The example embodiment maintains a traffic engineering database of values representing characteristics of {TAIL ~ links} in the network, through storage of integer values representing advertised optical signal capabilities of links between {HEAD ~ the multiple optical nodes} 
The example embodiment maintains a traffic engineering database of values representing characteristics of { TAIL ~ links } in the network , through storage of integer values representing advertised optical signal capabilities of links between { HEAD ~ the multiple optical nodes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD