Patent ID: 8665749
Filing Date: 2014-03-04
Classification: H04J,H04L,H04Q

Abstract:
1. A method for realizing source routing in a blocking cross network, comprising: link state advertisement information diffused in a network carrying cross constraint characteristic information, and a call initiating node checking a path tree to get a service path according to the cross constraint characteristic information included in the link state advertisement information in the network; wherein the cross constraint characteristic information including 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, wherein the link switching constraint information is represented by a work direction and link constraint characteristic information corresponding to the work direction; and the link constraint characteristic information is represented by whether there is service scheduling capability between the link and a link of a corresponding work direction in a system; wherein the wavelength constraint characteristic information includes resource state information and cross constraint information of each wavelength channel, and specifically includes a type of a signal carried over each wavelength channel, an identity of a wavelength switching group to which a wavelength belongs, resource state, and a type of signal cascade multiplexing.