Economic Analysis of IP/Optical Network Architectures
Source: AT&T Labs-Research
A Re-configurable Optical Network (RON) potentially offers service providers opportunities to optimize their IP network architectures. Large IP backbones are typically deployed directly over point-to-point DWDM systems. However, there is interest in using an opaque RON to provide the connectivity (links) between IP routers. Authors define an opaque RON as a network of cross-connects - with either optical or electrical fabrics surrounded by optical transponders that do O-E-O regeneration and wavelength conversion. A RON can provide rapid provisioning that can be used to respond to changes in IP traffic demands and fast restoration of IP link failures. As a result, there has been a great deal of research in IP over RON design, feasibility, routing algorithms, restoration schemes, and network management / control protocols.