Protocols and architectures for IP optical networking

Anderson, Jon; Manchester, J.; Rodriguez-Moral, A.; Veeraraghavan, Malathi

doi:10.1002/bltj.2149

Cited by 40 publications

(18 citation statements)

References 19 publications

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“…We used the 21-node, 26 bidirectional-link ARPA-2 network topology shown in Figure 2 for simulations. The source and destination nodes of the RLDs are drawn according to a random uniform distribution in the interval [1,21]. We assume that RLDs arrive at the network randomly according to a Poisson process with common arrival rate r and once accepted, will hold the circuits for exponentially distributed times with mean holding time equal to 1 much larger than the network-wide propagation delay and the connection set-up delay.…”

Section: Simulations Resultsmentioning

confidence: 99%

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A new intentional lightpath rerouting scheme for dynamic traffic in WDM all-optical networks

2013

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One limitation of a WDM all-optical network is the wavelength continuity constraint imposed by the all-optical cross-connect switches which do not allow a circuit to be placed on a non wavelength-continuous route. This constraint leads to inefficient utilization of wavelength channels and results in higher blocking probability. Rerouting is an effective approach that can increase the efficiency. In this paper, we employ intentional rerouting approach to improve the network utilization efficiency under dynamic traffic model. Intentional lightpath rerouting is to intentionally reroute already established lightpaths during their life period without affecting other existing lightpaths, so as to achieve a better blocking performance. The proposed intentional rerouting algorithm, namely, Intentional Move To Vacant Shorter Path (I-MTVSP) initiates the rerouting procedure when a connection leaves and its lightpath is hence released. Already established lightpaths that can be set up on a new vacant shorter path are selected to be rerouted. An existing lightpath can be rerouted only once during its life period, so as to reduce the service disruption period due to rerouting. Simulation results show that our proposed intentional lightpath rerouting algorithm improves significantly the rejection ratio when keeping a short service disruption period.

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Section: Simulations Resultsmentioning

confidence: 99%

“…Wavelength division multiplexing (WDM) optical networks are widely used for long-distance communications nowadays [1]. In a WDM network, an optical communication path, referred to as lightpath is set up between a source node and a destination node upon the reception of a new connection request from the clients [2].…”

Section: Introductionmentioning

confidence: 99%

A new intentional lightpath rerouting scheme for dynamic traffic in WDM all-optical networks

2013

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“…Traffic may be packet or circuit data and is transported over optical links. This method differs significantly from that of using SONIET/SDH in the following two ways: first, it does not require as much transmission overhead as in SONET/SDH [4]. Secondly, it allows signaling to be used in the establishment of paths between end points, in addition to allowing the transport of heterogeneous traffic.…”

Section: Introductionmentioning

confidence: 92%

<title>Heterogeneous traffic transport over optical networks</title>

Sohraby¹,

Morreale

Fatehi³

et al. 2000

OptiComm 2000: Optical Networking and Communications

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As all-optical networks emerge as the high-speed networking standard, the performance of optical networks for mixed traffic requires investigation. Currently, traffic on optical networks varies from monomedia or one type of session only, to multimedia, in which multiple monomedia sessions are presented as one multimedia session. Today's internet offers elementary examples of this, with modest video and audio clips accompanying data. The performance of multimedia sessions over optical networks has not met with user expectations, primarily due to network latency as a result of the underlying protocols in the network infrastructure. This protocol incompatibility has the most significant impact on multimedia IP traffic on optical networks. In this paper, a new structure for the transport of dissimilar packet and non-packet information over optical networks is presented. The use of edge devices permits the establishment of wavelengths between end points, which allows signaling to accompany multimedia transport. The use of "intelligence at the edge" of the network for processing results in less transmission overhead with this structure than is found in other methods. Several illustrations of the utility of this method are presented, and the impact on Quality of Service (QoS) is assessed.

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“…The typical approach to routing LSPs is to separate the routing at each layer, i.e., routing at the IP/MPLS layer is independent of routing of wavelengths at the optical layer [1,2]. Wavelength-routing at the optical layer is used to set-up a quasi-static logical topology which is then used at the IP layer for IP routing.…”

Section: Introductionmentioning

confidence: 99%

Dynamic link load balancing based integrated routing algorithm in IP-over-WDM networks

Zhang

Zeng

et al. 2004

Network Architectures, Management, and Applications

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Integrated routing is a routing approach to support the peer interconnection model in IP over WDM networks. To have a better network link load distribution and network usage in IP over WDM networks, in which network nodes may have the ability to handle traffic in fine granularities, it is important to take into account the combined routing at the IP and WDM layers. Based upon this, this paper develops an algorithm for integrated dynamic routing of bandwidth guaranteed paths in IP over WDM networks. For newly dynamic arriving requests, as the developed algorithm takes into account the combined topology and resource usage information at the IP and WDM layers, and the routing procedure makes full use of the statistic information of the users' bandwidth requirement and considers carefully both the routing cost and the corresponding length of the routing path, thus a better link load balancing and network usage can be achieved. Simulation results show that the developed scheme performs well in terms of performance metrics such as the number of rejected demands and the network link load balancing.

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Protocols and architectures for IP optical networking

Cited by 40 publications

References 19 publications

A new intentional lightpath rerouting scheme for dynamic traffic in WDM all-optical networks

A new intentional lightpath rerouting scheme for dynamic traffic in WDM all-optical networks

<title>Heterogeneous traffic transport over optical networks</title>

Dynamic link load balancing based integrated routing algorithm in IP-over-WDM networks

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