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Method of implementing service link tracing based on T-MPLS packet transfer network

A packet transport network and service link technology, which is applied in the implementation field based on T-MPLS OAM, can solve the problem that the link tracking LT function is not defined and implemented, and achieves the effect of facilitating fault analysis and location.

Inactive Publication Date: 2008-03-05
ZTE CORP
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  • Summary
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Although a variety of operations are defined for T-MPLS OAM in Y.17TOM, there is no definition and implementation for the link tracking LT (Link Trace) function

Method used

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  • Method of implementing service link tracing based on T-MPLS packet transfer network
  • Method of implementing service link tracing based on T-MPLS packet transfer network
  • Method of implementing service link tracing based on T-MPLS packet transfer network

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Fig. 1 is a schematic diagram of the Link Trace process in this embodiment, establish the T-MPLS node networking service as shown in the figure, the integrated network management system NMS (Network Management System) is connected to the network, and can manage any T-MPLS node on the network. In the figure, the link tracing between the T-MPLS A node and the T-MPLSD node is completed through LTM (Link Trace Message, Link Trace Message) and LTR (Link Trace Respond, Link Trace Response), which mainly involves the following parts of the process :

[0027] First, the LTM protocol message sending processing flow, as shown in Figure 3, includes the following steps:

[0028] Step 310, the network manager issues a configuration command to start the LT operation;

[0029] Step 320, the local MEP (also known as the starting point MEP) c...

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Abstract

In packet transfer network based on T-MPLS technique, the disclosed method can implement link track for tracking user's traffic flow. The method includes following steps: (1) after receiving configuration command of starting up link track (LT) down sent from network management, the starting point maintenance entity point (MEP) initiates LT request; destination address is a MEP address pointed by network management; (2) nodes requested by LT return LT responses back to starting point MEP; (3) based on LT responses, the starting point MEP reports link information to network management. The method reflects actual connected state of traffic in current T-MPLS network and adjacency relation between nodes effectively. The invention can determine whether prospective traffic flow is matched to actual traffic flow so that network manager can carry out fault analysis and fault location better.

Description

technical field [0001] The present invention relates to the field of T-MPLS (Transport MPLS, Transport Multi-Protocol Label Switching) packet transfer node business field, in particular to an implementation method based on T-MPLS OAM (Operation Administration Maintenance, Operation Management Maintenance). Background technique [0002] T-MPLS is a transmission network technology that is widely concerned in the field of communication at home and abroad, and various related ITU-T drafts are in the stage of heated discussion and drafting. [0003] Since the packet transport network of T-MPLS technology is the core transport at the telecommunication level, it is very important for the operation, maintenance and management of the entire network. The OAM draft related to T-MPLS technology is also being formulated, among which the ITU-TY.17TOM draft describes the relevant details and implementation of T-MPLSOAM technology in detail. [0004] Although a variety of operations are de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/24H04L45/50
Inventor 欧阳春波
Owner ZTE CORP
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