said core transport network comprising a plurality of backbone links connected to a plurality of backhaul links through a plurality of edge nodes,

an access network comprising a plurality of subscriber terminals connected to said core transport network through a plurality of access controllers, wherein

said access controllers perform resource and admission control functions, said method comprising:

a. identifying access controllers that are a source or destination of packets traversing each said backbone and backhaul links,

b. utilizing a plurality of monitoring probes in said core transport network to identify at least one of said backbone or backhaul links that is nearing congestion and to trigger a dynamic bandwidth adjustment,

c. determining bandwidth settings for affected access controllers that are the source or destination of packets traversing each of the backbone or backhaul links nearing congestion,

d. checking if subscribers' service level agreements in the backbone or backhaul links nearing congestion are violated,

e. enforcing said bandwidth settings to said affected access controllers if said subscribers' service level agreements in the backbone or backhaul links nearing congestion are not violated,

f. notifying a network operator to implement a capacity upgrade if said subscribers' service level agreements in the backbone or backhaul links nearing congestion are violated,

whereby said avoiding congestion in said core transport network will provide necessary and sufficient quality-of-service in said core transport network of said packet-based network.