IP restoration vs. optical protection: Which one has the least bandwidth requirements?

Jaumard, Brigitte; Bùi, Minh N.; Mukherjee, Biswanath; Vadrevu, Chaitanya S. K.

doi:10.1016/j.osn.2013.02.001

Cited by 8 publications

(6 citation statements)

References 28 publications

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“…In the second case, after detecting a fault a solution to recover the affected connection is searched for, and the necessary resources are then allocated to restore the affected services. Protection has higher cost, but strict recovery time, and is the preferred solution at the optical layer [13]. Restoration is more bandwidth efficient than protection, as it makes better use of network resources.…”

Section: Literature Review Of Resilient Routing Issuesmentioning

confidence: 99%

“…Survivability is of the utmost importance in this type of networks, because of the huge amount of traffic carried in a single light-path. The most common approach is to consider protection at the WDM layer or in alternative at the IP layer [13]. Depending on a failure scenario and a traffic pattern it may be more advantageous (considering backup capacity) to ensure protection at the optical layer in some cases, and in other cases to ensure recovery at the IP layer.…”

Section: Literature Review Of Resilient Routing Issuesmentioning

confidence: 99%

“…Depending on a failure scenario and a traffic pattern it may be more advantageous (considering backup capacity) to ensure protection at the optical layer in some cases, and in other cases to ensure recovery at the IP layer. In [13] the bandwidth requirements of IP restoration versus optical protection for a given class of services is analyzed and a combination of both recovery types is also considered. Zhang et al [32] study how to maximize the bandwidth sharing for survivable IP/MPLS over WDM, and propose a new scheme for resource sharing, which is more effective than two other alternatives.…”

Section: Literature Review Of Resilient Routing Issuesmentioning

confidence: 99%

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Resilient arcs and node disjointness in diverse routing

Gomes

Żotkiewicz

2014

Optical Switching and Networking

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In multi-layer networks protection can be provided at multiple layers. Hence some links at an upper layer may be resilient because they are protected at a lower layer. We will designate as resilient arc at a given layer, an arc which has some form of protection at an underlaying layer. When path diversity is used at an upper layer, and resilient arcs are taken into account, it may not be necessary for the considered paths to be fully disjoint.We solve a problem of finding the shortest node-disjoint pair of paths that can share resilient arcs. It is assumed that a network consists of a set of nodes and a set of arcs. Moreover, a number of available arcs are resilient. Our goal is to find the shortest pair of paths such that they share only those nodes that are incident to shared resilient arcs. Moreover, we assume that the resulting paths cannot contain loops, and costs of shared resilient arcs are counted only once towards the objective function.In the paper we present two novel algorithms solving the above problem, and two supporting algorithms that are utilized as subroutines. We implement the proposed algorithms and compare them to an MIP approach.

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Section: Literature Review Of Resilient Routing Issuesmentioning

confidence: 99%

Section: Literature Review Of Resilient Routing Issuesmentioning

confidence: 99%

Section: Literature Review Of Resilient Routing Issuesmentioning

confidence: 99%

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Resilient arcs and node disjointness in diverse routing

Gomes

Żotkiewicz

2014

Optical Switching and Networking

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“…Furthermore, those authors also point out that other work treats optimization of (i) routing cloud service requests and (ii) mapping a VNet to the physical infrastructure separately. In the problem of survivable VNet embedding, [7] and [8] consider that the VNet is already designed and given, while in [9], [10], the authors build the most bandwidth efficient resilient VNet, under unicast traffic assumptions and using either single or multiple hop routing of requests in the virtual network. In proposing solutions for optimal server selection, as well as physical layer routing of anycast services for intra-and inter-DC networks, the resilience of the resulting virtual layer design is not considered by [11], [12].…”

Section: Related Workmentioning

confidence: 99%

Resilience options for provisioning anycast cloud services with virtual optical networks

Bùi

Jaumard

Develder

2014

2014 IEEE International Conference on Communications (ICC)

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Abstract-Optical networks are crucial to support increasingly demanding cloud services. Delivering the requested quality of services (in particular latency) is key to successfully provisioning end-to-end services in clouds. Therefore, as for traditional optical network services, it is of utter importance to guarantee that clouds are resilient to any failure of either network infrastructure (links and/or nodes) or data centers. A crucial concept in establishing cloud services is that of network virtualization: the physical infrastructure is logically partitioned in separate virtual networks. To guarantee end-to-end resilience for cloud services in such a set-up, we need to simultaneously route the services and map the virtual network, in such a way that an alternate routing in case of physical resource failures is always available. Note that combined control of the network and data center resources is exploited, and the anycast routing concept applies: we can choose the data center to provide server resources requested by the customer to optimize resource usage and/or resiliency. This paper investigates the design of scalable optimization models to perform the virtual network mapping resiliently. We compare various resilience options, and analyze their compromise between bandwidth requirements and resiliency quality.

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“…Due to the tremendous bandwidth carried by a fiber in these networks, network failure (e.g., a fiber cut or an in-line amplifier failure) can cause huge data loss. Hence, efficient protection of data plays a critical role in WDM mesh networks and optical protection is the most efficient scheme in terms of resource consumption [3].…”

Section: Introductionmentioning

confidence: 99%