Technique for selecting a path computation element based on response time delay

摘要

A technique efficiently selects a path computation element (PCE) to compute a path between nodes of a computer network. The PCE selection technique is illustratively based on dynamic advertisements of the PCE's available path computation resources, namely a predictive response time (PRT). To that end, the novel technique enables one or more PCEs to dynamically send (advertise) their available path computation resources to one or more path computation clients (PCCs). In addition, the technique enables the PCC to efficiently select a PCE (or set of PCEs) to service a path computation request based upon those available resources.

主权项

1. A method for efficiently selecting a path computation element (PCE) to compute a path between nodes of a computer network, the method comprising:
receiving, by a path computation client (PCC), a notification of a predictive response time (PRT) of one or more PCEs to a path computation request; selecting a PCE to service the path computation request and compute the path between nodes of the computer network, based on the PRT of the PCE; and receiving, by the PCC, a computed path between nodes of the computer network from the selected PCE.