Framework for Temporal Label Switched Path Tunnel Services

摘要

A T-SDN controller including a T-LSP manager, a temporal path element, a T-TED, a T-LDB, a T-LSPDB, and a network interface. The T-LSP receives a path request including time intervals and a set of constraints. The temporal path element obtains traffic engineering information and computes a path satisfying time intervals and a set of constraints. The T-TED reserves bandwidth corresponding to the path during the time intervals upon request by the T-LSP manager. The T-LDB reserves labels for the links during the time intervals upon request by the T-LSP manager. The T-LSPDB stores the time intervals, the set of constraints, the labels, and the bandwidth. The network interface permits the T-LSP manager to communicate with the nodes in the network to establish a temporal LSP along the path as computed.

主权项

1. A temporal software defined network (T-SDN) controller configured to manage a network containing a plurality of nodes connected by links, comprising:
a temporal label switched path (T-LSP) manager configured to receive a path request, wherein the path request includes time intervals and a set of constraints; a temporal path element operably coupled to the T-LSP manager, wherein the temporal path element is configured to:
receive the path request from the T-LSP manager;obtain traffic engineering information;compute a path satisfying the time intervals and the set of constraints based on the traffic engineering information obtained; andprovide the path as computed to the T-LSP manager; a temporal traffic engineering database (T-TED) operably coupled to the T-LSP manager and the temporal path element, wherein the T-TED is configured to:
provide the traffic engineering information to the temporal path element for use in computing the path upon request by the temporal path element; andreserve bandwidth corresponding to the path during the time intervals upon request by the T-LSP manager; a temporal label database (T-LDB) operably coupled to the T-LSP manager, wherein the T-LDB is configured to reserve labels for the links during the time intervals upon request by the T-LSP manager; a temporal LSP database (T-LSPDB) operably coupled to the T-LSP manager, wherein the T-LSPDB is configured to store the time intervals, the set of constraints, the labels, and the bandwidth; and a network interface operably coupled to the T-LSP manager, wherein the network interface permits the T-LSP manager to communicate with the nodes in the network to establish a temporal LSP along the path as computed.