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Path acquisition method, path calculation unit, path calculation client and system

A path calculation unit and path calculation technology, applied in the field of communication, can solve the problems of inflexible route calculation method and limited network expansion, etc.

Active Publication Date: 2018-10-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a route acquisition method, a route calculation unit, a route calculation client and a system, which are used to solve the technical problem that the route calculation method in the prior art is inflexible and limits network expansion

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  • Path acquisition method, path calculation unit, path calculation client and system
  • Path acquisition method, path calculation unit, path calculation client and system
  • Path acquisition method, path calculation unit, path calculation client and system

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Embodiment Construction

[0062] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0063] refer to figure 1 , which is a PCE-based centralized path calculation and deployment networking structure diagram. When the PCC 10 needs to acquire path information, it sends a path computation request message (Path Computation Request, PCReq) to the PCE 20, where the PCReq is used to request a path that meets the PCC request. The PCE 20 returns a Path Computation Reply (PCRep) message to the PCC 10, where the PCRep contains the n...

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Abstract

The invention discloses a path request method. The method includes: a stateful path computation unit PCE receives a path computation request message sent by a path computation client PCC, the path computation request message includes first attribute information, and the second path computation request message includes: A piece of attribute information is used to specify the acquisition method of the path requested by the PCC; the Stateful PCE acquires path information that meets the PCC request according to the first attribute information; sends a path calculation response message to the PCC, and the The path computation response message includes the path information conforming to the PCC request. Embodiments of the present invention also provide a stateful path computation unit and a path computation client. The embodiment of the present invention is used to solve the technical problem that the routing technology method in the prior art is inflexible and limits the network expansion.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a path acquisition method, a path calculation unit (Path Computation Element, PCE), a path calculation client (Path Computation Client, PCC) and a system. Background technique [0002] PCE is a computing unit in a path computing architecture of a Multi-Protocol Label Switching (MPLS) network, which can implement centralized path computing based on various constraints. The PCC is used to initiate a path calculation request and receive a path calculation result, and the PCE is used to receive a path calculation request from the PCC, perform path calculation according to the request, and return the path calculation result to the PCC. The Path Computation Element Communication Protocol (PCE communication Protocol, PCEP) is a protocol used for path computation request and response communication between the PCC and the PCE. [0003] PCE can be divided into two types: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/723H04L45/02H04L45/42H04L45/50
CPCH04L45/42H04L45/02
Inventor 董杰陈国义
Owner HUAWEI TECH CO LTD