Journal ArticleDOI
Optical layer survivability-an implementation perspective
Ori Gerstel,Rajiv Ramaswami +1 more
TLDR
The factors that affect the complexity of optical protection schemes, such as supporting mesh instead of ring protection, handling low-priority traffic, and dealing with multiple types of failures are discussed.Abstract:
This paper looks at several aspects of optical layer protection techniques from an implementation perspective. We discuss the factors that affect the complexity of optical protection schemes, such as supporting mesh instead of ring protection, handling low-priority traffic, and dealing with multiple types of failures. The paper also looks at how the client layer interacts with the optical layer with respect to protection, in terms of how client connections are mapped into the optical layer, and how protection schemes in both layers can work together in efficient ways. Finally, we describe several interesting optical protection implementations, focusing on the ones that are different from conventional SONET-like implementations.read more
Citations
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Routing, Flow, And Capacity Design In Communication And Computer Networks
Michal Pioro,Deepankar Medhi +1 more
TL;DR: Throughout, the authors focus on the traffic demands encountered in the real world of network design, and their generic approach allows problem formulations and solutions to be applied across the board to virtually any type of backbone communication or computer network.
Journal ArticleDOI
Survivable WDM mesh networks
TL;DR: In this paper, the authors examined different approaches to protect a mesh-based WDM optical network from such failures and proposed distributed protocols for path and link restoration, and formulated a model of protection-switching times for different protection schemes based on a fully distributed control network.
Journal ArticleDOI
Fault management in IP-over-WDM networks: WDM protection versus IP restoration
TL;DR: This paper considers an IP-over-WDM network in which network nodes employ optical crossconnects and IP routers, and formulate fault-management problems mathematically, develop heuristics to find efficient solutions in typical networks, and analyze their characteristics relative to each other.
Journal ArticleDOI
A review of fault management in WDM mesh networks: basic concepts and research challenges
Jing Zhang,B. Mukheriee +1 more
TL;DR: A framework for cost-effective availability-aware connection provisioning to provide differentiated services in WDM mesh networks is presented and the more realistic scenario of multiple near-simultaneous failures can be handled.
Journal ArticleDOI
Path-protection routing and wavelength assignment (RWA) in WDM mesh networks under duct-layer constraints
TL;DR: This study addresses the routing and wavelength-assignment problem in a network with path protection under duct-layer constraints in a wavelength-division multiplexing (WDM) network in which failures occur due to fiber cuts.
References
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Book
Optical Networks: A Practical Perspective
TL;DR: The second edition of Optical Networks: A Practical Perspective succeeds the first as the authoritative source for information on optical networking technologies and techniques as discussed by the authors, covering componentry and transmission in detail but also emphasizing the practical networking issues that affect organizations as they evaluate, deploy, or develop optical solutions.
Journal ArticleDOI
Survivable WDM mesh networks
TL;DR: In this paper, the authors examined different approaches to protect a mesh-based WDM optical network from such failures and proposed distributed protocols for path and link restoration, and formulated a model of protection-switching times for different protection schemes based on a fully distributed control network.
Journal ArticleDOI
End-to-end routing behavior in the Internet
TL;DR: It is found that Internet paths are heavily dominated by a single prevalent route, but that the time periods over which routes persist show wide variation, ranging from seconds up to days.
Proceedings ArticleDOI
Cycle-oriented distributed preconfiguration: ring-like speed with mesh-like capacity for self-planning network restoration
TL;DR: It is shown that through a strategy of pre-failure cross-connection between the spare links of a mesh network, it is possible to achieve 100% restoration with little, if any, additional spare capacity than in aMesh network.
Journal ArticleDOI
Multiprotocol lambda switching: combining MPLS traffic engineering control with optical crossconnects
D. Awduche,Yakov Rekhter +1 more
TL;DR: The proposed approach combines recent advances in MPLS traffic engineering control plane constructs with OXC technology to provide a framework for real-time provisioning of optical channels, foster development and deployment of a new class of OXCs, and allow the use of uniform semantics for network management and operations control in hybrid networks.