Autor: Piet Demeester, Mario Pickavet, Pim Van Heuven, Steven Van den Berghe, Ilse Lievens, Didier Colle, Chris Develder
Rok vydání: 2001
Předmět:
Zdroj: Photonic Network Communications. 3:23-40
ISSN: 1387-974X
DOI: 10.1023/a:1011479509986
Popis: Due to the fast increase of Internet traffic and the enormous bandwidth potential of all-optical transport networks based on wavelength division multiplexing, an IP-over-WDM network scenario is likely to be widespread in future communication networks. At the same time, IP networks are becoming more and more mission-critical. Hence, it is of paramount importance for IP-over-WDM networks to be able to recover quickly from frequently occurring network failures. This paper explains how multi-protocol label switching (both electrical and optical) recovery mechanisms can be important to reach that goal. Moreover, a novel MPLS recovery mechanism called fast topology-driven constrained-based rerouting is presented. Different MPLS recovery mechanisms are compared to each other. Special attention hereby goes to the additional capacity that is required to recover from frequently occurring failures.
Databáze: OpenAIRE