Long fat pipe congestion control for multi-stream data transfer

2020

A protocol is a set of rules that governs data communication which decides when to communicate, how to communicate and where to communicate and also what to communicate. One of them is Transmission Control Protocol (TCP) that is the most popular and known protocol for controlling of the data transmission from source to destination or from one node to another node. It gives the best results in offline streaming of the data as compared to User Datagram Protocol (UDP). Congestion is the mechanism in networking that takes place in the time of communication when the data exceeds from its actual limit and it becomes overhead then congestion problem occurs. It usually occurs on the network like if there exist a router then the overhead occurs on router when there is limited time-baud buffer due to which the data may loss or overhead occurs. For this solution TCP is the best option to control and avoid from this problem. In this paper, an analysis has been made with the help of TCP for examining the congestion control queuing mechanism. Along with that, some parameters have been taken into account take are throughput and delay. These parameters have been tested under different settings and have been showed that by utilizing TCP congestion control queuing approach high throughput and low delay of queuing has encountered. From OPNET simulation results it has been concluded that TCP have shown remarkable and outstanding performance for controlling congestion issue with the help of other existing schemes that has shown poor performance.

At the Transport Layer in Internet model, Transmission Control Protocol provide host-to-host connectivity. There are many other protocols under TCP like SCTP (Stream Control Transport Protocol) and DCCP (Datagram Congestion Control Protocol) which provides more features. DCCP is unreliable transport layer protocol designed to provide congestion control and suitable for time delivery of data. SCTP is another reliable transport layer protocol which provides reliable transfer of data with congestion control mechanism. SCTP also provide other features like multi-streaming and multi-homing. This paper provides the comparative study of these three protocols.

Computer Sci. Network Security, 2008

Conventional TCP suffers from poor performance on high bandwidth delay product links meant for supporting transmission rates of multi Gigabits per seconds (Gbps). This is largely due to TCP's congestion control algorithm, which can be slow in taking advantage of large amounts of available bandwidth. A number of high-speed variants have been proposed recently, the major ones being BIC TCP, CUBIC, FAST, High-Speed TCP, Layered TCP, Scalable TCP and XCP. In this paper an effort has been made to comparatively analyze the aforementioned protocols based on various parameters viz., Throughput, Fairness, Stability, Performance, Bandwidth Utilization and Responsiveness and study the limitations of these protocols meant for the High Speed Networks.

Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications, 2006

In recent years, issues regarding the behavior of TCP in high-speed and long-distance networks have been extensively addressed in the networking research community, both because TCP is the most widespread transport protocol in the current Internet and because bandwidth-delay product continues to grow. The well known problem of TCP in high bandwidthdelay product networks is that the TCP Additive Increase Multiplicative Decrease AIMD probing mechanism is too slow in adapting the sending rate to the end-to-end available bandwidth. To overcome this problem, many modifications have been proposed such as FAST TCP [1], STCP [2], HSTCP [3], HTCP [4], BIC TCP [5] and CUBIC TCP [6]. The goal of this work is to investigate, by using both analytical models and simulation results, optimal sizing of the retransmission and out-of-order TCP buffers in case of modified TCP congestion control settings and to highlight differences between NewReno TCP and SACK TCP packet loss recovery schemes in terms of TCP internal buffers requirements. An important result is that the SACK option turns out to be particularly effective in reducing buffer requirements in the case of very high bandwidthdelay product links.

2010

TCP congestion control had managed successfully the stability of the Internet in the past decades but it has reached its limitations in “challenging” network environments. The new challenges of next-generation networks (e.g., high speed communication or the communication over different media) generated an urgent need to further develop the congestion control of the current Internet. In recent years, several new proposals and modifications of the standard congestion control mechanism have been developed by different research groups all over the world. These new mechanisms and TCP versions address different aspects of future networks and applications and improve the performance of regular TCP. One of the important network environments where the serious drawbacks of standard TCP Reno can be experienced is high speed wide are networks. These networks can be characterized by high bandwidth-delay product (BDP) and TCP cannot efficiently utilize them due to its conservative congestion cont...

International Journal for Research in Applied Science and Engineering Technology, 2017

This paper presents the comparative analysis of TCP Congestion Control Techniques including Tahoe, Reno, New Reno, SACK, Vegas and how these techniques different from each other. When any packet is being lost or timeout occurs, these techniques come into role and what is the effect on throughput, efficiency, performance when compared with TCP Vegas.

TCP or Transmission Control Protocol represents one of the prevailing ''languages'' of the Internet Protocol Suite, complementing the Internet Protocol (IP), and therefore the entire suite is commonly referred to as TCP/IP. TCP provides reliability to data transferring in all end-to-end data stream services on the internet. This protocol is utilized by major internet applications such as the e-mail, file transfer, remote administration and world-wide-web. Other applications which do not require reliable data stream service may use the User Datagram Protocol (UDP), which provides a datagram service that emphasizes reduced latency over reliability. The task of determining the available bandwidth of TCP packets flow is in fact, very tedious and complicated. The complexity arises due to the effects of congestion control of both the network dynamics and TCP. Congestion control is an approved mechanism used to detect the optimum bandwidth in which the packets are to be sent by TCP sender. The understanding of TCP behaviour and the approaches used to enhance the performance of TCP in fact, still remain a major challenge. In conjunction to this, a considerable amount of researches has been made, in view of developing a good mechanism to raise the efficiency of TCP performance. The article analyses and investigates the congestion control technique applied by TCP, and indicates the main parameters and requirements required to design and develop a new congestion control mechanism.

Lecture Notes in Computer Science, 2005

Current TCP congestion control can be inefficient and unstable in high-speed wide area networks due to its slow response with a large congestion window. Several congestion control proposals have already been suggested to solve these problems. In this paper, we propose a new variant of TCP for a high-speed network, which combines delay-based congestion control with loss-based congestion control. Our simulation results show that the proposed scheme performs better than the existing high-speed TCP protocols in terms of fairness, stability, and scalability, while providing TCP friendliness at the same time.

The current congestion control mechanism used in TCP has difficulty reaching full utilization on high speed links, particularly on wide-area connections. For example, the packet drop rate needed to fill a Gigabit pipe using the present TCP protocol is below the currently achievable fiber optic error rates. HighSpeed TCP was recently proposed as a modification of TCP's congestion control mechanism to allow it to achieve reasonable performance in high speed wide-area links. In this paper, simulation results showing the performance of HighSpeed TCP and the impact of its use on the present implementation of TCP are presented. Network conditions including different degrees of congestion, different levels of loss rate, different degrees of bursty traffic and two distinct router queue management policies were simulated. The performance and fairness of HighSpeed TCP were compared to the existing TCP and solutions for bulk-data transfer using parallel streams.

Transmission control protocol (TCP) provides a reliable data transfer in all end-to-end data stream services on the internet. There are some mechanisms that TCP has that make it suitable for this purpose. Over the years, there have been modifications in TCP algorithms starting from the basic TCP that has only slow-start and congestion avoidance algorithm to the modifications and additions of new algorithms. Today, TCP comes in various variants which include TCP Tahoe, Reno, new reno, vegas, sack etc. Each of this TCP variant has its peculiarities, merits and demerits. This paper is a review of four TCP variants, they are: TCP tahoe, Reno, new reno and vegas, their congestion avoidance algorithms, and possible future research areas.