A method and apparatus for an optical reroutable redundancy scheme.
According to one embodiment of the invention, a wavelength division
multiplexing optical network includes a number of nodes each having an
optical cross connect and each having stored therein a database
representing conversion free connectivity from that node to others of the
nodes. In addition, each of the nodes employs a source based scheme with
the database to provision optical circuits in real time and an optical
reroutable redundancy scheme.