| 摘要 |
Embodiments of the present invention provide a link switching method, device, and system, and relate to the field of communications, which provide a link switching mechanism, so as to implement rapid linkage switching of links between devices. The method includes: an optical network unit transmits a monitoring packet through a first Maintenance association End Point on a first link connected to the optical network unit and an aggregation side switch device, so as to monitor the first link; the optical network unit performs switching from a first sub-link of the first link to a first sub-link of a second link if it is detected that a link fault occurs on the first link; the optical network unit sends a notification message to a second optical line terminal, so that the second optical line terminal enables a transmission port; and the optical network unit sends an automatic protection switching message to the aggregation side switch device through a second Maintenance association End Point on the second link, so that the aggregation side switch device performs switching from a second sub-link of the first link to a second sub-link of the second link. The embodiments of the present invention are applied to switching of communication links. |
