Service differentiation and performance of weighted window-based congestion control and packet marking algorithms in ECN networks

Service Differentiation in ECN Networks Using Weighted Window-Based Congestion Control for Various Packet Marking Algorithms

Marking algorithms for service differentiation of TCP traffic

Class-based service architectures for quality-of-service (QoS) differentiation typically provide loss, throughput, and delay differentiation. However, proposals for class-based QoS differentiation generally do not account for the needs of TCP traffic, which are characterized by a coupling of packet losses and achievable throughput. Ignoring this coupling may result in poor service differentiati...

End-to-End Congestion Control for System Area Networks

congestion control, system area networks, SAN, InfiniBand, window control, rate control, ECN, I/O Interconnect System Area Networks (SANs) using linklevel flow control experience congestion spreading, where one bottleneck link causes traffic to block throughout the network. In this paper, an end-to-end congestion control scheme is proposed that avoids congestion spreading, delivers high through...

Using ECN Marks to Improve TCP Performance over Lossy Links

TCP was designed for wireline networks, where loss events are mostly caused by network congestion. The congestion control mechanism of current TCP uses loss events as the indicator of congestion, and reduces its congestion window size. However, when a lossy link is involved in a TCP connection, non-congestion random losses should also be considered. The congestion window size should not be decr...

Simulation-based Study of Ecn Performance in Red Networks

Explicit Congestion Notification is a recently proposed congestion avoidance scheme for IP networks. ECN uses marking packets instead of dropping them in case of incipient congestion. Avoiding packet drops saves network bandwidth and allows congestion signals to be propagated faster. In the paper, we present the results of detailed simulations that we have performed to assess the gain TCP appli...