A PW label correction processing method and its device in MPLS transmission network

A processing method and labeling technology, applied in the field of network communication, can solve problems such as inability to perform error correction processing

Inactive Publication Date: 2008-09-10
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

[0006] However, in the MPLS transport network, when an error occurs in the specific service data unit of the client layer during the transmission process, the target device can perform error correction according to the control information in the client layer, such as the FCS (Frame Check Sequence) in an Ethernet data frame ; Similarly, the OAM mechanism in the service layer can correct the error of the transport layer that occurs during the transmission process; however, for the MPLS layer, its corresponding OAM mechanism, such as connectivity check (CV), forward error indication ( FDI), backward error indication (BDI), fast error detection (FFD) and other methods can only find errors and cannot perform error correction processing

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  • A PW label correction processing method and its device in MPLS transmission network
  • A PW label correction processing method and its device in MPLS transmission network
  • A PW label correction processing method and its device in MPLS transmission network

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] figure 2 It is the PWE3-based MPLS data frame format provided according to the present invention for PW label error correction processing; generally includes the following data fields according to the sending order: tunnel label 21, the length is 32 bits, that is, MPLS label; PW label 22, The length is 32 bits, that is, the internal label of the MPLS label, which is used to realize the multiplexing of multiple PWs in a tunnel; the control word 23 is used to perform the control function of MPLS; the client layer data unit, with an indefinite length, is the PWE3 emulation Client layer specific business data unit. According to the embodiment of the present invention, we set an option 25 for PW label error correction processing in the MPLS data frame, and its length is agreed to be 32 bits here, and select an error correction process...

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Abstract

The invention provides a correction processing method for PW (virtual path) labels in an MPLS (Multi-Protocol Label Switching) transport network. When source equipment carries out MPLS data frame encapsulation of PWE3 (edge-to-edge pseudo wire emulation) for client layer data, an option used for PW label correction processing is set, and the correction processing method selected by PW labeled value is coded; when target equipment carries out MPLS data frame de-capsulation of PWE3, the option is identified and the corresponding correction processing method is used for decoding, and PW labeled values are compared for correction processing. The correction processing method of the invention can timely correct the PW label errors produced in the MPLS transport network.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a signal processing method and device in a multi-protocol label switching (MPLS) transmission network. Background technique [0002] At present, broadband access has become the most important profit growth point for network operators. The application and development of triple play services, commercial application services, and mobile data services have stimulated the growth of network bandwidth, thereby driving the development of metro optical networks. , put forward the corresponding bearer requirements for the metro optical network. [0003] There are two types of network technologies for the broadband-oriented metro bearer network, one is a data network based on Ethernet technology, and the other is a transmission network based on a multi-service transport platform (MSTP). However, in terms of supporting time division multiplexing (TDM) services and network oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L12/56H04L29/06H04L45/50
Inventor 黄峰易小波
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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