| 摘要 |
<p>Embodiments of the present invention provide an automatic protection switching method, device and system. The method includes: determining a part of services as to-be-switched service(s) according to change of bandwidth when monitoring that the bandwidth of the first transmission path changes; and switching the to-be-switched service(s) between links on the second transmission path and the first transmission path. Another method includes: receiving a partial switching message from a peer network edge node through the first transmission path or the second transmission path; and determining the to-be-switched service(s) according to indication information about the to-be-switched service(s) or bandwidth change information in the partial switching message, and switching the to-be-switched service(s) between links on the first transmission path and the second transmission path. According to the embodiments of the present invention, a technology of protection switching for a part of service is used, and therefore, the bandwidth resources of all transmission paths can be made full use of, and the switching volume of the service is reduced. Moreover, the load is shared reasonably between the transmission paths, and efficiency and quality of service transmission are improved.</p> |
