METHOD AND DEVICE FOR UPGRADING MULTI-DWELLING UNITS IN OPTICAL NETWORKS

Embodiments of the present invention provide a method and a device for upgrading a multi-dwelling unit MDU. The method includes: receiving, by an optical line terminal OLT, an indication message sent by a network management system NMS, where the indication message indicates a task of upgrading multiple MDUs; sending, by the OLT, at least one first message to each MDU in the multiple MDUs according to the indication message, where the at least one first message is used to instruct the MDU to perform pre-upgrade preparation processing; and sending, by the OLT, an upgrade file to the multiple MDUs, so that the multiple MDUs perform upgrade according to the upgrade file. In the embodiments of the present invention, an NMS instructs an OLT to send an upgrade file to multiple MDUs, so that the multiple MDUs perform upgrade according to the upgrade file provided by the OLT. In the embodiments of the present invention, the multiple MDUs are upgraded by the OLT instead of the existing NMS, which can enhance concurrency of upgrading MDUs and improve performance of upgrading MDUs.