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- Experimental Evaluation of TCP Protocols for High-Speed Networks
- In this paper we present experimental results evaluating the performance of the Scalable-TCP, HS-TCP, BIC-TCP, FAST-TCP and H-TCP proposals in a series of benchmark tests. In summary, we find that both Scalable-TCP and FAST-TCP consistently exhibit substantial unfairness, even when competing flows share identical network path characteristics. Scalable-TCP, HS-TCP, FAST-TCP...
- Tags: Ireland, Network, Flow, TCP, Convergence, Tcp/Ip, VOIP, Networking, Telecommunications
- White papers 2006-08-31
- Analysis of Scalable TCP in the Presence of Markovian Losses
- In high speed networks, the standard TCP's AIMD algorithm was observed to be inefficient in utilizing the link capacity. As a result of which several proposals such as High-Speed TCP, FAST and Scalable TCP, were put forward. In contrast to the additive increase multiplicative decrease algorithm used in the standard...
- Tags: Algorithm, Window, Computer Science, TCP, Analysis, Tcp/Ip, Engineering, Construction, Networking
- White papers 2007-01-01
- Performance Evaluation of Scalable TCP and HighSpeed TCP Over Geostationary Satellite Links
- This paper analyse the performance in a satellite environment of two recently proposed modifications to the TCP's congestion control algorithm, namely Scalable TCP and HighSpeed TCP. These two protocols, originally designed for high-speed backbone links, appear to be major candidates for replacing in the next-generation Internet the current congestion control...
- Tags: Performance, Environment, Performance Evaluation, TCP, Satellite, Satellite Environment, Tcp/Ip, Networking
- White papers 2005-01-27
- Fault-Tolerant and Scalable TCP Splice and Web Server Architecture
- This paper proposes three enhancements to the TCP splicing mechanism - enable the same TCP connection to be simultaneously spliced through multiple machines for better scalability; make a spliced connection fault tolerant to proxy failures; and provide flexibility of splitting the splicing functionality between a proxy and a backend server...
- Tags: Web Server, Fault-tolerance, Server, TCP, Web Servers, Tcp/Ip, Networking, Internet
- White papers 2006-01-01
- TCP-Adaptive Reno for Improving Efficiency-Friendliness Tradeoffs of TCP Congestion Control Algorithm
- It has been recognized that TCP throughput deteriorates in networks with large bandwidth-delay-product and non-negligible packet losses. A number of protocols, such as High Speed TCP, Scalable TCP and TCP-Westwood have been proposed to address this problem. However, their lack of friendliness to existing protocols has hampered their wide deployment...
- Tags: Algorithm, Network, Congestion, TCP, Tcp/Ip, Networking
- White papers 2006-01-20
- Evaluating the Performance of TCP Stacks for High-Speed Networks
- The TCP congestion control algorithm has been remarkably successful in making the current internet function efficiently. However, it has become clear that it can perform very poorly in networks with high Bandwidth-Delay Product BDP paths. In response to this poor performance, numerous proposals have been made for changes to the...
- Tags: Algorithm, Performance, Congestion, TCP, Tcp/Ip, Performance Management, Engineering, Networking, Human Resources, Workforce Management
- White papers 2005-06-27
- Media-And TCP-Friendly Congestion Control Algorithm for Scalable Video Streams (Extended Version)
- This paper presents a Media- and TCP-Friendly Rate-based Congestion Control algorithm MTFRCC for scalable video streaming in the Internet. The algorithm integrates two new techniques, first the use of a utility-based model for the target system combined with the rate-distortion function as the application utility measure for optimizing the overall...
- Tags: Algorithm, TCP, Video, Video Stream, Engineering, Corporate Communications, Marketing
- White papers 2005-11-22
- Compound TCP: A Scalable and TCP-Friendly Congestion Control for High-Speed Networks
- Many applications require fast data transfer over high speed and long distance networks. However, standard TCP fails to fully utilize the network capacity in high-speed and long distance networks due to its conservative congestion control CC algorithm. Some works have been proposed to improve the connection's throughput by adopting more...
- Tags: Algorithm, Network, TCP, Tcp/Ip, Networking
- White papers 2006-01-20
- Impact of Background Traffic on Performance of High-Speed TCP Variant Protocols
- This paper examines the effect of background traffic on the performance of existing high-speed TCP variant protocols, namely BIC-TCP, CUBIC, FAST, HSTCP, H-TCP and Scalable TCP. It also demonstrates that the stability, link utilization, convergence speed and fairness of the protocols are clearly affected by the variability of flow sizes...
