Efficient Virtual Network Embedding of Cloud-Based Data Center Networks into Optical Networks

With the rise of cloud computing technology, the whole information technology industry has undergone dramatic changes. Large-scale computing and the growing demand for computing power from large data have made it impossible for traditional data center network topology construction methods and network layer operation control methods with good stability to meet the requirements of technological development. The topology of a data center network is usually characterized as an undirected graph, and graph algorithms are used to implement communication patterns in complex network structures. However, the routing algorithms proposed earlier for graphs cannot be applied to all topological graphs. Based on the comprehensive interactive trust evaluation network security model, this study analyzes the advantages and disadvantages of relevant algorithms and proposes a fault-tolerant routing algorithm suitable for all networks. The algorithm can dynamically call different algorithms according to the number of current nodes and links. From the simulation results, it can be found that the algorithm not only improves the accuracy and fault tolerance but also effectively reduces the loss of time and memory.

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“…For a fixed source node and destination node, the dynamic factor cannot be modified. Some routing performance may be degraded [35][36][37].…”

Section: Discussionmentioning

confidence: 99%

Fault-Tolerant Secure Routing Based on Trust Evaluation Model in Data Center Networks

Liu

Fan

et al. 2022

Security and Communication Networks

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“…To assess the performance of the designed algorithm, BiVNE, we compare it with three existing VNE algorithms: Greedy-SP-FF [23], LRC-SP-FF [94], and PL-KSP-FF [35]. Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, these studies lack the consideration of optical link characteristics. Regarding optical networks, some efforts have been made to avoid optical spectrum fragmentation [33][34][35]. A common work in this studies is that a parameter related to the utilization of the optical spectrum is first defined, and then this parameter is used to guide the VNE process.…”

Section: Introductionmentioning

confidence: 99%

“…After seeking the proper PNs by greedily using the matching factor, the virtual link embedding (VLiE) is conducted to find an available path in which the difference between the size of the selected spectrum block and that being requested is the smallest. In [35], a VNE method that utilizes complete path evaluation and node proximity sensing is presented. However, the VNoE and the VLiE are still performed separately, thus the ignorance of the coupling between these two potentially increases the probability of resource fragmentation.…”

Section: Introductionmentioning

confidence: 99%

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Multidimensional Resource Fragmentation-Aware Virtual Network Embedding in MEC Systems Interconnected by Metro Optical Networks

Guan¹,

Song²,

Qi³

et al. 2023

Preprint

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The increasing demand for diverse emerging applications has resulted in the interconnection of multi-access edge computing (MEC) systems via metro optical networks. To cater to these diverse applications, network slicing has become a popular tool for creating specialized virtual networks. However, resource fragmentation caused by uneven utilization of multidimensional resources can lead to reduced utilization of limited edge resources. To tackle this issue, this paper focuses on addressing the multidimensional resource fragmentation problem in virtual network embedding (VNE) in MEC systems with the aim of maximizing the profit of an infrastructure provider (InP). The VNE problem in MEC systems is transformed into a bilevel optimization problem, taking into account the interdependence between virtual node embedding (VNoE) and virtual link embedding (VLiE). To solve this problem, we propose a nested bilevel optimization approach named BiVNE. The VNoE is solved using the ant colony system (ACS) in the upper level, while the VLiE is solved using a combination of a shortest path algorithm and an exact-fit spectrum slot allocation method in the lower level. Evaluation results show that the BiVNE algorithm can effectively enhance the profit of the InP by increasing the acceptance ratio and avoiding resource fragmentation simultaneously.

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“…FSO is transmitted by optical signal, which has good confidentiality. It is worth noting that Fan et al reduced the complexity of network topology by using the parallel transmission characteristics of optical fiber [14]. However, there are some shortcomings for 60 GHz, such as poor penetration ability and short propagation distance.…”

Section: Related Workmentioning

confidence: 99%

A Construction Method of Hybrid Wireless Link Topology VDCell

Tang

Zhang

2022

J. Phys.: Conf. Ser.

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With the development of cloud computing, the data center network is undergoing great changes. The traditional wired data center network needs a large number of wired links, so it takes huge resources to deploy. For the wireless data center network, although the line installation is simple and the maintenance cost is reduced, the wireless transmission signal is easily blocked. Therefore, this paper proposes a hybrid data center network VDCell based on VLC link, and designs a rule to connect wireless links. Compared with the original DCell topology, it has the following advantages: First of all, the VLC link can be directly installed and used, without centralized control in VDCell, so no additional equipment is needed. Secondly, it is only necessary to add wireless links to the original structure, and the design rules are used to construct the structure, which shortens the communication path length between servers and is very simple to deploy. The increase of data links makes the structure more fault-tolerant. In addition, this paper also proposes a unicast routing algorithm.

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Efficient Virtual Network Embedding of Cloud-Based Data Center Networks into Optical Networks

Cited by 28 publications

References 42 publications

Fault-Tolerant Secure Routing Based on Trust Evaluation Model in Data Center Networks

Fault-Tolerant Secure Routing Based on Trust Evaluation Model in Data Center Networks

Multidimensional Resource Fragmentation-Aware Virtual Network Embedding in MEC Systems Interconnected by Metro Optical Networks

A Construction Method of Hybrid Wireless Link Topology VDCell

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