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