- Tags: Performance, North Carolina State University, Performance Management, Tcp/Ip, Routers & Switches, Networking, Human Resources, Workforce Management
- White papers 2006-11-29
- Understanding TCP Over TCP: Effects of TCP Tunneling on End-to-End Throughput and Latency
- TCP tunnel is a technology that aggregates and transfers packets sent between end hosts as a single TCP connection. By using a TCP tunnel, the fairness among aggregated flows can be improved and several protocols can be transparently transmitted through a firewall. Currently, many applications such as SSH, VTun, and...
- Tags: Latency, TCP, Tcp/Ip, Networking
- White papers 2007-11-16
- Translating Scalable Video Streams From Wide-Area to Access Networks
- Transmitting video over UDP has been considered advantageous because it allows for discarding of packets in favor of retransmissions, and sender-controlled timing. Using UDP has been criticized because it allows video streams to consume more than their fair share of bandwidth, which is typically associated with the back-off behavior of...
- Tags: Microsoft Access, Network, TCP, Video, UDP, Video Stream, Tcp/Ip, Corporate Communications, Networking, Digital Video, Marketing, Personal Technology
- White papers 2007-01-01
- LTCP: Improving the Performance of TCP in Highspeed Networks
- This paper proposes Layered TCP LTCP for short, a set of simple modifications to the congestion window response of TCP to make it more scalable in highspeed networks. LTCP modifies the TCP flow to behave as a collection of virtual flows to achieve more efficient bandwidth probing. The number of...
- Tags: Performance, TCP, LTCP, Tcp/Ip, Networking
- White papers 2005-11-28
- Scalable Socket Buffer Tuning for High-Performance Web Servers
- Although many research efforts have been devoted to network congestion in the face of an increase in the Internet traffic, there is little discussion on performance improvements for endhosts. This paper proposes a new architecture, called Scalable Socket Buffer Tuning SSBT, to provide high-performance and fair service for many TCP...
- Tags: High-performance, TCP, Scalable Socket Buffer Tuning, Tcp/Ip, Internet, Leadership, Networking, Management
- White papers 2001-10-02
- An Analysis of TCP Through Simulation
- This paper is an analysis of TCP and its variations through the use of simulations. The NS-2 network simulator was used to help understand the behaviors and characteristics of TCP variants. Two different experiments were set forth. The first varied different load conditions; the second varied queuing algorithms. The TCP...
- Tags: TCP, Analysis, Tcp/Ip, Networking
- White papers 2006-10-28
- On Class-Based Isolation of UDP, Short-Lived and Long-Lived TCP Flows
- The congestion control mechanisms of TCP make it vulnerable in an environment where flows with different congestion sensitivity compete for scarce resources. With the increasing amount of unresponsive UDP traffic in today's Internet, new mechanisms are needed to enforce fairness in the core of the network. This paper proposes a...
- Tags: TCP, UDP, Tcp/Ip, Networking
- White papers 2007-01-01
- A Uni?ed Framework for Modeling TCP-Vegas, TCP-SACK, and TCP-Reno
- This paper presents a general analytical framework for the modeling and analysis of TCP variations. The framework allows the modeling of multiple variations of TCP, including TCP-Vegas, TCP-SACK, and TCP-Reno, under general network situations. In particular, the framework allows us to propose the first analytical model of TCP-Vegas for arbitrary...
- Tags: TCP, Framework, Modeling, Tcp/Ip, Research & Development, Networking, Business Operations
- White papers 2007-10-22
- TCP Symbiosis: Congestion Control Mechanisms of TCP Based on Lotka-Volterra Competition Model
- This paper proposes TCP Symbiosis, which has a robust, self-adaptive and scalable congestion control mechanism for TCP. The method is quite different from existing approaches. The paper changes the window size of a TCP connection in response to information of the physical and available bandwidths of the end-to-end network path....
- Tags: Method, TCP, Bandwidth Information, Tcp/Ip, Networking
- White papers 2006-10-12
- Augmented Split-TCP Over Wireless LANs
- This paper introduces a new split-TCP approach for improving TCP performance over IEEE 802.11-based wireless LANs. TCP over wireless LANs is not aggressive, which is a fundamental reason for poor performance. This paper proposes augmented split-TCP (AS-TCP) to mitigate this problem. The scheme extends the split-connection approach that divides a...
- Tags: WLAN, TCP, Tcp/Ip, LANs, Networking, Wireless LANs, Wireless
- White papers 2006-02-20
- The Effect of Reverse Traffic on the Performance of New TCP Congestion Control Algorithms
- Several new TCP congestion control algorithms have been proposed to speed up the TCP over very fast networks. All these algorithms propose their own modifications of the increasing/decreasing phases of classic Reno/NewReno TCP. On the other hand, all of them preserve the self-clocking mechanism, which is a fundamental part of...
- Tags: Algorithm, Performance, Congestion, TCP, Tcp/Ip, Networking
- White papers 2007-01-01
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