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Bandwidth guarantee method and apparatus in software defined network (SDN)

A software-defined network and bandwidth technology, which is applied in data exchange networks, electrical components, hybrid switch systems, etc., can solve problems such as providing bandwidth guarantees for special users, affecting user network experience, and unreasonable implementation methods

Inactive Publication Date: 2015-10-14
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The current implementation method has unreasonable places
First of all, after the Amy-OSPF routing protocol calculates the path of the traffic, it sends it to the device to guide the forwarding, and will not continue to track the size of the traffic. Once the traffic suddenly increases and exceeds the range of the bandwidth, some traffic will be lost. , In addition, in the data center, the traffic of the main server will not be able to provide bandwidth guarantee for special users in the case of a sudden increase in traffic, which will lead to a large number of packet loss and reconnection phenomena, which will double the deterioration of the entire network and greatly affect User's web experience

Method used

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  • Bandwidth guarantee method and apparatus in software defined network (SDN)
  • Bandwidth guarantee method and apparatus in software defined network (SDN)
  • Bandwidth guarantee method and apparatus in software defined network (SDN)

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Embodiment Construction

[0075] For the sake of clarity, at first the following terms appearing in the present invention are explained:

[0076] Packet-in: The SDN forwarding device encapsulates the received packet in a Packet-in packet, and sends the Packet-in packet to the SDN controller through the SDN control link, and the packet will indicate that the forwarding device has received The incoming port of the packet.

[0077] Packet-out: The SDN controller encapsulates the packet in a Packet-out packet, sends the Packet-out packet to the SDN forwarding device through the SDN control link, and informs the SDN forwarding device how to process the Packet-out packet through the packet. The packet encapsulated in the out packet.

[0078] image 3 The flow chart of the bandwidth guarantee method in SDN provided by an embodiment of the present invention, its specific steps are as follows:

[0079] Step 301: the controller in the SDN acquires the network topology of the SDN.

[0080] The specific implem...

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Abstract

A controller acquires a SDN topology structure and acquires a link bandwidth between each pair of connected forwarding devices in the SDN according to the acquired SDN topology structure. The controller reserves a bandwidth for a designated user device according to the acquired link bandwidth between each pair of connected forwarding devices.

Description

technical field [0001] The present invention relates to the technical field of Software Defined Network (SDN, Software Defined Network), in particular to a bandwidth guarantee method and device in SDN. Background technique [0002] The biggest difference between SDN and traditional networks is the separation of the control plane and the network forwarding plane. The network forwarding plane will no longer have control functions, and the control plane will be handed over to an operating system independent of the forwarding plane, and the features will be based on the operating system. Customize. [0003] OpenFlow (Open Flow) is a communication interface standard between the controller and the forwarding layer defined in the SDN architecture. OpenFlow allows direct access and manipulation of the forwarding plane of network devices, which may be physical or virtual. The OpenFlow protocol has been continuously developed. [0004] The idea of ​​OpenFlow is to separate the cont...

Claims

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Application Information

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IPC IPC(8): H04L12/911H04L29/08
CPCH04L12/6418
Inventor 王伟王海
Owner NEW H3C TECH CO LTD