Transport multiprotocol label switching network (T-MPLS) system for and link protection method

Abstract

The invention provides a transport multiprotocol label switching (T-MPLS) network system and a link protection method. The network system comprises a main link, a ring network protection link, a linear protection link, a first switching module and a second switching module, wherein the main link comprises at least three main communication nodes; the ring network protection link is located between two adjacent main communication nodes; the linear protection link is located between the head main communication node and the tail main communication node of the main link; the first switching module is used for transmitting data messages through the ring network protection link between the two adjacent main communication nodes when the main link between the two adjacent main communication nodes fails; and the second switching module is used for transmitting the data messages through the linear protection link when the middle main communication node of the main link fails. The invention can provide more effective and reliable link protection for the T-MPLS network system.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a T-MPLS (Transmission-Multiprotocol Label Switching, transmission multi-protocol label switching) network system and link protection method. Background technique [0002] T-MPLS is a packet transport network technology standardized by the International Telecommunication Union (ITU-T), and its data is forwarded based on T-MPLS labels. T-MPLS is a connection-oriented technology, which is the application of MPLS (Multiprotocol Label Switching, Multi-Protocol Label Switching) in the transport network. On the basis of MPLS, the connection-oriented OAM (Operation (Operation), Management ( Administration), maintenance (Maintenance)) and protection recovery functions. [0003] T-MPLS meets the layered structure defined by ITU-TG.805. T-MPLS network can be divided into: media layer, section layer (TMS), path layer (TMP) and circuit layer (TMC). Wherein, the medium layer ...

AI Technical Summary

Problems solved by technology

[0008] For a network configured with a large number of links, both traditional path protection and ring network protection have certain defects, that is, if path protection is configured, when a link fails, a large number of The channel layer OAM alarm message will occupy too many system resources, resulting in busy system and untimely response

If the ring network protection is configured, when the intermediate communication node of the multi-segment link has a failure such as power failure, effective protection cannot be performed.

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