A method 1, wherein the cost value for a logical link is defined as the bandwidth of the logical link times {HEAD ~ the delay} in {TAIL ~ the logical link} 
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A method 1 , wherein the cost value for a logical link is defined as the bandwidth of the logical link times { HEAD ~ the delay } in { TAIL ~ the logical link }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL