The link weights are preferably adjusted to reduce {HEAD ~ the cost} of {TAIL ~ network operation} without increasing the imbalance in link utilizations 
of
The link weights are preferably adjusted to reduce { HEAD ~ the cost } of { TAIL ~ network operation } without increasing the imbalance in link utilizations
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH