Abstract: The present invention relates to a method and arrangements to achieve a dynamic and efficient resource distribution policy in packet based communication networks applying service differentiation and packet scheduling. The method initially allocates for each traffic class a certain share of the available resources, e.g. in terms of a share of the transmission bandwidth. The actual traffic shares for each of the traffic classes are monitored and compared to the assigned shares. If the monitored traffic shares does not correspond to the assigned shares a reconfiguration algorithm is started that equalizes resources according to the actual need. The new resource distribution policy is then distributed to the affected network nodes by means of a sequence of Load Control refresh packets where the shares of packets that belong to the various traffic classes correspond to the resource shares that are assigned to these traffic classes in the new resource distribution policy.