The advent of programmable network switch ASICs and recent developments on other data planes (NPUs, FPGAs) drive the renewed interest in plane programmability. P4 language has emerged as a strong candidate to describe protocol independent datapath pipeline. With its supported architectures, provides an excellent way define packet processing forwarding behavior, while leaving networking components such traffic management engine, non-programmable fixed function elements, based capabilities...

This paper concerns the use of Active Queue Management (AQM) to reduce queuing delay. It offers insight into why it has proved hard for a Proportional Integral (PI) controller remain both responsive and stable while controlling `Classic' TCP flows, such as Reno Cubic. Due their non-linearity, controller's adjustments have be smaller when target drop probability is lower. The PI Enhanced (PIE) algorithm attempts solve this problem by scaling down using look-up table. Instead, we control an...

HTTP Adaptive Streaming (HAS) is rapidly becoming a key video delivery technology for fixed and mobile networks. However, today there no solution that allows network operators or CDN providers to perform network-based QoE monitoring HAS sessions. We present system, based on data collected in the network, without information from client. To retrieve major parameters such as average quality, quality variation, rebuffering events interactivity delay, we propose technique called session...

Network programmability brings agility, flexibility and rapid introduction of new capabilities, towards supporting application requirements. Enabling programmable traffic management at the data plane can provide significant benefits pertaining to Quality Service (QoS). To this end we adopt P4, domain specific language for programming network switches, implement an Active Queue Management (AQM) scheme reducing queuing delay. We verify design with a proof concept implementation PI2, modern AQM...

HTTP Adaptive Streaming (HAS) is rapidly becoming a key video delivery technology for fixed and mobile networks. However, today there no solution that allows network operators or CDN providers to perform network-based QoE monitoring HAS sessions. We present system, based on data collected in the network, without information from client. To retrieve major parameters such as average quality, quality variation, rebuffering events interactivity delay, we propose technique called session...

The introduction of new added value services such as IPTV has introduced great challenges for today's broadband DSL access networks these have stringent quality demands. In an attempt to protect the delivery existing sessions, operators employ admission control mechanisms that limit amount sessions transmitted in network. Current require a traffic specification each stream, order know beforehand how many resources need be reserved. For variable bit rate videos, which are bursty nature,...

In recent years, the networking community has put a significant research effort in identifying new ways to distribute content multiple users better-than-unicast manner. Scalable delivery is more important now video dominant traffic type and further growth expected. To make distribution scalable, in-network optimization functions are needed such as caches. The established transport layer protocols end-to-end do not allow optimizing below application layer, hence popularity of overlay...

Video streaming services have continuously gained popularity over the last decades, accounting for about 70% of all consumer Internet traffic in 2016. All these video sessions strict delivery deadlines order to avoid playout interruptions, detrimentally impacting Quality Experience (QoE). However, vast majority this uses TCP at transport layer, which is known be far from minimizing number deadline-missing streams. By introducing deadline-awareness can optimized by prioritizing specific...

This demo dramatically illustrates how replacing 'Classic' TCP congestion control (Reno, Cubic, etc.) with a 'Scalable' alternative like Data Centre (DCTCP) keeps queuing delay ultra-low; not just for select few light applications voice or gaming, but even when variety of interactive all heavily load the same (emulated) Internet access. DCTCP has so far been confined to data centres because it is too aggressive---it starves Classic flows. To allow be exploited on public Internet, we...

The excess buffering of packets in network elements, also referred to as bufferbloat, results high latency. Considering the requirements traffic generated by video conferencing systems like Zoom, cloud rendered gaming platforms Google Stadia, or even streaming services such Netflix, Amazon Prime and YouTube, timeliness is important. Ensuring low latency IP flows with a throughput calls for application Active Queue Management (AQM) schemes. This introduces yet another problem co-existence...

In this paper, we investigate the proxy video caching problem and propose a specific replacement strategy for segmented streaming. The proposed algorithm makes use of natural linear time structure streaming, which fits philosophy optimal MIN algorithm. By observing watching positions active viewers at certain point time, approach computes exact reuse or, if not available, predicted stored segments, discards segment that is supposedly to be used furthest in time. Evaluations performed on...

DSL aggregation networks are evolving to the standard platform for delivery of multimedia services such as television and network based personal video recording. These introduce large challenges operators they sensitive packet loss. Therefore, admission control mechanisms required avoid congestion caused by allowing too many sessions. However, often bursty it is not possible reserve a fixed amount bandwidth in since this policy will lead either over-admittance or under-admittance. Recently,...

Network Function Virtualization (NFV) decouples network functions from the underlying specialized devices, enabling processing with higher flexibility and resource efficiency. This promotes use of <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">virtual functions</i> (VNFs), which can be grouped to form a xmlns:xlink="http://www.w3.org/1999/xlink">service function chain</i> (SFC). A critical challenge in NFV is SFC partitioning (SFCP),...

The consumption of multimedia services over HTTP-based delivery mechanisms has recently gained popularity due to their increased flexibility and reliability. Traditional broadcast TV channels are now offered the Internet, in order support Live for a broad range consumer devices. Moreover, service providers can greatly benefit from offering external live content (e.g., YouTube, Hulu) managed way. Recently, HTTP Adaptive Streaming (HAS) techniques have been proposed which video clients...

Video streaming services have continuously gained popularity over the last decades, accounting for about 70% of all consumer Internet traffic in 2016. All these video sessions strict delivery deadlines order to avoid playout interruptions, detrimentally impacting Quality Experience (QoE). However, vast majority this uses TCP at transport layer, which is known be far from minimizing number deadline-missing streams. By introducing deadline-awareness can optimized by prioritizing specific...

Network Function Virtualization (NFV) is one of the main enablers behind promised improvements in Fifth Generation (5G) networking era. Thanks to this concept, Functions (NFs) are evolving into software components (e.g., Vir-tual (VNFs)) that can be deployed general-purpose servers following a cloud-based approach. In way, NFs at scale, fulfilling great variety service requirements. Unfortunately, complexity management and orchestration NFV-based networks has increased due diverse demands...

Network slicing plays a key role in the 5G ecosystem for vertical industries to introduce new services. However, one widely-recognized challenge of network is provide traffic isolation and concurrently satisfy diverse performance requirements, e.g., bandwidth latency. In this work, we showcase capability retain these two goals at same time, via extending 5Growth baseline architecture designing data-plane pipeline, i.e., virtual queue, over P4 switch. To demonstrate effectiveness our...