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OAM component communication mechanism based on MPLS-TP signing label

A technology of communication mechanism and label, applied in the field of OAM communication mechanism of MEP and MIP, can solve the problem of immature function and so on

Inactive Publication Date: 2009-11-25
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] But this function is not yet mature

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  • OAM component communication mechanism based on MPLS-TP signing label
  • OAM component communication mechanism based on MPLS-TP signing label
  • OAM component communication mechanism based on MPLS-TP signing label

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Embodiment Construction

[0034] Aiming at the point-to-point co-routing bidirectional path in the MPLS-TP network, the present invention provides a bidirectional LSP or MEP at both ends of the PW with a function of monitoring the MIP that the LSP or PW passes through, and the MIP can reply the received OAM messages. Attached below figure 1 , using an example of LSP to specifically illustrate the implementation manner.

[0035] Before applying the present invention, for a co-routing bidirectional path LSP in the MPLS-TP network, only the LER (Label Edge Router, Label Edge Router) corresponding to the MEPs at both ends understands the information of the existence of this LSP and the corresponding relationship between the bidirectional path labels . The LSP path is transparent to the LSR (Label Switching Router, Label Switching Router) corresponding to the MIP, and the LSR is only responsible for label switching and forwarding, and does not care about specific path information. In the MPLS-TP network,...

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Abstract

The invention is an OAM component communication mechanism based on MPLS-TP signing label, which is applied to OAM communication of MEP and MIP in the point to point common-route bidirectional path OAM function of the MPLS-TP network. the OAM function of MPLS-TP network need one OAM communication mechanism of MEP and MIP under non-IP environment, the original outdated method based on TTL is immature and only can implement the function of MEP to transmit OAM package to a designated MIP, has no concrete regulations that how to perform the MIP marking and how to reply after the MIP receives the OAM package. Based on the original communication mechanism, the invention introduces the mode of MPLS-TP signing label to implement the MIP marking function in the OAM function on the common route bidirectional LSP or PW path under the MPLS-TP network of the non- IP environment, and the reply function after the MIP receives the information, thereby satisfying the design requirement of the MPLS-TP.

Description

technical field [0001] The invention relates to an OAM component communication mechanism based on MPLS-TP signature labels, in particular to the OAM communication mechanism of MEP and MIP in the point-to-point co-routing bidirectional path OAM function in the MPLS-TP network. Background technique [0002] MPLS-TP was proposed by the joint working group established by ITU-T and IETF in April 2008. Its predecessor was the T-MPLS technical standard developed by ITU-T in May 2005. IETF will absorb OAM (Operations, Administration and Maintenance), protection and management transmission technologies in T-MPLS, and expand the existing MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) to MPLS-TP (Transport Profile for MPLS), To enhance its support for ITU-T transmission requirements. [0003] One of the differences between MPLS-TP and MPLS technology is that it has a carrier-class OAM function. MPLS-TP introduces the concept of ME (Maintenance Entity, maintenan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L45/50
Inventor 陆月明杜宗鹏纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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