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Efficiency of information update strategies for automatically switched multi-domain optical networks

Efficiency of information update strategies for automatically switched multi-domain optical networks,10.1109/ICTON.2005.1505840,J. Szigeti,I. Ballok,T

Efficiency of information update strategies for automatically switched multi-domain optical networks   (Citations: 6)
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The routing and wavelength assignment algorithm is a complex task in today's dynamically switched networks. As the number of network nodes and links increases, advertising link states requires more control messages, larger databases and more processing capacity while searching for an available path. Information aggregation in multi-domain networks helps us to reduce the number of advertised links. Furthermore, there are numerous information update strategies that also result in less link state control messages. However, these enhancements are done on the account of information inaccuracy, which leads to higher blocking ratio and longer setup delays. In our article we present a physical device abstraction layer for the control plane where interior optical switches having different multiplexing capabilities and exterior autonomous domains are treated in a unified way. Next we show and analyse solutions for how to apply information update strategies on multilayer networks and how to extend these strategies to fit into multi-domain environment.
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    • ...With regards to the scalability issue, [11] proposed an efficient information aggregation and updating system for large scale networks...

    Xiaolan J. Zhanget al. Resource provisioning for dynamic multi-domain WDM networks: Effective...

    • ...Generally, the RWA computing complexity can be evaluated by considering the number of entries required in the RWA table for each node [5, 7]. For an N-node flat WDM network with W wavelengths in each link, the computing complexity is W ∗ N 2 . If we construct...

    I.-Hsuan Penget al. A connectivity-based approach for the construction of hierarchical WDM...

    • ...If the LSA is delayed by any information update strategy [7][8], it may occur, that the next connection { as the decision is based on stalled information { is routed via an already used O/E port (Fig. 2.b) and its SETUP will fail (Fig 2.c) even though there are plenty of other available O/E ports in the OXC...
    • ...Although eorts were made to reduce the amount of advertised LSA messages while keeping the same level of accuracy in the network view [8], these intra-OXC aggregations are still redundant and do not provide a general solution for any type of OXC...

    János Szigetiet al. Rule-Based Advertisement and Maintenance of Network State Information ...

    • ...The latency and accuracy of data updates, the issue of information hiding, the impact of distributed resource reservation and others, are related issues of interest, as also reflected in recently published studies, e.g., [31]...

    Slobodanka Tomic. Control Plane Support

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