN networks.

Method used

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  • A single link fault routing protection method based on hybrid SDN network
  • A single link fault routing protection method based on hybrid SDN network
  • A single link fault routing protection method based on hybrid SDN network

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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] refer to figure 1 , the present invention provides a single fault route protection method based on a hybrid SDN network, comprising:

[0029] Step 1: Calculate the set L={(s,d),s,d∈V} of all source-destination node pairs not protected by the LFC rule in the network, calculate the failure protection rate, if the failure protection rate is less than 1, execute Step 2, otherwise, end; the method of calculating the failsafe rate is as follows where V is the set of nodes in the topology,

[0030]

[0031] Step 2: According to the set L={(s,d),s,d∈V} calculated in step 1, for any source-destination node pair in the set (s,d)∈L, calculate the distance between each node pair For all SDN nodes D(s,d), the method of calcula...

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Abstract

The invention discloses a single-link fault routing protection method based on a hybrid SDN network, belongs to the technical field of the Internet, and solves the problem that LFC in a traditional network cannot cope with all possible single-link fault situations in the network. The present invention firstly calculates all the source-destination pairs not protected by the LFC rules; then deploys SDN nodes in the network to protect all the above-mentioned unprotected source-destination pairs, so that the method can deal with all possible single Failure situation. The method proposed by the present invention can not only deal with all single-link failures in the hybrid SDN network, but also has small running time and path stretching. Therefore, the present invention is an efficient route protection method that can be deployed in a hybrid SDN network.

Description

technical field [0001] The present invention relates to the technical field of route protection, and more specifically, to a single-link fault route protection method based on a hybrid SDN network. Background technique [0002] SDN is a new type of network architecture that has recently emerged. The biggest feature of this architecture is the decoupling of the functions of the control plane and the forwarding plane. The control plane consists of one or more SDN centralized controllers, responsible for path selection and routing decisions. The forwarding plane consists of SDN switches and is responsible for forwarding data flows in the network. The control plane and forwarding plane communicate through the standardized interface Openflow. The SDN centralized controller has a logical view of the entire network and controls the forwarding path of all data flows in the network. The controller sends the routing decision information to the SDN switch through Openflow, so as to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/733H04L45/28H04L45/122
CPCH04L45/28H04L45/122
Inventor 耿海军
Owner SHANXI UNIV
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