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    Optical WDM networks and multicasting
    (CEUR-WS, 2013) Kirci, Pinar; Zaim, A. Halim
    Bandwidth usage increases day by day and the need for new technologies emerges for devoloping the efficiency. Wavelength Division Multiplexing (WDM) is the most spectacular one of these presented network technologies to be able to use optical fibers. In addition to that, multicasting the network traffic also draws attention for ensuring the growing traffic demand. In multicasting, the transmission is performed between the source node and many destination nodes. The packet delivery is not accomplished by flooding or sending the copies of the packets, thus bandwidth capacity is used as ideally as possible. The packet is sent by the source to the network and the network forwards it to the corresponding destinations. Thus, the number of video conferencing, internet based education and stock information distribution like multicast service based applications gradually increase, in time. This type of point to multipoint transmissions need huge amount of bandwidth in the network and also an effective technology that will meet that drawback. To address these issues in this paper, we present a new protocol structure for multicasting with Optical Burst Switching (OBS) on WDM networks. In addition to this, the simulations are performed over unicast and multicast transmissions which are compared on Just-In-Time (JIT) and Just Enough Time (JET) reservation protocols. Copyright © 2013 for the individual papers by the papers' authors.
  • Küçük Resim
    Öğe
    WDM Network And Multicasting Protocol Strategies
    (Hindawi Publishing Corporation, 2014) Kirci, Pinar; Zaim, Abdül Halim
    Optical technology gains extensive attention and ever increasing improvement because of the huge amount of network traffic caused by the growing number of internet users and their rising demands. However, with wavelength division multiplexing (WDM), it is easier to take the advantage of optical networks and optical burst switching (OBS) and to construct WDM networks with low delay rates and better data transparency these technologies are the best choices. Furthermore, multicasting in WDM is an urgent solution for bandwidth-intensive applications. In the paper, a new multicasting protocol with OBS is proposed. The protocol depends on a leaf initiated structure. The network is composed of source, ingress switches, intermediate switches, edge switches, and client nodes. The performance of the protocol is examined with Just Enough Time (JET) and Just In Time (JIT) reservation protocols. Also, the paper involves most of the recent advances about WDM multicasting in optical networks. WDM multicasting in optical networks is given as three common subtitles: Broadcast and-select networks, wavelength-routed networks, and OBS networks. Also, in the paper, multicast routing protocols are briefly summarized and optical burst switched WDM networks are investigated with the proposed multicast schemes.