Virtual network topology management for cross-layer provisioning in multi-layer networks

Future networks require virtual network topology management method using distributed PCEs for multi-layer multi-domain path computations. Once a path is established within a lower layer, it can be used as a data link in an upper layer and it can be advertised as a Traffic Engineering Link and exploited in the path computation by an upper layer. This paper presents cross-layer provisioning system architecture and procedures using inter-link and virtual link management methods over the multi-layer network.