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Logical topology (2003)
| Citations: | 4 - 0 self |
BibTeX
@MISC{Shayman03logicaltopology,
author = {Mark Shayman and Kwang-il Lee and Lakshmi Sharmila and Sudarsan Overview},
title = {Logical topology},
year = {2003}
}
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Abstract
If IP is implemented over a reconfigurable WDM network, the logical links between routers can be changed in response to changes in traffic demands Traffic engineering in an MPLS/WDM network requires both logical topology design and LSP routing and provisioning – can be formulated as Mixed Integer Linear Program (MILP) (NP-complete) Standard approach – use heuristic for logical topology design – apply routing algorithm to map traffic demands onto logical topology New approach: Integrate LSP routing and provisioning into logical topology designLogical Topology Design Logical link between a pair of routers is formed by creating a lightpath between the nodes – Consists of sequence of fiber links together with selection of a wavelength in each fiber (RWA problem) – If no wavelength conversion, then RWA problem is subject to wavelength continuity constraint 2 Assume each router has 2 pairs of interfaces Assume at least 2 wavelengths per fiber
Keyphrases
logical topology logical topology design rwa problem lsp routing fiber link logical topology new approach traffic demand traffic engineering continuity constraint mpls wdm network node consists integrate lsp routing wavelength conversion reconfigurable wdm network standard approach use traffic demand interface assume logical link mixed integer linear program
