Intermediate-node initiated reservation (iir): a new signaling scheme for wavelength-routed networks

Lu, Kejie; Jue, Jason P.; Xiao, Gaoxi; Chlamtac, I.; Ozugur, T.

doi:10.1109/jsac.2003.816625

Cited by 37 publications

(4 citation statements)

References 14 publications

(22 reference statements)

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“…The most recent studies dealing with the routing inaccuracy problem can be found in [12][13][14][15][16][17][18][19][20][21]. The contributions in [12][13][14][15] evaluate the impact on the blocking probability because of selecting lightpaths under inaccurate routing information.…”

Section: Rwa and Prediction Based Routingmentioning

confidence: 99%

“…The proposed analytical models and the presented simulation results show that the blocking ratio increases in a fixed topology when routing is done under inaccurate information. To counteract this blocking effect, new RWA algorithms, able to tolerate inaccurate network state information have been proposed in [16][17][18][19].…”

Section: Rwa and Prediction Based Routingmentioning

confidence: 99%

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Prediction-based routing as RWA in multilayer traffic engineering

et al. 2011

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Multilayer traffic engineering (MLTE) allows coping with ever-increasing and varying traffic demands in IP-over-Optical multilayer networks. It utilizes cross-layer TE (Traffic Engineering) techniques to provision optical lightpath capacity to the IP/MPLS (Internet Protocol/ MultiProtocol Label Switching) logical topology on-demand. Such provisioning however causes optical connection arrival rates that pose strong performance requirements to Routing and Wavelength Assignment (RWA) strategies. Collecting up-to-date network information for the RWA with rapidly changing network states can be quite difficult. Exposing optical layer state information to the IP layer in the overlay model, or transforming this optical layer information in a workable representation in an integrated control plane is similarly problematic. Prediction-Based Routing (PBR) has been proposed as a RWA mechanism for optical transport networks; it bases routing not on possibly inaccurate or outdated network state, but instead on previous connections set-up. In this article, we propose to implement PBR as the RWA mechanism in the optical layer of a multilayer network, and use the predictive capabilities of PBR to expose dynamic optical network information into the multilayer traffic engineering algorithm with minimal control plane overhead. Some simulations show the benefits of using the PBR in the optical layer for MLTE purposes.

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Section: Rwa and Prediction Based Routingmentioning

confidence: 99%

Section: Rwa and Prediction Based Routingmentioning

confidence: 99%

Prediction-based routing as RWA in multilayer traffic engineering

et al. 2011

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“…In [11,12], re-routing operations are activated once there is an outdated information-caused blocking. In [13], a scheme called intermediate-node initiated reservation is proposed for networks with sparse wavelength conversion. The main idea is to initialize the reservation operations on those nodes with wavelength conversion, before the connection request reaches the destination node, so that the chance of having outdated information is lowered.…”

mentioning

confidence: 99%

“…A closer look at these existing results shows that they are either for the case with only global information flooding where lightpath establishment decisions are made based on flooded information (e.g., [6,10,15,16]) or for the case with only local link-state information exchange (e.g., [7][8][9][11][12][13][14]). In this article, we study a different case where global information flooding and local information exchange co-exist in the same network that enables dynamic routing and wavelength assignment.…”

mentioning

confidence: 99%

On the performance of distributed lightpath provisioning with dynamic routing and wavelength assignment

2008

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Distributed lightpath provisioning in wavelength-division multiplexing (WDM) networks has gained wide research interests. In this article, we study the performance of distributed lightpath provisioning in WDM networks with dynamic routing and wavelength assignment (RWA). Specifically, we consider the case where routing of each lightpath is calculated based on globally flooded link-state information, and wavelength assignment is decided through local information exchanges. Simulation results show that such schemes steadily outperform those schemes with only global flooding or only local information exchanges. More significantly, the impacts of various factors on the proposed scheme, including RWA algorithm, network topology, number of wavelengths per fiber, global flooding interval, and traffic load, have been evaluated. Such evaluations help to achieve some insights useful for the future developments of efficient lightpath provisioning schemes.

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Analyses of soft‐state signaling protocols in GMPLS‐Based WDM networks

2012

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SUMMARY Wavelength‐routed Generalized Multi‐Protocol Label Switching (GMPLS) networks use Resource reSerVation Protocol—Traffic Engineering (RSVP‐TE) as signaling protocol to set up and tear down lightpaths. RSVP‐TE uses a soft‐state control mechanism to manage lightpaths. In the soft‐state control mechanism, each node sets a timer for each control state and resets the timer with refresh messages to maintain the state. When the timer expires due to losses of refresh messages, the control state is initialized and a reserved resource managed with the state is released. It has been considered that resource utilization of soft‐state protocols is inferior to that of hard‐state protocols, since soft‐state protocols may reserve resources until control states are deleted due to timeout. Therefore, some extensions to promote the performance of soft‐state protocols, such as message retransmission, have been considered. In this paper, we analyze the behavior of GMPLS RSVP‐TE and its variants with a Markov model and analyze the performance of RSVP‐TE. From the results, we demonstrate that resource utilization of RSVP‐TE can be equivalent to that of a hard‐state protocol when the loss probability of signaling messages is low. We also investigate the effectiveness of message retransmission and show that using message retransmission leads to poor resource utilization in some cases. Copyright © 2012 John Wiley & Sons, Ltd.

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Intermediate-node initiated reservation (iir): a new signaling scheme for wavelength-routed networks

Cited by 37 publications

References 14 publications

Prediction-based routing as RWA in multilayer traffic engineering

Prediction-based routing as RWA in multilayer traffic engineering

On the performance of distributed lightpath provisioning with dynamic routing and wavelength assignment

Analyses of soft‐state signaling protocols in GMPLS‐Based WDM networks

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