I-D ACTION:draft-kobayashi-ipfix-large-ps-01.txt

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	Title		: Problems with Flow Collection in Large-Scale Networks
	Author(s)	: A. Kobayashi
	Filename	: draft-kobayashi-ipfix-large-ps-01.txt
	Pages		: 21
	Date		: 2008-2-21
	
Flow measurement techniques have been developed in order to cope with
   increasing bandwiths.  Flow measurement is currently being used as a
   popular method for monitoring large networks, e.g. at Internet
   Service Providers or multinational corporations, for accounting,
   management, and security purposes.  To construct the measurement
   system for such networks, the biggest challenge is scalability.
   Whereas packet sampling functions in current flow measurement
   solutions such as NetFlow/sFlow/IPFIX help to approach this issue,
   some problems still remain.  This document describes such open
   issues, which a flow-based measurement system might encounter in
   large-scale networks.  The results are intended to be used to define
   and to develop an IPFIX Mediator device.

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