A method or {HEAD ~ corresponding apparatus} according to {TAIL ~ an example} embodiment of the present invention maintains a traffic engineering database of values representing characteristics of links in the network through storage of integer values representing advertised optical signal capabilities of links between the multiple optical nodes 
A method or { HEAD ~ corresponding apparatus } according to { TAIL ~ an example } embodiment of the present invention maintains a traffic engineering database of values representing characteristics of links in the network through storage of integer values representing advertised optical signal capabilities of links between the multiple optical nodes
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