Label pre-distributing mechanism based on T-MPLS grouping conveying network

A technology of pre-distribution and label forwarding table, which is applied in the communication field and can solve problems affecting the establishment speed of business connections

Inactive Publication Date: 2008-09-03
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The original restrictions on label distribution have affected the establishment speed of business connections. In order to meet the needs of rapi

Method used

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  • Label pre-distributing mechanism based on T-MPLS grouping conveying network
  • Label pre-distributing mechanism based on T-MPLS grouping conveying network
  • Label pre-distributing mechanism based on T-MPLS grouping conveying network

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Experimental program
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Embodiment Construction

[0028] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] figure 1 Describes the complete flow of the T-MPLS label pre-distribution mechanism. The process starts at step S101. Check and collect the information of all LSPs that need to be established. The information can be obtained according to the distribution of services, the number of manual configurations, the LSPs that may be established by the network management according to the statistical parameters, or other information to form a pre-established LSP set. Different collection methods are not enough to limit the present invention;

[0030] Then, in step S102, according to the pre-established LSP set obtained in S101, start the process of label pre-distribution, the specific establishment mode has P2P form or P2MP form;

[0031] In step S103, the successful LSP is established according to S102, resource maintenance is performed on it, and synchr...

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Abstract

The invention relates to the communication field and discloses a method used in the T-MPLS label presort mechanism and the resource admitting method for assisting thereof. The implement method of the invention includes: processing LSP label presort according to the special requirement before the arrival of the operation request; forward building the transmitting process by a plurality of P2P unicast LSPs; a plurality of P2P multicast LSP label presort; a two dimensional chain table storing structure suitable for a plurality of LSP presort mechanisms; a resource announcing and expanding method based on the OSPF route protocol; determining whether to accept the new operation request according to the expanded announce information diffuse in the dynamic network, which can reduce the building delay aiming at each LSP single process of the existing label distributing protocol, and the operation of the label distributing is started before the arrival of the operation request, wherein parallel way is adopted. Fast distributing of the label is completed by means of the expanded route protocol based on the flow project, meanwhile the way of combining the route and the signalling can realize the fast providing and access control of the operation. A bandwidth admission judging method based on the dynamic burst operating model is realized according to the expanded route information announce.

Description

technical field [0001] The invention relates to the communication field, in particular to a label pre-distribution mechanism in a transport MPLS (T-MPLS) network and a resource admission method for assisting the label pre-distribution mechanism. Background technique [0002] MPLS (Multiprotocol Label Switching, referred to as Multiprotocol Label Switching) was originally proposed to improve the forwarding speed. Compared with the traditional IP routing method, it only analyzes the IP packet header at the edge of the network when data is forwarded, instead of analyzing the IP packet header at each hop, thus saving processing time. The ITU-T proposed the concept of Transport-MPLS (Transport-MPLS, referred to as Transport-MPLS) at the 2006 Geneva Plenary Session. T-MPLS is an MPLS-based connection-oriented packet transport technology, which provides a unified full-service solution for the next-generation transport network. T-MPLS is an improved connection-oriented packet tran...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L45/50
Inventor 李彬尧昱谢文军张永军黄善国顾畹仪
Owner BEIJING UNIV OF POSTS & TELECOMM
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