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Network Virtualization (NV) realizes the decoupling of network infrastructure and network services. With the emergence of the Software Defined Network (SDN), it is easier to implement NV supporting dynamic heterogeneous underlay network. In this paper, we present and experimentally validate an Optical Network Virtualization (ONV) architecture based on OpenVirteX (OVX) supporting bandwidth on demand...
We study the problem of dynamic content replacement in terms of network state variation in elastic optical datacenter networks. A dynamic content replacement scheme is proposed to minimize spectrum consumption, blocking probability and network latency.
In this paper, we propose a light-tree based multicast flow aggregation (LT-MFA) scheme which can achieve the cost-efficient multicast service provisioning in elastic optical datacenter networks (EDONs). Moreover, a user-cover ratio based aggregation strategy is proposed for the LT-MFA scheme. An Integer Linear Program (ILP) model and a heuristic algorithm are developed to realize the LT-MFA scheme...
Optical interconnection provisioning in Data Center (DC) draws lots of interests thanks to its high bandwidth and power efficiency. Optical TDM connection is an alternative solution to enable port sharing but with guaranteed bandwidth. At the same time, since the throughput of traffic in DC is fluctuating through time, it is quite critical to adjust the TDM slot allocation dynamically according to...
Disaster, natural or man-made, is the main threaten of survivability and reliability of networks. The development of content connectivity provides a new way of protection against disaster to ensure the reliability of network service/content. This paper focuses on shared backup path protection based on content connectivity against disaster in the context of elastic optical datacenter networks. In this...
With the growth of cloud computing and data center (DC), data center networks (DCNs) is becoming an increasingly important part in the future networks. However, large-scale disasters are considered as the main problems in terms of network survivability. Therefore, we propose a data center recovery algorithm to protect the majority of customer service as soon as possible. This algorithm can maximize...
We construct k-regular and k-(edge)-connected structures for providing protection against multiple failures in optical transport networks. It improves the spare resources efficiency without increasing the complexity of design and implementation of protection mechanisms.
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