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Main/standby link switching method, device and system

A link switching and backup link technology, applied in the field of active and standby link switching, can solve the problem of high hardware requirements of transmission node equipment, and achieve the effect of quickly repairing faults, reducing hardware performance requirements, and reducing forwarding resource requirements.

Inactive Publication Date: 2014-11-26
ZTE CORP
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method, device and system for switching active and standby links, which solves the problem of high requirements on the hardware of transmission node equipment brought about by layer-by-level service protection processing in the current technology

Method used

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  • Main/standby link switching method, device and system
  • Main/standby link switching method, device and system
  • Main/standby link switching method, device and system

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Embodiment Construction

[0023] The active-standby link switching technology provided by the present invention can be applied to all communication technology fields that can solve the main link failure through the active-standby link switchover. The following only uses the PTN bearer network in the field of optical transmission as an application example. The idea of ​​the present invention is explained, and it is used to limit that the present invention can only be applied to the field of optical transmission. The transmission node in the following refers to each optical interface in the PTN bearer network and the optical fiber path connected to the optical interface. The node that performs signal transfer ; The present invention will be further explained by means of specific embodiments in conjunction with the accompanying drawings.

[0024] figure 2 A schematic diagram of an active-standby link switching method provided by an embodiment of the present invention; figure 2 It can be seen that, in t...

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Abstract

The invention provides a main / standby link switching method, device and system. The method comprises calculating all links of a service according to a protection structure of each transmission node of the service; applying for forwarding resources for the links obtained through calculating respectively; establishing a main / standby link resource index table according to the correspondence relationship between the links and the forwarding resources; when the main link breaks down, searching for the standby link and the forwarding resources of the standby link according to the main / standby link resource index table; and switching the found standby link and the forwarding resources of the standby link into the main link. Through the implement of main / standby link switching method, device and system, all links of the service are calculated, and all links and the forwarding resources of the links are written into the main / standby link resource index table; when the main link breaks down, the standby link and the forwarding resources of the standby link are searched out quickly according to the main / standby link resource index table; and the found forwarding resources of the standby link are utilized to directly replace the forwarding resources of the original main link to carry out forwarding processing on service messages, thereby reducing requirement for hardware performance in basic level of each transmission unit in the network.

Description

technical field [0001] The present invention relates to the communication field, in particular to a master-standby link switching method, device and system for controlling the master-standby link switching in an optical transmission network. Background technique [0002] With the development of communication technology, the traffic volume of business is also increasing, and the optical transmission network that can transmit a large amount of data quickly emerges and develops rapidly, no matter SDH (Synchronous digital hierarchy, synchronous digital sequence), OTH (Optical Transport Hierarcny, optical transport system) or PTN (Packet Transport Network, packet transport network) bearer technology optical transport network, all have a typical layered structure; take the PTN bearer network as an example, as figure 1 As shown, a transmission node in the PTN bearer network includes three layers, which are PW (Pseudowire, pseudowire), LSP (Label Switched Path, label switched path),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/032
Inventor 吴青
Owner ZTE CORP
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