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Method and system for expanding PCEP protocol to automatically create tunnel in SDN scene

A technology for automatic creation and tunneling, applied in transmission systems, digital transmission systems, data exchange networks, etc., to achieve automation and intelligence, and simplify network deployment.

Active Publication Date: 2020-06-05
PURPLE MOUNTAIN LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems existing in the above-mentioned prior art, the present invention provides automatic creation of SR-TE based on the service routing destination in the SDN scenario, and uses the SDN controller Calculating forwarding paths that meet business requirements for SR-TE tunnels can effectively solve the complex configuration and network adjustment difficulties currently encountered in the backbone network. Automatically created SR-TE tunnels and intelligent path algorithms can automatically match business needs. , so that business application drives network deployment and simplifies network deployment

Method used

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  • Method and system for expanding PCEP protocol to automatically create tunnel in SDN scene
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  • Method and system for expanding PCEP protocol to automatically create tunnel in SDN scene

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Embodiment 1

[0031] The present invention provides a method for automatically creating a tunnel by extending the PCEP protocol in an SDN scenario. The basic idea of ​​the method can be summarized as creating a tunnel based on a private network route in an SDN scenario, and extending the PCEP protocol so that the SDN controller can The color of the route is used to create different forwarding paths, which can meet the characteristic requirements of different services and allow the services to be carried on different tunnels; based on the next hop NextHop of the private network route and the color Color, the tunnel is automatically created, which simplifies the network configuration and realizes the network Automation and intelligence.

[0032] figure 1An example of the network topology structure for automatically creating tunnels is shown. As shown in the figure, an SDN controller is deployed on the IP backbone network, responsible for tunnel path calculation and network control; CE1 and CE...

Embodiment 2

[0044] The present invention also provides a system for automatically creating a tunnel by extending the PCEP protocol in an SDN scenario, and the system includes a forwarding device and an SDN controller that need to create a tunnel;

[0045] The forwarding device includes a first forwarding device and a second forwarding device, the first forwarding device is a tunnel source, and the second forwarding device is a tunnel destination; the second forwarding device sends a BGP private network routing request, and the first forwarding device receives the request, And analyze the private network routing information, and send it to the SDN controller;

[0046] The SDN controller receives the private network routing information sent by the first forwarding device, establishes a PCEP protocol with the first forwarding device, and after receiving the PCRep message, the first forwarding device analyzes the path information and automatically creates a tunnel.

[0047] image 3 ...

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Abstract

The invention provides a method and a system for expanding a PCEP protocol to automatically create a tunnel in an SDN scene. In SDN scenarios, SR-TE is automatically created based on a service routingdestination, different forwarding paths are created based on a cooler of a private network route, an SDN controller is adopted to calculate a forwarding path meeting the service requirements for theSR-TE tunnel. According to the method, the problems of complex configuration and network adjustment in the backbone network at present can be effectively solved, the service requirements can be automatically matched through the automatically created SR-TE tunnel and the intelligent path algorithm, the service application drives the network deployment, and the network deployment is simplified.

Description

technical field [0001] The invention belongs to the technical field of application in IP backbone network and 5G bearer network, and specifically relates to a method and system for dynamically creating tunnels by extending PCEP protocol in an SDN (Software Defined Network, software-defined network) scenario, and simplifying network deployment. Background technique [0002] In the cloud era where new services and new demands emerge in an endless stream, the IP backbone network serves as an indispensable bridge and link to connect various Internet services. In order to share business data between government enterprises and branches of cloud interconnection companies, each branch needs to be connected to the Internet , to share data under the premise of ensuring the security of data storage and transmission. In order to achieve this purpose, in addition to leased lines to realize interconnection between branches, an MPLS-based VPN (Virtual Private Network, virtual private netwo...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/46H04L12/715H04L12/741H04L12/911H04L45/74
CPCH04L41/12H04L47/825H04L12/4633H04L45/04H04L45/74
Inventor 石鸿伟雷华黄韬刘韵洁
Owner PURPLE MOUNTAIN LAB
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