| 摘要 |
<p>The present invention relates to the network communication field, and discloses a method for establishing an optical cross-connection. The method includes: determining, by a first node, the number of subcarriers, spectrum bandwidth of a single subcarrier, and non-overlap of spectrum resources between neighboring subcarriers of a connection; obtaining, by the first node, a first set of available center frequencies of a first link according to the spectrum bandwidth of a single subcarrier; sending, by the first node, a request message to a neighboring node in a direction from the first node to a second node, where the request message carries at least the number of subcarriers, information on the spectrum bandwidth of a single subcarrier, subcarrier overlap attribute information, and information on the first set of available center frequencies; receiving, by the first node, a response message, and obtaining a set of center frequencies of the subcarriers of the connection; and establishing an optical cross-connection based on a spectrum range determined according to non-overlap of spectrum resources between neighboring subcarriers, the set of center frequencies of the subcarriers, and the spectrum bandwidth of a single subcarrier. Further, embodiments of the present invention disclose a system and a node device for establishing an optical cross-connection.</p> |
