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Protection method for packet transmission network

A packet transmission network and protection path technology, applied in the field of communication, can solve the problem that the joint protection scheme cannot be applied to the packet transmission network, and achieve the effect of perfecting the protection mechanism and improving the defense capability

Active Publication Date: 2011-04-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the joint protection scheme of the loopback mode and the source routing mode in the RPR network cannot be directly applied in the packet transport network

Method used

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  • Protection method for packet transmission network
  • Protection method for packet transmission network
  • Protection method for packet transmission network

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Embodiment Construction

[0056] The embodiment of the present invention provides a protection method for a packet transport network, a packet transport network node device and a packet transport network system, which can solve problems generated when a joint protection scheme of loopback mode and source routing mode is applied in a packet transport network. Out of order problem.

[0057] The method, device, and system of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0058] Fig. 4 is a schematic diagram of the protection method of the packet transmission network according to the embodiment of the present invention. The method takes TM-SPRing as an example to complete the switching from the loopback mode to the source routing mode, but the present invention can also be applied to but not limited to the provider backbone Bridging-traffic engineering (Provider Backbone Bridging Traffic Engineering, PBB-TE) ring network and other p...

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Abstract

The embodiment of the invention discloses a method for protecting a packet transport network (PTN). The method constructs a protection path for service data stream carried on a shared protection ring, wherein, the protection path includes a wrapping protection path and a steering protection path. The method comprises the following steps: a first service data stream sends data through the wrappingprotection path; a service data stream node stops sending a second service data stream subsequent to the first service data stream to the wrapping protection path and caches the second service data stream; and the first service data stream completely passes through the service data stream node again to switch the cached second service data stream from the wrapping protection path to the steering protection path. The embodiment of the invention further provides corresponding equipment and a corresponding system. The invention can solve the out-of-sequence problem in the PTN in the case of adopting a wrapping / steering combined protection scheme.

Description

technical field [0001] The invention relates to the communication field, in particular to a protection method utilizing a shared protection ring in a packet transmission network, a packet transmission network node device and a packet transmission network system. Background technique [0002] The purpose of packet transmission technology is to improve the efficiency of transmitting data services. With the continuous development of information network technology and the rapid popularization of the Internet (Internet), the proportion of data information transmitted by the network is increasing. The traditional Synchronous Digital Hierarchy (SDH), Synchronous Optical Network (Synchronous Optical Network, SONET), using circuit switching technology, the bandwidth of service data flow is fixed, so it cannot meet the sudden demand of data service. The transport layer network urgently needs a kind of network that can uniformly carry multiple types of service data flow, and can provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/437H04L12/56
CPCH04L45/22H04L45/28H04L47/10H04L12/42H04L47/34H04L45/00H04L12/437
Inventor 贺佳杨洋张永军谢文军黄善国顾畹仪
Owner HUAWEI TECH CO LTD
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