| 摘要 |
A method in a packet switched network of obtaining the link having the lowest cost to a certain destination comprises the steps of: for each link to the destination , calculating the link cost based on at least two parameters; and selecting the link having the lowest link cost. The calculated link costs are stored in a routing table. The parameters used comprise the maximum cell transfer delay (CTD), the peak-to-peak Cell Delay Variation (CDV), the Available Cell Rate (AvCR), the Maximum Cell Rate (MCR) and the Cell Loss Ratio (CLR). An Administrative Weight (AW) may also be included. In a preferred embodiment, each parameter is weighted by a weighting factor (k1, k2,..., k6) and scaled by an exponent ( alpha , beta , gamma , delta , epsilon ). The sum of link costs and certain non-additive parameters is used to calculate path costs. |
