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2009 Sixth International Conference on Broadband Communications, Networks, and Systems. Broadnets 2009 (2009)
Madrid
Sept. 14, 2009 to Sept. 16, 2009
ISSN: 2150-4903
ISBN: 978-963-9799-49-3
pp: 1-7
V. S. Chava , Create-Net, Via Alla Cascata 56D, Trento, Italy 38100
E. Salvadori , Create-Net, Via Alla Cascata 56D, Trento, Italy 38100
A. Zanardi , Create-Net, Via Alla Cascata 56D, Trento, Italy 38100
G. Galimberti , Cisco Photonics, Via Philips 12, Monza, Italy 20052
G. Martinelli , Cisco Photonics, Via Philips 12, Monza, Italy 20052
R. Pastorelli , Cisco Photonics, Via Philips 12, Monza, Italy 20052
E. S. Vercelli , Cisco Photonics, Via Philips 12, Monza, Italy 20052
A. Tanzi , Cisco Photonics, Via Philips 12, Monza, Italy 20052
D. La Fauci , Cisco Photonics, Via Philips 12, Monza, Italy 20052
ABSTRACT
In GMPLS-based transparent optical networks, the switching and routing functionalities are performed in optical domain. However in these networks, physical layer impairments (PLIs) incurred by non-ideal transmission media accumulate along an optical path, and the overall effect determines the feasibility of lightpaths. Introducing transparency in optical layer reduces the possibility of GMPLS protocols interaction with optical layer at intermediate nodes along the path. Hence there is an urgent need to develop techniques that provide PLI information to GMPLS protocols and algorithms that efficiently utilize this information to realize dynamically reconfigurable GMPLS/WDM networks. We propose an optical control plane (OCP) architecture based on extensions to RSVP-TE, which is capable of handling both linear impairments (LIs) and non-linear impairments (NLIs). We propose a method to deal with the possible disruption of existing lightpaths because of excessive crosstalk introduced due to new lightpath setup. The simulation results suggest that OCP architectures to handle NLIs are important to avoid potential lightpath disruption.
INDEX TERMS
multiprotocol label switching, optical fibre networks, telecommunication network routing, telecommunication switching
CITATION

V. S. Chava et al., "Novel signalling based approach for handling linear and non-linear impairments in transparent optical networks," 2009 Sixth International Conference on Broadband Communications, Networks, and Systems. Broadnets 2009(BROADNETS), Madrid, 2009, pp. 1-7.
doi:10.4108/ICST.BROADNETS2009.7222
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