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Data centers are core infrastructure of cloud computing. Network virtualization in these centers is a promising solution that enables coexistence of multiple virtual networks on a shared infrastructure. It offers flexible management, lower implementation cost, higher network scalability, increased resource utilization, and improved energy efficiency. In this paper, we consider switch-centric data...
Network visualization enables coexistence of multiple virtual networks on a shared infrastructure without requiring unified protocols, applications, and control and management planes. Recent approaches such as Software Defined Networking have enabled cloud service providers to offer virtualized network services that require embedding virtual network requests in data centers. In this paper, we employ...
Network visualization enables support and deployment of new services and applications that the current Internet architecture is unable to support. Virtual Network Embedding (VNE) problem that addresses efficient mapping of virtual network elements onto a physical infrastructure (substrate network) is one of the main challenges in network virtualization. The Global Resource Capacity (GRC) is a VNE...
The exponential growth of the Routing Information Base (RIB) of the Internet's Default-Free Zone (DFZ) routers has raised concerns about non-scalability of the current Internet's routing architecture. The main reason is that Internet addresses currently carry information about both the identity and location (physical connection point) of devices connected to the Internet. The Locator/ID Separation...
Deflection routing is employed to ameliorate packet loss caused by contention in buffer-less architectures such as optical burst-switched networks. The main goal of deflection routing is to successfully deflect a packet based only on a limited knowledge that network nodes possess about their environment.
Border Gateway Protocol (BGP) is the core component of the Internet's routing infrastructure. Abnormal routing behavior impairs global Internet connectivity and stability. Hence, designing and implementing anomaly detection algorithms is important for improving performance of routing protocols. While various machine learning techniques may be employed to detect BGP anomalies, their performance strongly...
Contention is the main source of information loss in buffer-less network architectures where deflection routing is a viable contention resolution scheme. In recent years, various reinforcement learning-based deflection routing algorithms have been proposed. However, performance of these algorithms has not been evaluated in larger networks that resemble the autonomous system-level topology of the Internet...
In this paper, we introduce a predictive Q-learning deflection routing (PQDR) algorithm for buffer-less networks. Q-learning, one of the reinforcement learning (RL) algorithms, has been considered for routing in computer networks. The RL-based algorithms have not been widely deployed in computer networks where their inherent random nature is undesired. However, their randomness is sought-after in...
In this paper, we introduce a predictive Q-learning deflection routing (PQDR) algorithm for buffer-less networks. Q-learning, one of the reinforcement learning (RL) algorithms, has been considered for routing in computer networks. The RL-based algorithms have not been widely deployed in computer networks where their inherent random nature is undesired. However, their randomness is sought-after in...
In this paper, we propose a Q-learning based deflection routing algorithm that may be employed to resolve contention in optical burst-switched networks. The main goal of deflection routing is to successfully deflect a burst based only on a limited knowledge that network nodes possess about their environment. Q-learning, one of the reinforcement learning algorithms, has been proposed in the past to...
The Border Gateway Protocol (BGP) is the de facto Internet routing protocol. Various aspects of the BGP protocol have been analyzed using mathematical and experimental approaches. Formal verification of BGP specification validates whether or not a specific set of requirements is satisfied. In resent years, the probabilistic behavior of BGP has been explored. The size of routing tables has been modeled...
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