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Software-defined network, nodes and path calculation method and device

A software-defined network and path calculation technology, applied in the field of communication, can solve the problem of paths that do not meet the actual traffic forwarding requirements, and achieve the effect of simple configuration

Inactive Publication Date: 2017-12-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a software-defined network, node, and path calculation method and device to solve the problem that the existing SDN network path calculation method cannot exclude paths that do not meet the actual traffic forwarding requirements

Method used

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  • Software-defined network, nodes and path calculation method and device
  • Software-defined network, nodes and path calculation method and device
  • Software-defined network, nodes and path calculation method and device

Examples

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no. 1 example

[0028] figure 2 It is a flow chart of the path calculation method provided in the first embodiment of the present invention, consisting of figure 2 It can be seen that, in this embodiment, the path calculation method provided by the present invention includes:

[0029] S101: Determine the candidate node of the next hop node according to the topology network;

[0030] S102: Obtain constraint parameters of each candidate node;

[0031] S103: Select the target node of the next hop node from the candidate nodes according to the constraint conditions and the constraint parameters of each candidate node.

[0032] In some embodiments, when there are multiple target nodes, the path calculation method in the above embodiments further includes:

[0033] Obtain the communication cost value of each target node;

[0034] The target nodes are sorted according to the communication cost value.

[0035] In some embodiments, before determining the candidate node, the path calculation met...

no. 2 example

[0043] image 3 It is a schematic structural diagram of the path calculation device provided in the second embodiment of the present invention, which is represented by image 3 It can be seen that, in this embodiment, the path calculation device provided by the present invention includes: a candidate node module 31 and a target node module 32, wherein,

[0044] The candidate node module 31 is used to determine the candidate nodes of the next hop node according to the topological network, and obtain the constraint parameters of each candidate node;

[0045] The target node module 32 is used to select the target node of the next hop node from the candidate nodes according to the constraint parameters of the current node, the constraint parameters and constraints of each candidate node, and write the reachable path set table.

[0046] In some embodiments, the target node module 32 in the above embodiment is also used to sort the target nodes according to the communication cost v...

no. 3 example

[0056] The present invention will be further explained in combination with specific application scenarios.

[0057] This embodiment takes the network hierarchy required by the existing operator network as a constraint parameter as an example, and provides a shortest path algorithm with hierarchy constraints. This method is simple to configure, can well meet various path calculation requirements, and is compatible with existing operators. network.

[0058] In this embodiment, the network forwarding device management module on the SDN controller is used to increase the device level information. When calculating the next hop in the path calculation module, the shortest next hop that meets the conditions is selected according to the device level information. In this way, the SDN controller mainly include:

[0059] Network forwarding device management module: When adding a device, add the network layer where the device is located (access device<aggregation device<core device). In ...

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Abstract

The embodiment of the invention provides a software-defined network, nodes and a path calculation method and device. The method comprises the steps that candidate nodes of a next-hop node are determined according to a topology network; constraint parameters of the candidate nodes are acquired; and target nodes of the next-hop node are selected from the candidate nodes according to constraint conditions and the constraint parameters of the candidate nodes. According to the method, the constraint conditions are introduced, the constraint conditions such as the network layers of the nodes can be set according to actual application to constrain path calculation, the condition that paths not according with original communication network node work are generated is avoided, configuration is easy, various path calculation requirements can be well met, existing operator networks are compatible, and the problem that in an existing SDN network path calculation method, paths not meeting the actual traffic forwarding requirement cannot be excluded is solved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a software-defined network, a node, and a path calculation method and device. Background technique [0002] SDN (software defined network, software defined network) improves the programmability of the network through a centralized controller, the separation of the control plane and the forwarding plane and the characteristics of open programmability have greatly promoted the development of the next generation Internet; For the current operator network, SDN can greatly reduce the complexity and flexibility of operation and maintenance, but there are many problems in the integration of the SDN network and the current operator network. [0003] Such as figure 1 The schematic diagram of the operation of the operator's network is shown. The operator's network includes the access layer, the aggregation layer, and the core layer. Each layer corresponds to different types of equipment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/707H04L12/721H04L12/751H04L45/24H04L45/02
CPCH04L45/02H04L45/123H04L45/24
Inventor 张从伟姚杰
Owner ZTE CORP
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