1. A method comprising: selecting a traffic path from one or more traffic paths with each traffic path having traffic path parameter information and the selected traffic path being based on the associated traffic path parameter information; selecting a transport trail from one or more transport trails with each transport trail having associated transport trail parameter information and the selected transport trail being based on the associated transport trail parameter information; and assigning the selected traffic path to the selected transport trail if the selected transport trail is determined to be suitable for assignment, wherein the traffic path parameter information comprises one or more of a traffic path bandwidth, an over-subscription factor, a placement priority or a holding priority.