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End-to-end path control and data transmission methods, openflow controllers and switches

A path control and switch technology, applied in the field of communication, can solve the problems that the OpenFlow controller cannot be controlled, the quality of service cannot be guaranteed, and the QoS cannot be guaranteed.

Inactive Publication Date: 2019-02-05
HANGZHOU HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the OpenFlow controller cannot control the link in the IP network according to the real-time status of the link, it cannot uniformly control the end-to-end path, and the best-effort service in the IP network cannot guarantee QoS, so the entire end-to-end The path to the end cannot guarantee the quality of service (Quality of Service, referred to as "QoS")

Method used

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  • End-to-end path control and data transmission methods, openflow controllers and switches
  • End-to-end path control and data transmission methods, openflow controllers and switches
  • End-to-end path control and data transmission methods, openflow controllers and switches

Examples

Experimental program
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Embodiment 1

[0071] An embodiment of the present invention provides an end-to-end path control method, which is executed by an OpenFlow controller, see figure 1 , the method includes:

[0072] Step 101: the OpenFlow controller obtains the network topology and network status information of the management domain or autonomous system, the management domain includes the OpenFlow network and the IP network to which the OpenFlow controller belongs, the OpenFlow network includes multiple OpenFlow switches, and the IP network includes multiple switching devices, The autonomous system includes an OpenFlow controller, multiple OpenFlow switches controlled by the OpenFlow controller, and multiple switching devices controlled by non-OpenFlow controllers.

[0073] Step 102: Determine the source address and destination address of the data packet to be transmitted.

[0074] Step 103: Determine the path from the source address to the destination address according to the network topology and network state...

Embodiment 2

[0082] The embodiment of the present invention provides an end-to-end data transmission method, which is executed by an OpenFlow switch, and is suitable for data transmission in a management domain or an autonomous system, where the management domain includes an OpenFlow network and an IP network, and the OpenFlow network includes an OpenFlow controller and multiple OpenFlow switches, the IP network includes multiple switching devices, the autonomous system includes an OpenFlow controller, multiple OpenFlow switches controlled by the OpenFlow controller, and multiple switching devices controlled by non-OpenFlow controllers, see figure 2 , the method includes:

[0083] Step 201: Receive a control message issued by the OpenFlow controller, the control message is used to instruct the first OpenFlow switch to set the destination address in the data packet to be transmitted as the address of the first switching device, and the first OpenFlow switch is a plurality of OpenFlow switch...

Embodiment 3

[0088] In order to better understand the technical solution provided by Embodiment 3 of the present invention, the following first combines image 3 The application scenario of the third embodiment (that is, a management domain includes an OpenFlow network and an IP network, the OpenFlow network includes an OpenFlow controller and multiple OpenFlow switches, and the IP network includes multiple routers (ie, multiple switching devices)) is briefly introduced . image 3 shows the network architecture of an administrative domain, see image 3 , the management domain includes a first OpenFlow network 1, an IP network 2 and a second OpenFlow network 3, and the first OpenFlow network 1 includes an OpenFlow controller 10, an OpenFlow switch 11 directly connected to a host (host) 4, located in the first OpenFlow network OpenFlow switch 12,13 at the edge of one side of 1, wherein, OpenFlow controller 11 is used for controlling OpenFlow switch 11,12,13; IP network 2 includes centralize...

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Abstract

The invention discloses an end-to-end path control and data transmission method, an OpenFlow controller and a switch, and belongs to the technical field of communication. The path control method includes: the OpenFlow controller obtains the network topology and network status information of the management domain or the autonomous system; determines the source address and destination address and the path of the data packet to be transmitted; determines the first OpenFlow switch in the path, and sends The first OpenFlow switch sends a control message, and the control message is used to reset the destination address and source route in the data packet to be transmitted, and send the data packet from a designated port. The present invention realizes the control of the entire end-to-end path through the OpenFlow controller, which is beneficial to flexible and efficient scheduling of network resources of the entire network, and helps to realize QoS guarantee.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an end-to-end path control and data transmission method, an OpenFlow controller and a switch. Background technique [0002] With the continuous development of the software-defined network (Software Defined Network, "SDN") concept, the pace of development of the OpenFlow network is also accelerating. In a certain period of time, the OpenFlow network will coexist with the traditional IP network. A relatively common scenario is that in the same management domain (that is, multiple networks belonging to the same network operator), the Internet Protocol (Internet Protocol, "IP") network is used as the core network, and multiple OpenFlow networks are used as the access network. The network is interconnected with the IP network. Then, how to schedule network resources in the management domain, create and control end-to-end (that is, between hosts and hosts) paths has become an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/927H04L12/721H04L47/80
Inventor 郑秀丽
Owner HANGZHOU HUAWEI DIGITAL TECH
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