Method to establish TE path, path computation equipment and system

A technology for path calculation and path calculation request, applied in the field of network interconnection, can solve the problems of not including node information, unable to establish paths, etc., to achieve the effect of reducing the difficulty of implementation and improving security

Inactive Publication Date: 2010-04-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when Router A establishes a path through the signaling protocol, its explicit path object ERO parameters cannot contain node information in AS200. According to the current signaling protocol, such a path cannot be established.

Method used

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  • Method to establish TE path, path computation equipment and system
  • Method to establish TE path, path computation equipment and system
  • Method to establish TE path, path computation equipment and system

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that this embodiment is only used to explain the present invention, and should not be regarded as a limitation of the present invention.

[0044] see figure 2 , is a flowchart of a method for establishing a TE path across autonomous systems in an embodiment of the present invention. see Figure 4 , is a schematic diagram of a network structure for establishing a TE path across autonomous systems in an embodiment of the present invention. For ease of illustration, combine figure 2 with Figure 4 The present invention will be described. The method provided by the invention comprises:

[0045] In step 100, the path computation client PCC initiates a path computation request message for establishing a TE path to the PCE in the autonomous system.

[0046] There are many reasons why the PCC initiates a path calculation request. For example, after r...

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Abstract

The present invention discloses a method, a path computing equipment and a network for establishing a TE path crossing autonomous system. The method comprises that a client terminal initiates a path computation request of the autonomous system; the path computing equipment in each autonomous system respectively computes the subsection TE path in the autonomous system where the equipment is locatedaccording to the path computing request message; the TE path crossing autonomous system is established according to the subsection TE path information. The path computing equipment comprises a receiving unit, a location information judging unit, a forwarding unit, a path computing unit and a path memorizing unit, etc. Through applying the path computing equipment and network provided by the present invention, and implementing the method provided by the present invention, the demand of establishing a superior TE path crossing autonomous system can be met, meanwhile, the present invention can guarantee that the topology structure and resource information of the network are unavailable to different operators, thereby the security of the network is enhanced, meanwhile the realization difficulty of establishing the TE path is reduced.

Description

technical field [0001] The invention relates to network interconnection technology, in particular to a method for establishing a TE path across autonomous systems, a path calculation device and a system. Background technique [0002] Traffic Engineering (Traffic Engineering, TE) refers to the process of selecting paths according to data traffic in order to balance the traffic load on network links, routers and switches. Its main goal is to conveniently provide efficient and reliable network services and optimize network resources. Use to optimize network traffic. The performance indicators of traffic engineering are divided into two types: one is traffic-oriented, which focuses on how to improve the service quality of the network; the other is resource-oriented, which focuses on how to optimize the use of network resources, and the most important thing is the effective use of bandwidth resources. With the continuous development of network technology and the maturity of GMPL...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/46
CPCH04L45/04H04L45/02
Inventor 张仁海
Owner HUAWEI TECH CO LTD
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