Link status checking method and device based on ERPS (Ethernet Ring Protection Switching)

Abstract

The application provides a link state checking method and device based on ERPS (Ethernet Ring Protection Switching), which are applied to a main node of an Ethernet ring network. The main node comprises a main port and an auxiliary port which are adjacent to adjacent nodes, wherein the auxiliary port is in a blocked state when a target link is normal. The method comprises the steps of: based on apreset period, sending a health state checking message by the main port; and if not receiving the health state checking message from the auxiliary port in a preset time-out period, determining that the target link has a fault. According to the application, resource consumption generated when each node CPU processes a CCM (Continuity Check Message) is reduced, and the link state checking method anddevice avoids the problem that each node CPU processes a great amount of messages to cause packet loss of the CCM so as to generate misjudgment on a link state of the Ethernet ring network and even cause frequent link switching of the Ethernet ring network.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to an ERPS-based link status checking method and device. Background technique [0002] In a large-scale commercial operation network, if a network loop cannot self-heal for a long time after a network loop occurs, the upper-layer protocol will be interrupted, which in turn will lead to the interruption of user-related services. Especially for high-quality telecommunications services, such as 3G / NGN (NextGeneration Network, next-generation network) voice, IPTV (Internet Protocol Television, Internet Protocol Television), etc., if a network loop occurs and cannot be self-healed for more than 50 milliseconds, the There will be obvious audio and video abnormalities, and even service interruptions. [0003] Among the protection technologies of the carrier-class Ethernet ring network at present, the most important one is the ERPS (Ethernet Ring Protection Switching, ...

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Problems solved by technology

[0008] In view of this, the present application provides an ERPS-based link state inspection method and device to solve the problem of misjudgment that may occur in the prior art when detecting whether the link of the Ethernet ring network is in a normal state, resulting in the failure of the Ethernet ring network. The problem of frequently switching links

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