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Method and device for determining network topology, centralized network state information storage device

A centralized network and storage device technology, which is applied in the field of centralized network state information storage devices, can solve the problems of being unable to identify and utilize, and cannot determine the topology of OpenFlow networks and non-OpenFlow networks, and achieve good versatility

Active Publication Date: 2019-05-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since this method is implemented by adding a new VIEW-REFRESH message, and the relevant regulations of the VIEW-REFRESH message have not been standardized, devices that currently support the standard format of the Border Gateway Protocol cannot recognize and use this message, and this method is only applicable to a single Determination of the network topology in an OpenFlow network or a management domain with only multiple OpenFlow networks, it is impossible to determine the network topology in a management domain where an OpenFlow network and a non-OpenFlow network coexist

Method used

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  • Method and device for determining network topology, centralized network state information storage device
  • Method and device for determining network topology, centralized network state information storage device
  • Method and device for determining network topology, centralized network state information storage device

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Embodiment 1

[0065] An embodiment of the present invention provides a network topology determination method, which can be executed by a first centralized network state information storage device, see figure 1 , the method includes:

[0066] Step 101: Obtain first network state information, the first network state information includes device information of the first switching device, link information between the first switching devices, device information of the second switching device connected to the first switching device, And the link information between the first switching device and the second switching devices connected to each other, the first switching device is a switching device controlled or associated with the first centralized network state information storage device, and the second switching device is not the first centralized A network state information storage device controls or is associated with a switching device.

[0067] Step 102: Receive the second network state info...

Embodiment 2

[0074] In order to better understand the technical solution provided by Embodiment 2 of the present invention, the following first combines figure 2 A brief introduction is made to the application scenario of the second embodiment (that is, a management domain includes OpenFlow networks and non-OpenFlow networks). figure 2 shows the network architecture of an administrative domain, see figure 2 , the management domain includes three networks: network 1, traditional IP network 2, and OpenFlow network 3 enabled by the Path Computation Element communication Protocol (Path Computation Element communication Protocol, referred to as "PCEP"). The PCEP-enabled network 1 and IP network 2 are the aforementioned non-OpenFlow networks. The TED 11 in the PCEP-enabled network 1, the Network Management System (NMS for short) 21 in the IP network 2, and the OpenFlow controller 31 in the OpenFlow network 3 can communicate with each other, wherein the TED 11, Both the NMS 21 and the OpenFl...

Embodiment 3

[0135] In order to better understand the technical solution provided by Embodiment 3 of the present invention, the following first combines Figure 4 For the application scenario of Embodiment 2 (that is, the scenario where multiple OpenFlow networks are included in one management domain). Figure 4 shows the network architecture of an administrative domain, see Figure 4 , in this management domain, there are three OpenFlow networks 1, 2, 3, each OpenFlow network is equipped with an OpenFlow controller 11, 21, 31, and each OpenFlow network implements OpenFlow with other networks through its own OpenFlow controller Communication between controllers.

[0136] In this embodiment, the first centralized network state information storage device and the second centralized network state information storage device are OpenFlow controllers in different networks in the same management domain, that is, the first centralized network state information storage device is The first OpenFlow...

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Abstract

The invention discloses a network topology determination method and device, and a centralized network state information storage device, belonging to the technical field of communication. The method includes: acquiring first network state information, the first network state information includes device information of the first switching device and link information between them, and non-first centralized network state information storage connected to the first switching device The device information of the second switching device controlled by the device, and the link information between the first switching device and the respective connected second switching devices; receiving the second network state information sent by the second centralized network state information storage device ; According to the first network state information and the second network state information, determine the management domain or the network topology of the autonomous system to which the first centralized network state information storage device belongs. The invention is beneficial to the unified scheduling of resources among different devices by determining the network topology in the same management domain or autonomous system.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for determining network topology, and a centralized network state information storage device. 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. The communication equipment of the OpenFlow network mainly includes an OpenFlow Switch (OpenFlow Switch, "OFS" for short) for data forwarding and an OpenFlow Controller (OpenFlow Controller, "OFC" for short) for logically centralized control of the entire network. In the Internet, an autonomous system (Autonomous System, AS) is a small unit that has the right to independently decide which routing protocol should be used in the system. This network unit can be a simple network or a network group controlled by one or more ordinary network administrators. It i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
CPCH04L41/042H04L41/0226H04L41/12H04L41/342H04L43/0805
Inventor 郑秀丽
Owner HUAWEI TECH CO LTD
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