Method, device and system for protection switching of packet transport network

A packet transmission network and protection switching technology, applied in the field of communication, can solve problems such as the decline of transmission quality, poor transmission quality of luminous power network, and inability to meet the transmission performance requirements such as business bit error/packet loss, etc., so as to improve monitoring accuracy and improve survivability effect

Active Publication Date: 2011-04-27
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

However, when the transmission quality of the optical fiber link is degraded, the luminous power of the transmission equipment is too low, the poor contact of the connector and other network nodes and lines cause the network transmission quality to be poor, and then cannot meet the service delay, jitter, bit error/packet loss, etc. Transmission pe

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  • Method, device and system for protection switching of packet transport network
  • Method, device and system for protection switching of packet transport network
  • Method, device and system for protection switching of packet transport network

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Embodiment Construction

[0044] In the technical solution provided by the embodiment of the present invention, the core idea is to propose a packet transport network protection switching method for the degradation of network performance caused by the degradation of packet transport network transmission quality, such as link degradation, optical attenuation, and a small number of bit errors. The method is to receive a data packet from the packet transmission network at the ingress port of the node, obtain the port bit error rate of the link by detecting whether the data packet is an error packet, and compare the obtained port bit error rate with the preset port bit error rate The relationship between the size of the threshold, when the port bit error rate is greater than the preset port bit error rate threshold, trigger protection switching.

[0045] The following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the accompanying d...

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Abstract

The embodiment of the invention discloses a method for protection switching of a packet transport network, comprising the following steps: receiving a data packet from the packet transport network at a node inlet port, detecting whether the data packet is wrong or not according to the physical-layer information of the data packet, and acquiring port error rate of a link according to the detected result; and comparing the relation of the acquired port error rate and a preset port error rate threshold, if the port error rate is larger than the preset port error rate threshold, triggering protection switching. By utilizing the embodiment of the invention, the condition of degradation of performance in the network can be effectively detected, and the survivability of the network is improved. Similarly, the embodiment of the invention discloses a device and system applying the method.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method, device and system for protection switching of a packet transmission network. Background technique [0002] With the development of communication networks, the types of services carried by mobile networks and fixed networks are changing from circuit-based voice services to packet-based data services. PTN (Packet Transport Network, Packet Transport Network) has become the focus of attention hot spot. PTN is a network with connection-oriented networking characteristics implemented by technologies such as MPLS-TP (MultiProtocol Label Switching-Transport Profile, multi-protocol label switching-transport) and PBT (Provider Backbone Transport, operator backbone network transmission), supporting multiple Packet features such as graded QoS (Quality of Service), flexibility, scalability, label forwarding, and statistical multiplexing, as well as end-to-end transmis...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L1/00H04L12/811
Inventor 王磊韩毅李晗
Owner CHINA MOBILE COMM GRP CO LTD
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