This paper proposes a novel fast backward congestion notification mechanism for TCP congestion control. The proposed method uses a simple implementation to inform the traffic source at a very early stage that the network is becoming overloaded or congested and ask the source to slow down its transmission rate. Since TCP uses acknowledgments (ACKs) to adjust the number of packets sent over the n...

2 Design Space Dimensions 2 2.1 Explicit congestion feedback . . . . . . 2 2.1.1 Source Quench . . . . . . . . . 3 2.1.2 Explicit Congestion Notification 3 2.1.3 eXplicit Congestion Protocol . 3 2.1.4 MaxNet . . . . . . . . . . . . . 4 2.1.5 Explicit Queuing Delay Accounting . . . . . . . . . . . . . 4 2.1.6 Discussion . . . . . . . . . . . . 4 2.2 Implicit input for congestion control algorith...

Network utility maximization is a well-accepted theoretical framework that describes how congestion controls cooperate to achieve an ideal sending rate allocation, for given functions of senders and constraints the network. These network are expressed as “cost” in framework. In practice, most control mechanisms obtain feedback different from framework's “cost.” This article focuses on explicit ...

Computer networks use congestion feedback from the routers and destinations to control the transmission load. Delivering timely congestion feedback is essential to the performance of networks. Reaction to the congestion can be more effective if faster feedback is provided. Current TCP/IP networks use timeout, duplicate ACKs and explicit congestion notification (ECN) to deliver the congestion fe...

This memo specifies the incorporation of ECN (Explicit Congestion Notification) to TCP and IP, including ECN’s use of two bits in the IP header.

This document specifies an algorithm for the detection and quantification of packet reordering for TCP. In the absence of explicit congestion notification from the network, TCP uses only packet loss as an indication of congestion. One of the signals TCP uses to determine loss is the arrival of three duplicate acknowledgments. However, this heuristic is not always correct, notably in the case wh...

Concerns over the scalability of TCP’s end-to-end approach to congestion control and its AIMD congestion adaptation have led to proposals for router-based congestion control, specifically, active queue management (AQM). In this paper we present an end-to-end alternative to AQM—a new congestion detection and reaction mechanism for TCP based on measurements of one-way transit times of TCP segment...

Amulticast congestion control scheme is an interesting feature to control group communication applications such as teleconferencing tools and information dissemination services. This paper addresses a comparison between multiple unicast and multicast traffic congestion control for Carrier Ethernet. In this work, we proposed to study the Quantized Congestion Notification (QCN), which is a Layer ...