Performance evaluation of survivable multifiber WDM network
نویسندگان
چکیده
This article proposes a survivability evaluation model for multifiber WDM networks, in which the extended layered graph is developed to jointly optimize the wavelength routing and wavelength assignment problems, and three different edge cost functions are evaluated in terms of traffic engineering. Linear programming (LP) equations are formulated to optimally determine the working lightpath and the corresponding protection lightpath under the schemes of shared protection and dedicated protection. The extensive simulations show that shared protection with the fiber and wavelength-based cost function provides the best survivability.
منابع مشابه
Maximizing the Number of Connections in Multifiber WDM Chain, Ring and Star Networks
We study a wavelength assignment maximization problem in multifiber WDM networks. Given a network G, a set of requests, the number of fibers per link and the number of wavelengths, we want to maximize the number of requests that can be satisfied simultaneously. We propose polynomial time algorithms, that are either optimal or have a guaranteed worst case performance in basic topologies, such as...
متن کاملReliability evaluation of wdm networks with link capacity and hop constraints
A reliability evaluation module is presented for study of WDM network reliability. In this module, WDM networks are assumed to consist of three kinds of network elements nodes, links and wavelength channelrelated elements. And a network performance index – network ‘function value’, was introduced here as a quantitative representation of working-state of WDM network under certain link capacity a...
متن کاملDynamic Routing and Wavelength Assignment in Multifiber WDM Networks with Wavelength Conversion Capability
This paper proposes a dynamic routing and wavelength assignment (RWA) scheme in multifiber WDM networks with wavelength conversion capability. In multifiber WDM networks, each link consists of multiple fibers. Thus, multiple lightpaths with the same wavelength can be established in the same link as long as they use different fibers. In WDM networks with wavelength conversion, the network nodes ...
متن کاملBounds for Energy-Efficient Survivable IP Over WDM Networks With Network Coding
In this work we establish analytic bounds for the energy efficiency of the 1+1 survivable IP over WDM networks using network coding. The analytic bounds are shown to be in close agreement with our previously reported results. They provide verification of the MILP and heuristics proposed previously and an efficient, compact means of evaluating the network results, and allow the performance of la...
متن کاملSurvivable IP Over WDM: Guaranteeing Minimum Network Bandwidth
A novel survivable IP over WDM network design problem is proposed. The IP network uses lightpath services of the WDM network to implement its IP links. The WDM network can provide unprotected and protected lightpaths, as well as a new lightpath service referred to as survivable pair. The IP network must support two traffic matrices, one under normal conditions and the other whenever there is a ...
متن کامل