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    block this user An-Ping Li

    Research Fellow

    Beijing 100085, P.R.China

    Operations measurement for engineering support of high-speed networks with self-similar traffic

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    Traffic engineering for high-speed packet networks is necessary to ensure that provisioned capacity is sufficient to meet anticipated demand for a broad range of offered services, but not so excessive as to render services uneconomical. Currently most packet-based networks, including Internet, Frame Relay, and ATM networks, are engineered and managed either using traditional circuit-switched methods or on an ad-hoc basis. Given the anticipated diversity of packet applications (e.g., voice, data, and video) with fundamental differences in traffic patterns, usage, and QOS objectives, lack of more suitable methods can result in capacity and performance problems. Compounding the problem is the limited engineering support sometimes provided by vendors of packet network switches/routers, both in terms of operations measurements and tra c-related guidelines. A fundamental issue of high-speed network engineering is the limited set of available traffic measurements which form the basis of guidelines that can be applied in practice. Using ATM as an example, we review some operational traffic measurements, including those in Bellcore generic requirements (GR-1248-CORE) for ATM operations, as well as propose measurement alternatives such as ner time-scale cell counts, peak rate measurements, link and processor utilization histograms, buffer usage measurements, and variance-time measurements, and describe how these measurements can be used in engineering. One or more of these new alternatives can potentially be implemented by the switch/router or management system suppliers to fulfill the need to better engineer high-speed packet networks.

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    Description

    Title : Operations measurement for engineering support of high-speed networks with self-similar traffic
    Abstract : Traffic engineering for high-speed packet networks is necessary to ensure that provisioned capacity is sufficient to meet anticipated demand for a broad range of offered services, but not so excessive as to render services uneconomical. Currently most packet-based networks, including Internet, Frame Relay, and ATM networks, are engineered and managed either using traditional circuit-switched methods or on an ad-hoc basis. Given the anticipated diversity of packet applications (e.g., voice, data, and video) with fundamental differences in traffic patterns, usage, and QOS objectives, lack of more suitable methods can result in capacity and performance problems. Compounding the problem is the limited engineering support sometimes provided by vendors of packet network switches/routers, both in terms of operations measurements and tra c-related guidelines. A fundamental issue of high-speed network engineering is the limited set of available traffic measurements which form the basis of guidelines that can be applied in practice. Using ATM as an example, we review some operational traffic measurements, including those in Bellcore generic requirements (GR-1248-CORE) for ATM operations, as well as propose measurement alternatives such as ner time-scale cell counts, peak rate measurements, link and processor utilization histograms, buffer usage measurements, and variance-time measurements, and describe how these measurements can be used in engineering. One or more of these new alternatives can potentially be implemented by the switch/router or management system suppliers to fulfill the need to better engineer high-speed packet networks.
    Subject : unspecified
    Area : Mathematics
    Language : English
    Affiliations
    Url : http://www.caida.org/outreach/isma/9901/slides/wang/jwang_itc16.pdf
    Doi : 10.1.1.125.8463

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    An-Ping's Peer Evaluation activity

    Emailed by 1
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