Availability comparison of opaque and translucent networks

Conference: networks 2006 - 12th International Telecommunications Network Strategy and Planning - Symposium
11/06/2006 - 11/09/2006 at New Delhi, India

Proceedings: networks 2006

Pages: 6Language: englishTyp: PDF

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Morea, Annalisa; Heard, Isabelle Boyer (France Télécom R&D, 2 avenue Pierre Marzin, 22307 Lannion Cedex, France)

In this paper, port unavailability and annualized return rate relating to opaque and translucent optical networks are reported for unprotected and 1+1 protected connections. For translucent networks, three representative conditions in terms of traveled kilometers – km – and traversed nodes – N – are described. For the node architectures, the traffic matrix and the failure rates considered in this study, translucent networks are more interesting than opaque ones from availability and reliability point of view. The benefit in terms of unavailability is on average 17%; concerning the expected number of failures, the gain is on average 19%.