A control-theoretic approach to the design of an explicit rate controller for ABR service
IEEE/ACM Transactions on Networking (TON)
SOSP '01 Proceedings of the eighteenth ACM symposium on Operating systems principles
TCP/IP and Linux protocol implementation: systems code for the Linux Internet
TCP/IP and Linux protocol implementation: systems code for the Linux Internet
Analysis of link failures in an IP backbone
Proceedings of the 2nd ACM SIGCOMM Workshop on Internet measurment
Exploiting Routing Redundancy via Structured Peer-to-Peer Overlays
ICNP '03 Proceedings of the 11th IEEE International Conference on Network Protocols
S3: a scalable sensing service for monitoring large networked systems
Proceedings of the 2006 SIGCOMM workshop on Internet network management
Major improvements in TCP performance over satellite and radio
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Tapestry: a resilient global-scale overlay for service deployment
IEEE Journal on Selected Areas in Communications
Comparison of end-to-end and network-supported fast startup congestion control schemes
Computer Networks: The International Journal of Computer and Telecommunications Networking
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CHART seeks to improve the performance of operational DoD internets through the introduction of an intelligent network overlay. TCP performance -- particularly between CONUS and forward-deployed components located in combat theaters -- can be severely degraded due to high loss rates and long latencies. The lack of current information about network conditions in the core NIPRnet/ SIPRnet further compounds the problem, because end hosts lack the data required to make intelligent routing decisions. Deploying CHART's enhanced control plane improves measurement and monitoring of unreliable communication links to provide current network state information to routers implemented in both software and hardware, enabling intelligent routing around faulty links. We describe the design of software and hardware routers sharing a common network 'sensing' infrastructure, the implementation of end-to-end Quality of Service via flow state aware routers, and a new network-aware TCP/IP stack for Linux end systems. Performance test results demonstrate that bulk file transfer throughput can be increased by as much as an order of magnitude in networks with severely impaired communication links.