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Network resource reservation method, PCE and SDN network system

A resource reservation and network resource technology, applied in the field of PCE and SDN network system, network resource reservation method, can solve difficult end-to-end business path bandwidth reservation and other problems, achieve easy implementation, improve performance, and improve traffic scheduling Effect

Active Publication Date: 2018-06-29
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the implementation of existing Segment Routing label forwarding does not rely on the traditional distributed RSVP protocol, it is difficult to realize end-to-end service path bandwidth reservation. device to form a greater pressure

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  • Network resource reservation method, PCE and SDN network system
  • Network resource reservation method, PCE and SDN network system
  • Network resource reservation method, PCE and SDN network system

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Embodiment Construction

[0028] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The technical solution of the present invention will be described in various aspects below in conjunction with various figures and embodiments.

[0029] figure 2 It is a schematic flowchart of an embodiment of the method for reserving network resources according to the present invention, su...

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Abstract

The invention discloses a network resource reservation method, a PCE and and SDN network system, and relates to the field of communication. The method comprises the steps as follows: the PCE computesa forwarding path of service data based on a flow scheduling strategy; the PCE issues resource reservation information to a routing node through which the forwarding path passes, wherein the resourcereservation information comprises label information of the service data and the bandwidth reservation information corresponding to the label information; and the routing node sets reservation resources for the forwarding of the service data according to the resource reservation information. According to the method, the PCE and the SDN network provided by the invention, on the basis of overall optimized path computing, the bandwidth of the link passing through the node is reserved in advance, the frequent repeated computation of the PCE caused by the variation of the subsequent flow is reduced,and the SDN controller performance is enhanced; expansion is performed based on the existing PCEP protocol, so as to be easy to implement; concentrated flow scheduling under the complex network environment can be achieved, and the flow scheduling and optimized capacity of the operator in the network can be enhanced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for reserving network resources, a PCE and an SDN network system. Background technique [0002] Under the SDN (Software Defined Network, software-defined network) network architecture, the request and calculation of the optimized path are generally implemented through the PCEP (Path Computation Element Protocol, Path Computation Element Protocol) protocol. Segment Routing is a source routing mechanism that will provide the network with the ability to quickly interact with upper-layer applications. Segment Routing is also based on label switching, but unlike MPLS networks that rely on LDP, RSVP and other external protocols to implement label distribution and TE functions, Segment Routing only simply extends the existing IGP protocol to implement TE. , FRR, MPLS VPN and other functions. Segment Routing transmits Labels for Node, Link and other network elements by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/913H04L12/801H04L47/724
CPCH04L47/10H04L47/724
Inventor 王爱俊
Owner CHINA TELECOM CORP LTD
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