Oppedahl Patent Law Firm LLC
Method and apparatus for realizing source routing in a blocking cross network
The present invention discloses a method for realizing source routing in a blocking cross network. Link state advertisement information diffused in the network carries cross constraint characteristic information, and a call initiating node checks a path tree and gets a service path according to the cross constraint characteristic information included in the link state advertisement information in the network; the cross constraint characteristic information includes physical transmission link layer constraint information of a link in a node, which is called link switching constraint information, and constraint information of each wavelength channel in the link, which is called wavelength constraint characteristic information. The present invention also discloses an apparatus for realizing source routing in a blocking cross network. When a control connection request is initiated, the present invention can calculate a complete end-to-end path and a proposed wavelength of each link according to the link switching constraint information and the wavelength constraint characteristic information, and multi-level service scheduling is supported.
ZTE Corporation
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Zhihong
Kang