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In this paper, we present an introduction to our architecture for a virtualized network infrastructure and explain its enabling technologies including OpenFlow and Network OS for integrated control plane. To enable easy innovation within network research area, infrastructure virtualization to share a physical infrastructure among researchers and an idea of having programmability in control plane have...
We present a new multi-path routing methodology called MLB-routing based on multinomial logit model, which is well known as the random utility theory. The key concept of the study is to incorporate multiple paths from same origin to destination, and distribute packets followed by the multinomial logit type probability. Since MLB-routing is pure multi-path routing, it reduce the severe convergence...
No single layers and technologies can construct a large scale network, thus networks are organized as a physical structure of variety of layers. For example in data center, networks are typically consists of access and aggregation L2 switches and core L2/L3 switches networks. However, new trends for server virtualization can change traffic dynamics, i.e. virtualized host can be located at any locations...
We propose a programmable and scalable traffic management scheme. Programmable traffic management at high-speed routers is difficult because programmability and high-speed packet processing have involved a serious tradeoff. To attain both, the new scheme combines control programs at a control server and simple packet handling functions, such as sampling packet headers and discarding packets, at routers...
In this paper, we propose a simplified multi-path aggregation scheme, Ethernet with flow label for multi-path, called EFL-MP. There are several aggregation schemes, such as link aggregation and multi-path TCP, for multi-path load balancing. However, link aggregation does not distribute a single flow into multiple paths due to its MAC address based flow dispatch. In addition, the multipath TCP scheme...
In this paper, we propose an Ethernet-based transmission-guaranteed, congestion-controlled network using a simplified multi-path aggregation scheme. Multi-path aggregation increases throughput by multiplying the bandwidth of a single path by the number of paths. There are several aggregation schemes, such as Link Aggregation and Multi-path TCP. However, Link Aggregation is unable to utilize multiple...
In this paper, we present the design, implementation and evaluation of a new TCP protocol, TCP-AW (TCP adaptive Westwood). This study was motivated by the intent to address simultaneously several challenging network scenarios, including high bandwidth efficiency in long and fat pipes, RTT fairness, and friendliness to legacy protocol, in a single protocol. TCP-AW leverages the key features of TCP...
Packet sampling techniques have recently attracted much attention as a solution to the traffic measurement in high-speed networks, where large processing cost is incurred when monitoring the behaviors of a large number of sessions. We have proposed a method for estimating TCP packet loss rate from sampled packets and have evaluated the method through simulations and experiments. Results of those evaluations...
Interest in the TCP overlay network, which controls the data transmission quality at the transport layer, has grown as the user demand for sophisticated and diversified services in the Internet has increased. In the TCP overlay network, TCP proxy is a fundamental mechanism that transparently splits a TCP connection between sender and receiver hosts into multiple TCP connection at some nodes in the...
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