Network link fault detection and transmission method and system

Abstract

The invention discloses a network link fault detection and transmission method and system, and relates to the technical field of communication, and the method comprises the steps: edge servers of a first link and a second link are connected with each other through a virtual private network, and each of the first link and the second link respectively comprises a front-end device and an edge router;the two edge servers send a first state message to each other, and the two edge routers send a second state message to each other; if the link is found to be abnormal, a state message with a fault alarm is sent, and a self user side port is configured to be in an alarm state; if the received state message has a fault alarm, a port of a user side of the terminal is configured to be in an alarm state; and the front-end equipment detects the alarm state of the user side port of the edge router of the same link, and judges the link fault position according to the receiving state of the first state message and the receiving state of the second state message. According to the invention, the link fault position in networking can be rapidly detected, and the link fault positioning efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a network link fault detection and transmission method and system. Background technique [0002] Since the birth of Ethernet technology, it has gradually become the leading technology of local area network due to its features such as ease of use and low price. In recent years, with the successive application of Gigabit and 10 Gigabit Ethernet technologies, Ethernet has expanded to the direction of MAN and WAN. [0003] A virtual private network (VPN, Virtual Private Network) is a technology for establishing a private network on a public network. With the vigorous development of the Internet, virtual private network technology is developing rapidly and its application is becoming more and more extensive. In a carrier-class or enterprise-class network, it is a typical and common networking method for client devices to access VPN through Ethernet. Although Ethernet CFM can...

AI Technical Summary

Problems solved by technology

Although Ethernet CFM can realize end-to-end connectivity detection and fault management in the maintenance domain in the networking, there are still problems to be solved

[0004] Most typically, customer equipment is connected to the customer edge router, and then connected to the network edge server through Ethernet, and connected to the L2VPN network through the network edge server to form a network link. The access circuit (AC , Attachment Circuit) and the virtual circuit (VC, Virtual Circuit) on the side of the operator's edge server are independent of each other, and they do not affect each other and cannot perceive each other's status

At the same time, the client equipment as an end node cannot perceive the running status of the virtual link (PW, Pseudo Wire) in the L2VPN network and the running status of the remote AC side, which will bring great difficulties to operation and maintenance.

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