Tag Archive: 'opnet pdf'

Traffic Engineering Using Multi-protocol Label Switching (MPLS) for Delay Sensitive Traffic

Traffic engineering is one of the most challenging topics in Multi-protocol Label switching (MPLS) which deal with controlling traffic in such a way so that optimized path can be achieved with respect to network utilization and efficient data delivery. Internet traffic use Interior Gateway Protocol (IGP) to send traffic over the network using the shortest […]

Modelling delay propagation within a train communication network

Industrial Ethernet has been widely used in Modern HighSpeed Train Communication Networks (HSTCN). The reliability of HSTCN influences train safety. And time-oriented reliability is an important part of the HSTCN reliability. In the situation of node dependency, it is a difficult problem to analyze delay propagation for HSTCN. In order to solve the problem, we […]

Transport Network Orchestration for End-to-End Multilayer Provisioning Across Heterogeneous SDN/OpenFlow and GMPLS/PCE Control Domains

A multidomain optical transport network composed of heterogeneous optical transport technologies (e.g., flexi/fixed-grid optical circuit switching and optical packet switching) and control plane technologies (e.g., centralized OpenFlow or distributed GMPLS) does not naturally interoperate, and a network orchestration mechanism is required. A network orchestrator allows the composition of end-to-end network service provisioning across multidomain optical […]

Special issue on mobile social networks

Social networks contribute a significant fraction of Internet traffic, and increasingly this traffic is in support of mobile social networking using smart phones. This situation has spurred considerable recentresearch interest in mobile social networks. Social networks have been studied for decades, although most of the earlier work in this area addressed issues lying outside the scope of technological networks. […]

Virtual device passthrough for high speed VM networking

Supporting network I/O at high packet rates in virtual machines is fundamental for the deployment ofCloud data centers and Network Function Virtualization. Historically, SR-IOV and hardwarepassthrough were thought as the only viable solution to reduce the high cost of virtualization. In previous work [15] we showed how even plain device emulation can achieve VM-to-VM speeds of millions of packets […]

Software defined network traffic measurement: Current trends and challenges

Next generation networks such as Software Defined Networks (SDN) must support the integration of new paradigms of service offerings such as virtual cloud computing, big data applications, data centers services, and rich multimedia content. Operators of next generation SDNs are responsible for configuring policies that employ traffic monitoring tools and measurement mechanisms to detect and […]

Quality of service control and resource prioritization with Software Defined Networking

In this study, we aim to analyze how Software Defined Networking (SDN) can help to ensure a high-quality uninterrupted Voice over Internet Protocol (VoIP) service accompanied by video for prioritized users and entities in a network congested with background traffic. Guaranteeing a level of Quality of Service (QoS) and resource prioritization are key concepts for future networks […]

Independent transient plane design for protection in OpenFlow-based networks

Network protection against link failure is required to allow packets to reach the destination with minimal packet loss when a failure occurs. When a link fails, traffic that attempts to use the failed link is interrupted. Typically, routers in the network discover the failure and find a new route to bypass the failed link. Alternatively, well-known segment […]

Fine-Grained Energy-Efficient Consolidation in SDN Networks and Devices

The constant evolution and expansion of the Internet and Internet-related technologies has exposed the limitations of the current networking infrastructures, which are represented by the unsustainable power consumption and low level of scalability. In fact, these infrastructures are still based on the typical, ossified architecture of the TCP/IP paradigm. In order to cope with the Future Internet […]

Cost Minimization for Rule Caching in Software Defined Networking

Software-Defined Networking (SDN) is an emerging network paradigm that simplifies network management by decoupling the control plane and data plane, such that switches become simple data forwarding devices and network management is controlled by logically centralized servers. In SDN-enabled networks, network flow is managed by a set of associated rules that are maintained by switches […]