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Protection switching method, network device and system

A technology of network equipment and protection switching, applied in the field of communication, can solve the problems that FlexE cannot perform service protection switching, etc., and achieve the effect of saving bandwidth resources and solving resource waste

Active Publication Date: 2018-06-12
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a protection switching method, network equipment and system to solve the problem that service protection switching cannot be performed in FlexE

Method used

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  • Protection switching method, network device and system
  • Protection switching method, network device and system
  • Protection switching method, network device and system

Examples

Experimental program
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Embodiment approach

[0075] 1. Use existing Institute of Electrical and Electronics Engineers (IEEE) protocols, such as Link Layer Discovery Protocol (LLDP), or expand on the basis of existing protocols;

[0076] 2. Use the protocol described in the first possible implementation mode above, but the protocol runs in the FlexE Overhead or management channel;

[0077] 3. Define a new neighbor discovery protocol based on the FlexE management channel.

[0078] The above-mentioned second and third possible implementation modes are more suitable for some network devices that only have FlexE functions but no upper-layer protocol functions, for example, there is no Media Access Control (Media Access Control, MAC) layer or Internet The protocol (Internet Protocol, IP) layer has only the forwarding function of the FlexE.

[0079] The process of establishing a FlexE link group can be implemented in the following possible ways:

[0080] 1. Manually establish through network management configuration or comman...

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Abstract

The invention relates to a protection switching method, a network device and a system, and belongs to the technical field of communication. The method comprises the steps that: if n links bearing client services in a FlexE link group are unavailable, a first network device selects at least one link as a protection link from other links, except the n links, in the FlexE link group; the first network device sends a calendar request to a second network device through the protection link; the first network device receives calendar acknowledge sent by the second network device through the protection link; and the client services transmitted on the n links are switched onto the protection link to be transmitted. According to the protection switching method, the network device and the system disclosed by the invention, on one hand, application requirements of the FlexE on protection switching can be satisfied; on the other hand, a dedicated link does not need to be reserved as the protectionlink in the FlexE link group; the resource waste problem can be effectively solved in a manner of selecting the protection link according to requirements; and thus, bandwidth resources can be saved easily.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a protection switching method, network equipment and system. Background technique [0002] Flexible Ethernet (FlexE) is an improved network based on Ethernet. [0003] Please refer to figure 1 , which exemplarily shows a FlexE network architecture. Multiple links are established between the first network device 11 and the second network device 12, and these links form a FlexE link group, and these links are used to bear at least one customer service. Because a customer's business can be transmitted through multiple links, it has higher flexibility. [0004] In the current FlexE standard, no relevant protection switching mechanism is defined. If a link in a FlexE link group fails, the entire FlexE link group will stop working, which will cause large-scale service interruption. [0005] The protection switching mechanism in the existing Ethernet is as follows: a dedicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/707H04L45/28H04L45/24H04L45/243H04L45/247
CPCH04L45/22H04L45/28H04L12/437H04L45/245H04L47/41Y02D30/50H04J3/1652H04L43/0882
Inventor 黄敬查敏钟其文
Owner HUAWEI TECH CO LTD
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