M. Kodialam and T. V. Lakshman, "Integrated dynamic IP and wavelength routing in IP over WDM networks," in Proc. INFOCOM, 2001.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....the different domains on the service provider network. Consequently, integrated cross domain routing that incorporates traffic and topology information from both IP and optical domains in the path selection process, has started to receive serious attention for MPLS traffic engineering [1] [2], 3] Also referred to as MPLS over WDM, the goal of cross domain routing of MPLS traffic is to create a more efficient end to end network by discovering bandwidth that would be wasted if each domain were routed independently. In the next section, we provide a simple example of cross domain ....

....that highlights the impact of IP subnets on WDM mesh networks. We focus on the problem of finding bandwidth guaranteed end to end paths in the WDM mesh model. We formally prove that finding the shortest IP hop path, admitting polynomial solutions on the WDM mesh network in the absence of subnets [2], 8] is NP hard in the presence of subnets. We In this paper, we use the word domain interchangeably with layer to refer to technology domains (IP, SONET, ATM etc. because of their one to one relationship with network layers. IPv6 does not enforce this constraint. 6] Appears in the ....

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M. Kodialam and T. V. Lakshman, "Integrated Dynamic IP and Wavelength Routing in IP over WDM Networks," IEEE infocom, 2001.

.... extent due to various transmission impairments (e.g. attenuation, crosstalk, dispersion, nonlinearities) MPLS over WDM (and IP over WDM) networks are gaining significant attention due to the efficiency in resource utilization that can be achieved by jointly considering the two network layers [6] [7] [8] These networks are configured by defining lightpaths at the optical layer and LSPs at the packet layer. Lightpaths are routed over the physical network (comprising OXCs connected through optical fibers) and LSPs are routed over the logical topology of lightpaths (the virtual optical ....

M. Kodialam and T.V. Lakshman, "integrated Dynamic IP and Wavelength Routing in IP over WDM Networks", Proceedings oflEEE INFOCOM 2001.

....for the design of the virtual topology. Heuristics for the design of virtual topologies, based on greedy principles [18] or on linear programming [8] have been recently discussed. Routing that takes into account the combined topology and resource usage information at the IP and optical layers [7], with constraints on the maximum delay or number of hops, is an area that deserves additional exploration. Paper [23] investigates distributed control mechanisms for establishing all optical con nections in a wavelength routed WDM network: an approach based on link state routing, and one based ....

....control mechanisms for establishing all optical con nections in a wavelength routed WDM network: an approach based on link state routing, and one based on distance vector routing. A novel algorithm for inte grated dynamic routing of bandwidth guaranteed paths in MP S networks is developed in [7]. Another fundamental issue when designing network algorithms is their ability to function with the limitations of a distributed environment, i.e. local and delayed information. Work [11] considers the case in which nodes ex plore a limited portion of the search space by considering only a ....

[Article contains additional citation context not shown here]

M. Kodialam and T. V. Lakshman. Integrated dynamic IP and wavelength routing in IP over WDM networks. In Infocorn 2001.

....the different domains on the service provider network. Consequently, integrated cross domain routing that incorporates traffic and topology information from both IP and optical domains in the path selection process, has started to receive serious attention for MPLS traffic engineering [1] [2], 3] Also referred to as MPLS over WDM, the goal of cross domain routing of MPLS traffic is to create a more efficient end to end network by discovering bandwidth that would be wasted if each domain were routed independently. In the next section, we provide a simple example of cross domain ....

....that highlights the impact of IP subnets on WDM mesh networks. We focus on the problem of finding bandwidth guaranteed end to end paths in the WDM mesh model. We formally prove that finding the shortest IP hop path, admitting polynomial solutions on the WDM mesh network in the absence of subnets [2], 8] is NP hard in the presence of subnets.We In this paper, we use the word domain interchangeably with layer to refer to technology domains (IP, SONET, ATM etc. because of their one to one relationship with network layers. IPv6 does not enforce this constraint. 6] R2 R3 R4 O1 O2 ....

[Article contains additional citation context not shown here]

M. Kodialam and T. V. Lakshman, "Integrated Dynamic IP and Wavelength Routing in IP over WDM Networks," IEEE infocom, 2001.

