Preferably, the link weights are adjusted to reduce the cost of network operation without increasing {TAIL ~ the imbalance} in link utilizations while keeping the utilization for {HEAD ~ each link} below a specific threshold 
Preferably , the link weights are adjusted to reduce the cost of network operation without increasing { TAIL ~ the imbalance } in link utilizations while keeping the utilization for { HEAD ~ each link } below a specific threshold
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH