Optical Network Control: Architecture, Protocols, and Standards
Optical Network Control: Architecture, Protocols, and Standards
Communication Networks: Fundamental Concepts and Key Architectures
Communication Networks: Fundamental Concepts and Key Architectures
Identifying elephant flows through periodically sampled packets
Proceedings of the 4th ACM SIGCOMM conference on Internet measurement
A methodology for studying persistency aspects of internet flows
ACM SIGCOMM Computer Communication Review
Fisher information of sampled packets: an application to flow size estimation
Proceedings of the 6th ACM SIGCOMM conference on Internet measurement
Optimal combination of sampled network measurements
IMC '05 Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement
InTraBase: integrated traffic analysis based on a database management system
E2EMON '05 Proceedings of the End-to-End Monitoring Techniques and Services on 2005. Workshop
Fast local rerouting for handling transient link failures
IEEE/ACM Transactions on Networking (TON)
"Who's Afraid of High Def?' Institutional Factors Influencing HDTV Diffusion in the Netherlands
ICDS '08 Proceedings of the Second International Conference on Digital Society
Autonomic Management for Grid Applications
PDP '08 Proceedings of the 16th Euromicro Conference on Parallel, Distributed and Network-Based Processing (PDP 2008)
Characteristic analysis of internet traffic from the perspective of flows
Computer Communications
An architecture for the self-management of lambda-connections in hybrid networks
EUNICE'07 Proceedings of the 13th open European summer school and IFIP TC6.6 conference on Dependable and adaptable networks and services
Wide-area Internet traffic patterns and characteristics
IEEE Network: The Magazine of Global Internetworking
Self-management of hybrid networks: introduction, pros and cons
EUNICE'11 Proceedings of the 17th international conference on Energy-aware communications
Review: A survey of network flow applications
Journal of Network and Computer Applications
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Network measurement provides vital information on the health of managed networks. The collection of network information can be used for several reasons (e.g., accounting or security) depending on the purpose the collected data will be used for. At the University of Twente (UT), an automatic decision process for hybrid networks that relies on collected network information has been investigated. This approach, called self-management of hybrid networks requires information retrieved from measuring processes in order to automatically decide on establishing/releasing lambda-connections for IP flows that are long in duration and big in volume (known as elephant flows). Nonetheless, the employed measurement technique can break the self-management decisions if the reported information does not accurately describe the actual behavior and characteristics of the observed flows. Within this context, this paper presents an investigation on the trustfulness of measurements performed using the popular NetFlow monitoring solution when elephant flows are especially observed. We primarily focus on the use of NetFlow with sampling in order to collect network information and investigate how reliable such information is for the self-management processes. This is important because the self-management approach decides which flows should be offloaded to the optical level based on the current state of the network and its running flows. We observe three specific flow metrics: octets, packets, and flow duration. Our analysis shows that NetFlow provides reliable information regarding octets and packets. On the other hand, the flow duration reported when sampling is employed tends to be shorter than the actual duration.