METHOD AND SYSTEM FOR CONFIGURING A CONNECTION-ORIENTED PACKET NETWORK OVER A WAVELENGTH DIVISION MULTIPLEXED OPTICAL NETWORK

摘要

A network planning tool and method for configuring a connection-oriented packet network over a WDM optical network without an optical control layer, such as a SONET/SDH layer. The optical network includes a plurality of optical fibers interconnected through nodes and the connection-oriented packet network, such an Ethernet network, MPLS network, or pseudowire network, includes two or more terminal devices. The method and tool function by building an association between the components of the physical layer, such as the optical fiber, and their geographic location or path. The connection-oriented packet network is configured by building multi-link trunks (MLTs) between terminal devices, where the MLTs are built by aggregating lightpaths that traverse distinctive geographic paths. The MLTs are planned and configured through aggregating lightpaths that traverse incongruent sets of photonic elements. A predetermined target for resiliency to physical failure events may determine the degree of congruence allowed between the sets of photonic elements associated with lightpaths in the same MLT.

主权项

1. A connection-oriented packet network, configured over a wavelength division multiplexed (WDM) optical network, comprising:
a first terminal device; a second terminal device; a photonic layer providing a plurality of lightpaths between the first and second terminal devices, each lightpath traversing a set of photonic layer elements, at least one respective geographic locus being associated with each of the photonic layer elements; a multilink trunk defined between the first terminal device and the second terminal device; a first lightpath aggregated to the multilink trunk, the first lightpath traversing a first set of the photonic layer elements, the first set of photonic layer elements having a first set of associated geographic loci; and a second lightpath aggregated to the multilink trunk, the second lightpath traversing a second set of the photonic layer elements, the second set of photonic layer elements having a second set of associated geographic loci, the second set of geographic loci being different from the first set of geographic loci such that the first and second lightpaths are diversely routed.