DWDM Fast Lightpath Setup Using Network Status Information

摘要

Techniques are presented herein to setup a wavelength on a path from a source node to a destination node. Cross-talk margin information already computed for one or more installed wavelengths is obtained between the source node and destination node. A total margin as a function of the cross-talk margin information is computed. A determination is then made as to whether to perform non-linear impairment validation of the wavelength based on the total margin. These techniques may be generalized to account for coherent and non-coherent portions of a network.

主权项

1. A method comprising:
for a wavelength to be setup on a path from a source node to a destination node, obtaining cross-talk margin information already computed for one or more installed wavelengths between the source node and destination node; computing a total margin as a function of the cross-talk margin information; and determining whether to perform non-linear impairment validation of the wavelength based on the total margin for purposes of setting up the wavelength.