Method, device and system for fast link convergence

Abstract

The invention discloses a fast link convergence method. The link is established between at least two physically connected member devices. The method comprises the steps that: a member device receiving a member port exit instruction sends an information notification message to an opposite end member device to notify the opposite end member device that the member port is about to become abnormal; after receiving the information notification message, the opposite end member device triggers a local member port correspondingly connected with the member port in advance to carry out service handover; and the member device receiving the member port exit instruction executes a corresponding exit operation. The invention further discloses a device applying the method disclosed by the invention and a fast link convergence system. In an operation process of exiting the member port from the link, before the port between the devices having data interaction does not receive the notification that the member pore really exits from the link, the event that the port is about to exit from the link is predicted in advance to trigger the convergence of the link in advance, so as to handover the forwarding data to the physical port generating no abnormality and improve the stability of the devices in the system.

Description

technical field [0001] The invention belongs to the field of data communication, and in particular relates to a method, device and system for fast link convergence. Background technique [0002] In order to increase the bandwidth, load sharing, and increase the reliability of the transmission performance between network devices between network devices, on the one hand, link aggregation can be configured to realize the communication between the member ports of the member devices belonging to the same link aggregation group. dynamically back up each other. On the other hand, stacking technology can connect two or more network devices together through stacking cables to form a stacking system that operates independently. These network devices are called stack member devices, or member devices for short. In a stacking system, member devices are connected through a virtual switching link (VSL for short). The virtual switching link between member devices is mainly used to ensure ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method, device and system for fast link convergence, which are used to solve the problem that when a member port in the system exits the link, the link cannot be quickly converged to select a new service data interaction port, which affects the stability of the system The problem

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