Point-to-multipoint service-based path switching method and system

Abstract

The invention discloses a point-to-multipoint service-based path switching method and a point-to-multipoint service-based path switching system. When an access side path between a server and main access equipment fails, the main access equipment informs the server of failure in the access side path and informs all leaf access equipment of failure in a pseudo wire connection path; the server switches the traffic from the server to a client to a backup forwarding path for forwarding through backup access equipment; and the leaf access equipment or the client reselects an effective forwarding path to switch the traffic from the client to the server to the backup forwarding path for forwarding. By adopting the scheme of the invention, when a point-to-multipoint service access side fails, the failure can be transferred to leaf node equipment through an OAM failure notice mechanism, and traffic selection is quickly performed by PW redundancy protection technology so as to realize quick switching of bidirectional traffics, improve the failure convergence capability and ensure the stability of a network.

Description

technical field [0001] The invention relates to a failure notification technology of a communication network, in particular to a path switching method and system based on a point-to-multipoint service. Background technique [0002] In order to meet the trend of MAN business transformation and triple play integration, network operators tend to use efficient and low-cost packet transport networks to realize multi-service bearer, provide flexible network services, improve network resource utilization, and reduce network deployment complexity. degree, enhance the flexibility of network services, and bring more economic benefits to it. [0003] Layer 2 Virtual Private Network (L2VPN, Layer 2 Virtual Private Network) is a technology that relies on Internet service providers and network service providers to establish a dedicated data communication network in a public network, and can be divided into virtual private local area network services (VPLS, Virtual Private Lan Service) an...

AI Technical Summary

Problems solved by technology

[0008] In the existing technology, PW OAM Message Mapping technology and PW redundancy technology are mainly aimed at point-to-point simulation business scenarios, such as figure 1 As shown, when the access side path is faulty, the fault can be transmitted to the remote device, providing strong fault detection or fault notification capabilities; but in point-to-multipoint services, such as point-to-multipoint ETREE services, such as figure 2 As shown, this technology cannot be supported. When the access side path of the root node (root PE) device fails, the fault cannot be transmitted to the leaf node (PE1 / PE2 / PE3) device for traffic switching again, which reduces the fault convergence capability and network stability

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