-Real traffic flows are captured in various network environments, such as Academic, Core, Dial-Up, Transit, and Leased Line. Their statistical properties are analyzed. IAT (Inter-Arrival Time Histogram) histograms, IAT cumulative distribution probabilities, packet size histograms, packet size cumulative distribution probabilities, the influence of traffic aggregation on burstiness, and burstine...

Efficient IPv6 packet forwarding is still a major bottleneck in todays networks. Especially in the internet core we are faced with very large routing tables and a high number of high-speed links. In addition economical restrains exist in terms of manufacturing and operation costs. So demand is high for efficient IPv6 packet forwarding mechanisms. In the last few years a lot of work has been don...

The Core Stateless Fair Queuing (CSFQ) is a distributed approach of Fair Queuing (FQ). The limitations include its inability to estimate fairness during large traffic flows, which are short and bursty (VoIP or video), and also it utilizes the single FIFO queue at the core router. For improving the fairness and efficiency, we propose an Enhanced Core Stateless Fair Queuing (ECSFQ) with multiple ...

Providing strict bandwidth guarantees to packet flows in the Internet is an inherently challenging task. It requires signaling mechanisms, policing mechanisms, accurate and rapid accounting of network resources, and call admission control. We present a novel protocol that provides bandwidthguarantees to Internet packet flows. This protocol, called the Edge-assisted Quality of Service (EQOS) pro...

Network processors (NPs) are programmable devices with special architectural features that are optimized to perform packet-processing functions. They have emerged to cope with the ever-changing networking applications that are becoming increasingly complex. NPs are expected to become the silicon core of network equipments that require a high degree of flexibility to support evolving network ser...

The loss of fairness due to parallel TCP connections and the new UDP applications imply an architectural change in Internet’s structure. Service Differentiation is a new concept that defines simple methods to improve Quality of Service. The key modules of this model are the profile verifiers located in edge routers. They are charged of creating a tag for each packet based on this verification. ...

The analysis of packet payload is mandatory for network security and traffic monitoring applications. The computational cost of this activity pushed the industry towards hardware-assisted deep packet inspection (DPI) that have the disadvantage of being more expensive and less flexible. This paper covers the design and implementation of a new DPI framework using FastFlow, a skeleton-based parall...

Multiple communication protocols are used to organize transmissions from several sources (network nodes) in such a way that scheduled transmissions are likely to be successful. Aloha is one of the most common examples of such a protocol. A major characteristic of Aloha is its great simplicity: the core concept consists in allowing each source to transmit a packet and back-off for some random ti...

Guaranteed QoS Synthesis (GQS) is a distributed measurement-based admission control scheme. It is designed as a simple and scalable approach to providing strong service guarantees using bulk packet congestion marking across a core network region. We describe the operation and performance of GQS, with particular reference to its use for fair resource-sharing between guaranteed traffic and a rate...