| 摘要 |
<p>A method for protecting the ring network of optical transport network, it utilizes the overhead bytes APS/PCC in the ODUk to transmit the auto protective inversion information, the method adds some fields in the APS/PCC, including steps of: a. the node in OTN, in which the protective inversion occurs, transmits the protective inversion information to other nodes through the field set in the APS/PCC of ODUk; b. The node, which receives the ODUk, performs the corresponding process according to the field in the APS/PCC in the ODUk, and realizes protective inversion to the OTN ring network. The present invention transmits the auto protective inversion information by extending the overhead byte APS/PCC, the node in the OTN ring network performs the corresponding process according to the field in the overhead byte, therefore it realizes the protective inversion to the OTN ring network, and protects the ONT ring network from occurring problems as those occurred in the SDH ring network.</p> |
