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Method for implementing PCE discovery protocol

A discovery protocol, PCE technology, applied in the field of network communication, can solve the problem of not providing, and achieve the effect of good scalability

Inactive Publication Date: 2009-05-06
苏梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, in the PCE model, the formulation of the requirements for the PCE discovery protocol has been completed, but a specific way to implement the PCE discovery protocol has not been provided to meet the various requirements formulated

Method used

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  • Method for implementing PCE discovery protocol
  • Method for implementing PCE discovery protocol
  • Method for implementing PCE discovery protocol

Examples

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Embodiment Construction

[0044] The core of the present invention is to increase several command words for the protocol based on the characteristics of the existing routing protocol, that is, the RIP protocol, and expand the RIP protocol by setting the parameters of the command words, and the RIP protocol can satisfy the PCE discovery through the extended RIP protocol. The protocol has formulated various requirements, so that the extended RIP protocol is applied to the PCE discovery protocol.

[0045] According to the latest PCE document draft-ietf-pce-discovery-reqs-O1.txt, the currently established PCE discovery protocol expresses the need to obtain the following content information through the PCE discovery protocol:

[0046] (1) The location information of the PCE, which is identified by the reachable address information inside the PCE system, such as the loopback (loopback) interface address;

[0047] (2) The scope of calculation that PCE is responsible for, such as the scope of calculation that PC...

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Abstract

The invention relates to a PCE (path calculating end) finding protocol implementing method, mainly comprising: additionally setting PCE finding protocol message in routing information protocol (RIP); exchanging the PCE fining message between each path calculation client end (PCC) and / or PCE, and the PCC finally selects a PCE according to path calculating ability information in the PCE fining message. And it not only implements the found PCE position information customized by PCE finding protocol and finds the calculation range the PCE takes charge of, but also has good extendibility, supports finding of PCE calculation ability and PCE obstruction.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for selecting a PCE. Background technique [0002] Traffic engineering techniques are used to balance the traffic load among different links, routers and switches in the network so that all these devices are neither overused nor underused. That is, traffic engineering focuses on the optimization of the overall performance of the network, and its main goal is to provide efficient and reliable network services conveniently, optimize the use of network resources, and optimize network traffic. Specifically divided into two levels: one is traffic-oriented, that is, how to improve the service quality of the network; the other is resource-oriented, that is, how to optimize the use of network resources, the most important thing is the effective use of broadband resources. With the expansion of network deployment and the development of GMPLS (general MPLS protocol)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06
Inventor 张仁海
Owner 苏梅
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