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NNSTAT: Internet Statistics Collection Package: Introduction and User Guide Disclosure Number: IPCOM000128685D
Original Publication Date: 1988-Dec-31
Included in the Prior Art Database: 2005-Sep-16
Document File: 7 page(s) / 27K

Publishing Venue

Software Patent Institute

Related People

Robert T. Braden: AUTHOR [+4]


This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 18% of the total text.

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NNSTAT: Internet Statistics Collection Package: Introduction and User Guide

Robert T. Braden Annette L. DeSchon


4676 Admiralty Way/Marina del Rey/California 90292-6695

This research is supported by the National Science Foundation under Cooperative Agreement NCR-87-18217. Views and conclusions contained in this report are the authors and should not be interpreted as representing the official opinion or policy of the National Science Foundation, the U.S. Government, or any person or agency connected with them.

1. Introduction

NNStat is a set of programs that comprise a facility for the distributed collection of Internet traffic statistics. This facility is designed to support the requirements of a network administrator for gathering long-term usage statistics simultaneously at many network entry points. Although it is primarily intended for collecting long-term traffic statistics for administration, management, and topology engineering, NNStat is sufficiently general to be useful for operational problem solving.

Distributed statistics collection has two aspects: acquisition of the primary data at multiple locations, and collection of all the acquired data into a single location.

(1) Distributed Data Acquisition

The raw data must be acquired at a number of network/Internet points simultanously. In the NNStat model, there will be a statistics acquisition agent (SAA) process executing in a computer system attached to each network/Internet node for which data is required. The SAA machines could be packet switches, gateways, general-purpose hosts, or hosts dedicated to the acquisition function.

(2) Centralized Data Collection

Data (or summaries of data) acquired by the SAA processes must be transmitted to a central site for analysis, reporting, and long-term storage. This central site, the statistics collection host (SCH), will run a data collection program to gather the data from the SAA processes. In many cases, a single locus for data collection is sufficient; however, it should be possible to have multiple SCH's simultaneously gathering data from the same set of acquisition agents. We may think of a primary SCH that serves as a central repository for usage data by a particular administration, with perhaps secondary collection hosts being used intermittently for short-term statistical studies.

The principal components of the NNStat package are an SAA program and an SCH program. The NNStat design is based upon the common use of Ethernets for interconnection of networks and Internet regions. NSFnet provides an example:

University of Southern California Page 1 Dec 31, 1988

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NNSTAT: Internet Statistics Collection Package: Introduction and User Guide

o Each component of NSFnet above the campus level (i.e., the NSFnet Backbone and each of the middle-level network:) consists of a set of IP gateways connected by serial lines. o Each gateway is also connect...