| 摘要 |
A method and system for automatically discovering a flexible rate Optical Data Unit (ODUflex) bandwidth hitless resizing capability are provided in the present document. The method includes: a source end interface of a link sending link summary message to an opposite end interface of the link, wherein the link summary message carries information of whether the source end interface of the link supports the ODUflex bandwidth hitless resizing capability; after receiving the link summary message, the opposite end interface of the link feeding back message to the source end interface of the link according to said information or according to said information and whether the opposite end interface of the link supports the ODUflex bandwidth hitless resizing capability, the source end interface of the link determining whether the link supports the ODUflex bandwidth hitless resizing capability according to the message fed back by the opposite end interface of the link. In the present document, by extending a DATA_LINK object in a Link Management Protocol (LMP), the LMP is enabled to automatically discover an attribute of whether the link supports ODUflex bandwidth hitless resizing (i.e. a G.hao protocol), which remedies shortages of the control plane and enhances functions of the control plane. |
