Preplanned restoration of multicast demands in optical networks

Péter Soproni, Tibor Cinkler

Research output: Contribution to journalArticle

1 Citation (Scopus)


The evolution of multicast applications has speeded up. providers have to offer cheap and reliable services for their customers. One way to achieve this is to use a restoration method that provides relatively fast restoration calculated upon a failure, where nearly the minimal amount of resources is allocated. In this paper we propose a new, faster way of restoring multicast demands after link failure that is based on preplaning. We prove its optimality if a few preconditions hold. To do so a new formalization of the wavelength graph transformation (WGT) is presented. We show, based on simulations, that the beneficial properties of our method hold even when one or more preconditions are not kept.

Original languageEnglish
Pages (from-to)1847-1861
Number of pages15
JournalComputer Networks
Issue number6
Publication statusPublished - Apr 19 2012



  • Multicast
  • Optical network
  • Restoration
  • Wavelength graph

ASJC Scopus subject areas

  • Computer Networks and Communications

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