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W celu ochrony transmisji przed awarią węzłów/łączy wykorzystuje się alternatywne trasy transmisji. Jednakże złożoność obliczeniowa dostępnych algorytmów doboru tras rozłącznych często istotnie wstrzymuje producentów sprzętu od implementacji tychże rozwiązań. Przedstawiono nowe podejście do wyznaczania par rozłącznych tras, oparte na transformacji grafu sieci w metastrukturę. Wyniki badań dotyczące...
In this paper we evaluate the influence of the network topological characteristics on the extent of losses after attacks. For that purpose, we use the ATRF (attack-to-random failure) multiplier. Modeling results show that when using a standard metrics of distance in path computations, the number of connections broken due to attacks on irregular networks is significantly greater, compared to random...
In this paper we propose a class-based protection algorithm providing fast service recovery in WDM networks in case of a simultaneous failure of two network elements. We focus on providing various levels of service survivability in order to correspond to differentiated requirements of end-users. We show that assuring the service survivability in case of a double failure requires up to 40% more total...
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