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A network resource reservation method, PCE and SDN network system

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

Active Publication Date: 2022-03-11
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A network resource reservation method, PCE and SDN network system
  • A network resource reservation method, PCE and SDN network system
  • A 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 an SDN network system, and relates to the communication field, wherein the method comprises: the PCE calculates a forwarding path for service data based on a traffic scheduling strategy; Sending resource reservation information, the resource reservation information includes: service data label information, bandwidth reservation information corresponding to the label information; the routing node sets reserved resources for service data forwarding according to the resource reservation information. The method, PCE and SDN network of the present invention, on the basis of global optimization path calculation, reserve the link bandwidth of the passing node in advance, reduce the frequent recalculation of PCE caused by subsequent traffic changes, and improve the performance of the SDN controller; Extensible with the existing PCEP protocol, it is easy to implement; it can realize centralized traffic scheduling in a complex network environment, and can improve the traffic scheduling and optimization capabilities of operators in the network.

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 Patents(China)
IPC IPC(8): H04L47/724H04L47/10
CPCH04L47/10H04L47/724
Inventor 王爱俊
Owner CHINA TELECOM CORP LTD
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