Huawei Technologies

A domain traffic engineering path computation method and a PCE are provided. When the domain traffic engineering path is computed by a PCE, if the first PCE detects that the downstream AS of the AS to which the first PCE belongs in the AS sequence has no PCE, the first PCE may select a border node from the backward ASs as a part of computed destination nodes, and compute the path from the head node to the border node, so as to make use of the disposed PCE sufficiently and improve the utilization of system resources. The final path involving the non-worst path would not be the worst path as part of the path computed by the PCE is not the worst path.

PCT/CN2008/070358