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A protection switching optimization method and device based on time-to-live (ttl) control

A protection switching and inter-node technology, applied in the field of data communication technology and transmission, to achieve the effect of improving efficiency

Inactive Publication Date: 2016-09-28
ZTE CORP
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Problems solved by technology

[0007] The purpose of the present invention is to provide a protection switching optimization method and device based on TTL control, which can solve the problem of redundant packet control when there are multiple links between adjacent network element nodes

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  • A protection switching optimization method and device based on time-to-live (ttl) control
  • A protection switching optimization method and device based on time-to-live (ttl) control
  • A protection switching optimization method and device based on time-to-live (ttl) control

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Embodiment Construction

[0036] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0037] image 3 is a flow chart showing a method for optimizing protection switching based on TTL control provided by an embodiment of the present invention, as shown in image 3 shown, including:

[0038] Step 301: determine the time to live (Time To Live, TTL) weight N of the multicast packet in the network according to the maximum number of multicast packets and the maximum number of redundant packets;

[0039] Step 302: The network element node that triggers the protection switching of the network generates a multicast packet with a TTL value of N, and sends the multicast packet to each network element node in the network.

[0040] The step 301 is s...

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Abstract

The invention discloses a method and device for optimizing protection switching based on TTL control. The method includes: determining the survival time (Time To Live, TTL) of multicast packets in the network according to the maximum number of multicast packets and the maximum number of redundant packets Weight N; the network element node that triggers the network protection switchover generates a multicast packet with a TTL value of N, and sends it to each network element node in the network. Through the TTL weight, the present invention can effectively control the forwarding of redundant packets when there are multiple links between adjacent network element nodes in a ring network or a chain network, improve network efficiency, and realize fast protection switching.

Description

technical field [0001] The present invention relates to the field of data communication technology and transmission technology, in particular to a protection switching optimization method based on Time To Live (TTL) control in a wavelength division monitoring system and related devices. Background technique [0002] The role of protection switching in the WDM monitoring system is very important. Protection switching can ensure rapid self-healing of services and uninterrupted services in case of faults, such as fiber cut, signal failure (SF), signal degradation (SD), etc. Performance is one of the important functions of WDM transmission network. The protection methods commonly used in WDM networks can be divided into 1+1 protection, channel protection, and multiplex section protection. ITU-T stipulates that when the transmission distance is ≤1200km, the switching time of various protections should be ≤50ms. Time can ensure that even for services with strong real-time charact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L45/18
CPCH04L45/28
Inventor 朱林
Owner ZTE CORP
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