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A traffic scheduling method, PCE and SDN network system

A traffic scheduling and traffic technology, applied in the field of communications, can solve problems such as global computing distortion and different service data forwarding paths, and achieve the effects of improving traffic scheduling, realizing centralized automatic adjustment, and ensuring real-time and accuracy.

Active Publication Date: 2021-03-05
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the PCE cannot obtain the traffic scheduling policy information configured on the routing node, the global calculation and optimization may be distorted during the global routing calculation and optimization, resulting in the fact that the forwarding path of the actual service data is different from the forwarding path calculated

Method used

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  • A traffic scheduling method, PCE and SDN network system
  • A traffic scheduling method, PCE and SDN network system
  • A traffic scheduling method, PCE and SDN network system

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Embodiment Construction

[0029] 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.

[0030] The "first", "second" and so on in the following are only used to describe the difference, and have no other special meanings.

[0031] fi...

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Abstract

The invention discloses a traffic scheduling method, a PCE and an SDN network system, and relates to the field of communication. The method comprises the following steps: the PCE receives a traffic scheduling policy uploaded by a routing node; the PCE calculates a forwarding path of service data according to the traffic scheduling policy; and the PCE sends the forwarding path information to all routing devices through which the forwarding path passes. In the method, the PCE and the SDN network system disclosed by the invention, the routing node uploads the traffic scheduling policy, the PCE calculates the forwarding path of the service data according to the traffic scheduling policy, and the traffic scheduling policy of the intra-domain nodes can be automatically reported, thereby reducingmanual intervention and ensuring the instantaneity and accuracy of global optimization, and centralized automatic adjustment of the traffic is achieved; the method is implemented based on the existing BGP-LS protocol and is easy to implement; and the consistency of the centralized scheduling, the simulation result and the actual forwarding behavior of the traffic can be ensured, and the traffic scheduling and optimization capabilities in the network can be improved.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a traffic scheduling method, PCE and SDN network system. Background technique [0002] Under the SDN (Software Defined Network, software-defined network) network architecture, PCE (PathComputation Elementation, Path Computation Element) is the implementer for implementing centralized calculation of optimized paths. At present, the BGP-LS protocol is used to transmit routing node and link information in the IGP domain to the PCE, mainly including Node, Prefix, Adjacent Link and other information. Based on routing node and link information, PCE can perform global route optimization path calculation. However, the routing node and link information currently reported through the BGP-LS protocol does not include the traffic scheduling policy information configured on each routing node, and the underlying network may have already stored the traffic scheduling policy info...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L12/801
CPCH04L45/38H04L47/10
Inventor 王爱俊
Owner CHINA TELECOM CORP LTD
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