PLANNING AND IMPLEMENTING RELIABLE IP OVER WDM OPTICAL NETWORKS

Planning Reliable IPO DIT-PRJ-05-007

Status NOT active project
DISI role Partner
Project type Research Project
Dimension International
Acquisition date 2005-01-17
Start date 2004-01-01
End date 2007-12-31

Project details

Project astract Resource provisioning and reliability issues in IP/MPLS over WDM networks are main problems to be faced when a communication paradigm that ensures Quality of Service (QoS) is employed. At the same time, traffic engineering in IP/MPLS networks is an important topic of research strictly connected with the reliability issues. As a matter of fact, the problem of resilient provisioning in IP/MPLS over WDM networks is an object of great interest in the research community [INFOCOM99]. At the WDM level, resource provisioning in wavelength routed networks is realized by the establishment of an all-optical connection, i.e., a lightpath. The allocation of a lightpath requires to solve the problem of selecting a suitable path (routing) and the problem of allocating an available wavelength for the connection (wavelength assignment). The resulting problem is referred to as the routing and wavelength assignment (RWA) problem [Mukerjee00]. Network performance depends on the RWA problem solution that in turn is affected by network element capabilities. Network nodes are typically switching elements, e.g., optical or wavelength cross-connect (OXC and WXC, respectively) that all-optically connect input wavelengths to output wavelengths (pass-through lightpaths). In addition they are equipped with a finite number of transponders accepting traffic of tributaries at a fixed wavelength (typically in the second window) for ignition in the WDM trunks at a transponder-specific wavelength (typically in the third window). At the IP/MPLS layer, resource provisioning is done traditionally by the allocation of label switched paths (LSPs) over the optical pipes, using the so-called overlay model. No co-ordination is practically envisioned between WDM and IP layer and we believe that the integrated multilayer approach deserves investigation within the context of the present project.
Keywords IP, IPO, WDM, Optical Networks
Fundings 0 €
Partners
  • DIT - UniTN
  • Scuola Superiore Sant'Anna
  • Budapest University of Technology and Economics
  • Politecnico di Torino
  • University of West Hungary

DISI Sub-project details

Keywords IP, IPO, Optical Netowrks, Planning, Provizioning, Reliability
Fundings 0 €
Manager Renato Antonio Lo Cigno
Participating RP