Using PCE as SDN controller

摘要

Embodiments relate generally to systems and methods for transitioning a system from a tradition network to a Software Defined Network (SDN) enabled network. In some embodiments, the systems and methods may comprise the use of a Path Computation Element (PCE) as a central controller. Smooth transition between traditional network and the new SDN enabled network, especially from a cost impact assessment perspective, may be accomplished using the existing PCE components from the current network to function as the central controller of the SDN network is one choice, which not only achieves the goal of having a centralized controller to provide the functionalities needed for the central controller, but also leverages the existing PCE network components.

主权项

1. A Path Computation Element (PCE) comprising:
a receiver configured to receive a path computation request from a path computation client (PCC), the path computation request requesting computation for a path from a head end node to a tail end node; a processor coupled to the receiver and configured to:
compute a path from the head end node to the tail end node in response to the path computation request; andassign a first Multiprotocol Label Switching (MPLS) label for a Software Defined Network (SDN) compatible node in the computed path, wherein the first MPLS label associated with to a label switched path (LSP) which traverses each node in the computed path; and a transmitter coupled to the processor and configured to transmit the first MPLS label directly to the SDN compatible node via PCE protocol (PCEP).