Congestion avoidance and control
SIGCOMM '88 Symposium proceedings on Communications architectures and protocols
Dummynet: a simple approach to the evaluation of network protocols
ACM SIGCOMM Computer Communication Review
Assessing the quality of voice communications over internet backbones
IEEE/ACM Transactions on Networking (TON)
Web100: extended TCP instrumentation for research, education and diagnosis
ACM SIGCOMM Computer Communication Review
Networking and Online Games
NS-2 TCP-Linux: an NS-2 TCP implementation with congestion control algorithms from Linux
WNS2 '06 Proceeding from the 2006 workshop on ns-2: the IP network simulator
Characterizing residential broadband networks
Proceedings of the 7th ACM SIGCOMM conference on Internet measurement
An independent H-TCP implementation under FreeBSD 7.0: description and observed behaviour
ACM SIGCOMM Computer Communication Review
NETWORKING '09 Proceedings of the 8th International IFIP-TC 6 Networking Conference
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Consumer broadband services are increasingly a mix of TCP-based and UDP-based applications, often with quite distinct requirements for interactivity and network performance. Consumers can experience degraded service when application traffic collides at a congestion point between home LANs, service provider edge networks and fractional-Mbit/sec `broadband' links. We illustrate two key issues that arise from the impact of TCP-based data transfers on real-time traffic (such as VoIP or online games) sharing a broadband link. First, well-intentioned modifications to traditional TCP congestion control can noticeably increase the latencies experienced by VoIP or online games. Second, superficially-similar packet dropping rules in broadband gateways can induce distinctly different packet loss rates in VoIP and online game traffic. Our observations provide cautionary guidance to researchers who model such traffic mixes, and to vendors implementing equipment at either end of consumer links.