....for the design of the virtual topology. Heuristics for the design of virtual topologies, based on greedy principles [18] or on linear programming [8] have been recently discussed. Routing that takes into account the combined topology and resource usage information at the IP and optical layers [7], with constraints on the maximum delay or number of hops, is an area that deserves additional exploration. Paper [23] investigates distributed control mechanisms for establishing all optical connections in a wavelength routed WDM network: an approach based on link state routing, and one based on ....

....control mechanisms for establishing all optical connections in a wavelength routed WDM network: an approach based on link state routing, and one based on distance vector routing. A novel algorithm for integrated dynamic routing of bandwidth guaranteed paths in MP#S networks is developed in [7]. Another fundamental issue when designing network algorithms is their ability to function with the limitations of a distributed environment, i.e. local and delayed information. Work [11] considers the case in which nodes explore a limited portion of the search space by considering only a certain ....

[Article contains additional citation context not shown here]

M. Kodialam and T. V. Lakshman. Integrated dynamic IP and wavelength routing in IP over WDM networks. In Infocom 2001.

.... context is that of dynamic lightpath establishment in wavelengthrouted networks reviewed in [14] We therefore assume a mechanism to assign resources to connection requests, that must be able to select routes, assign wavelengths and configure the appropriate logical switches, see also [3] for integrated IP and wavelength routing and [6] for a blocking analysis in the context of destination initiated reservation. This paper describes a preliminary investigation on protocols that consider IP like routing strategies, where the next hop at a given node is decided only by the ....

M. Kodialam and T. V. Lakshman. Integrated dynamic IP and wavelength routing in IP over WDM networks. In Proceedings of IEEE INFOCOM 2001.

....for the design of the virtual topology. Heuristics for the design of virtual topologies, based on greedy principles [17] or on linear programming [7] have been recently discussed. Routing that takes into account the combined topology and resource usage information at the IP and optical layers [6], with constraints on the maximum delay or number of hops, is an area that deserves additional exploration. 22] investigates distributed control mechanisms for establishing all optical connections in a wavelength routed WDM network: an approach based on link state routing, and one based on ....

....control mechanisms for establishing all optical connections in a wavelength routed WDM network: an approach based on link state routing, and one based on distance vector routing. A novel algorithm for integrated dynamic routing of bandwidth guaranteed paths in MP S networks is developed in [6]. Another fundamental issue when designing network algorithms is their ability to function with the limitations of a distributed environment, i.e. local and delayed information; work [10] considers the case in which nodes explore a limited portion of the search space by considering only a certain ....

[Article contains additional citation context not shown here]

M. Kodialam and T. V. Lakshman. Integrated dynamic IP and wavelength routing in IP over WDM networks. In Proceedings of IEEE Infocom

....as reduce the cost of spare resources. For example, the resource aggregation fault tolerance (RAFT) scheme for RSVP based IntServ services was developed by Dovrolis and Ramanathan [5] and Sharing with Partial Information (SPI) for IP MPLS networks was proposed by Kodialam and Lakshman [6] 7] [8]. These schemes focus on protecting working traffic by reserving spare bandwidth in backup paths. Though network redundancy is reduced to some degree by sharing spare capacity in these schemes, our recent results [1] have shown that total spare capacity can be reduced to near minimum by using a ....

M. Kodialam and T.V. Lakshman, "Integrated dynamic IP and wavelength routing in IP over WDM networks," in Proceeding of IEEE INFOCOM, Apr. 2001.

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M. Kodialam and T. V. Lakshman, "Integrated dynamic IP and wavelength routing in IP over WDM networks," in Proc. INFOCOM, 2001.

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M. Kodialam and T. V. Lakshman, "Integrated Dynamic IP and Wavelength Routing in IP over WDM Networks", Infocom 2001.

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M. Kodialam and T. V. Lakshman, "Integrated dynamic IP and wavelength routing in IP over WDM networks," in Proceedings of IEEE INFOCOM 2001.

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M. Kodialam and T.V. Lakshman. Integrated Dynamic IP and Wavelength Routing in IP over WDM Networks. In Proceedings of INFOCOM, volume 1, pages 358 --366, Anchorage - Alaska, 2001.

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M. Kodialam and T.V. Lakshman. Integrated Dynamic IP and Wavelength Routing in IP over WDM Networks. In Proceedings of INFOCOM, volume 1, pages 358 --366, Anchorage - Alaska, 2001.

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