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)
The macroscopic behavior of the TCP congestion avoidance algorithm
ACM SIGCOMM Computer Communication Review
Explicit allocation of best-effort packet delivery service
IEEE/ACM Transactions on Networking (TON)
Adaptive packet marking for maintaining end-to-end throughput in a differentiated-services internet
IEEE/ACM Transactions on Networking (TON)
On achievable service differentiation with token bucket marking for TCP
Proceedings of the 2000 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Realizing Throughput Guarantees in a Differentiated Services Network
ICMCS '99 Proceedings of the IEEE International Conference on Multimedia Computing and Systems - Volume 2
How to Make Assured Service More Assured
ICNP '99 Proceedings of the Seventh Annual International Conference on Network Protocols
Improving Fairness in DiffServ Networks Using Adaptive Aggregate Markers
IEICE - Transactions on Information and Systems
An aggregate marker for bandwidth fairness in DiffServ
Journal of Network and Computer Applications
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Recently, there has been a considerable research interest in designing intelligent markers, tailored for TCP traffic. Markers, one of the building blocks of a traffic conditioner play a major role for resource allocation in a Differentiated Services (DiffServ) network. The TCP dynamics make the design of a marker difficult in many respects. In this paper, we list out the issues related to designing a TCP-friendly marker and propose an intelligent two-colour marker, namely, memory-based marker (MBM) to address those issues. We then extend this concept for a three-colour marker, memory-based three-colour marker (MBTCM), to be deployed for the assured forwarding per-hop behaviour in a DiffServ network. We illustrate the benefits of the MBTCM over time sliding window three-colour marker. The markers were implemented in NS simulator and extensive simulations were done to study their behaviours. Our results show significant improvement in TCP performance, especially in achieving fairness among priority flows with distinct round trip times, windows, and target rates. The markers are capable of protecting TCP flows in cases of congestion caused by the unruly UDP flows. We also investigate the impact of coexisting assured service UDP flows on the assurance to the TCP flows. The major benefits of our markers are its simplicity, least sensitivity to parameters and transparency to the end hosts.