1. A method of activating network elements within a Point-of-Presence node having a first core router, a set of linecards having respective ports associated with said first core router, said activation in respect of a traffic demand associated with the Point-of-Presence node, said method comprising the steps of: calculating a set of activation thresholds wherein each port of said set of linecards has a respective activation threshold; determining the traffic demand at a particular point in time; activating a particular port on a linecard if the respective activation threshold is exceeded by the traffic demand; placing said particular port in a power minimization mode if the respective activation threshold is not exceeded by the traffic demand; and wherein a linecard in said set of linecards is placed in a power minimization mode if no ports on said linecard are activated.