Congestion avoidance and control
SIGCOMM '88 Symposium proceedings on Communications architectures and protocols
Connections with multiple congested gateways in packet-switched networks part 1: one-way traffic
ACM SIGCOMM Computer Communication Review
TCP/IP illustrated (vol. 1): the protocols
TCP/IP illustrated (vol. 1): the protocols
Random early detection gateways for congestion avoidance
IEEE/ACM Transactions on Networking (TON)
TCP and explicit congestion notification
ACM SIGCOMM Computer Communication Review
Improving explicit congestion notification with the mark-front strategy
Computer Networks: The International Journal of Computer and Telecommunications Networking
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A window-based flow control is a sort of feedback-based congestion control mechanisms, and has been widely used in current TCP/IP networks. In the feedback-based congestion control, feedback delay of the congestion information from the bottleneck node is one of the important elements that affect the performance. Recently, the use of an explicit congestion notification (ECN) mechanism as congestion indication from the network to source hosts has been actively discussed in the IETF. In this paper, we propose an enhanced marking strategy for ECN that can reduce the transfer delay of congestion information of a router in multiple-hop network environments. At a transit router, the proposed method relays the congestion experienced (CE)-bit contained in an incoming IP packet to the head-of-line packet with a corresponding flow which is waiting for transmission in the output buffer. Simulation results showed that ECN with the proposed mark-relay strategy produced a superior performance in terms of throughput and fairness between TCP flows.