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Abstracts |
Tanja Zseby, (Focus Fraunhofer): Introduction to IP traffic flow measurements and packet sampling
This talk provides an overview of IP traffic flow measurements and
packet sampling. The basic concepts, terminology and target scenarios
for flow measurements are introduced, as defined by the IP Flow
Information Export (IPFIX) working group. This includes the IPFIX
architecture, building blocks of a measurement process, common
information elements, data aggregation and data selection concepts as
well as the applicability of IPFIX in different situations. In addition
open issues and current challenges in the area of flow measurements are
presented. |
Benoit Claise, (Cisco): One manufacturer’s experience
with IP traffic flow measurement
The first part of this talk focuses on the latest NetFlow development in
Cisco, while the second part will share experience regarding the
specific use case of usage based billing with NetFlow. |
Juergen Quittek, (NEC Europe Ltd. ): Overview of IETF
work on IP traffic flow measurement and current developments
This presentation will give an overview of the IETF work on
standardizing traffic flow measurement with focus on the IPFIX (IP Flow
Information eXport) protocol that is used for reporting flow measurement
results. The IPFIX is active for almost 10 years and has – jointly with
the PSAMP (Packet Sampling) WG – produced 18 RFCs on the core IPFIX
protocol and extensions. The IPFIX protocol can be considered a mature
standard with several implementations available, although
implementations from leading routers vendors are still not available
off-the-shelf. While focusing on reporting measurements, the IPFIX and
PSAMP specifications also set requirements on how IP traffic is
measured. The presentation will give an outlook on upcoming IPFIX
extensions and address issues of applying IPFIX to inter-domain traffic
measurement. |
Simon Leinen, (Switch): Flow-based Accounting and Charging at SWITCH
SWITCH provides Internet (IPv4 and IPv6) access and other services to
the Swiss academic community since 1987. Since the early days, it has
used a usage-based tariff for cost recovery. The current volume-based
scheme is in place since 2000, and is supported by flow-based accounting
(unsampled Netflow) from our border routers. I will present our
experiences with this mechanism, dwelling on some of the issues and
limitations, and discuss how such an approach can scale (or not) into
the future and/or to larger networks. If desired, our other applications
of the flow data for security and research can also be discussed. |
Paolo Lucente, (pmacct, KPN International): Typical use of IP traffic flow measurements in telecom operators
IP flow measurements are used among network operators for numerous
activities boiling down to financial considerations - among these
fair-usage policy compliancy at the access layer, destination-based
billing strategies, capacity planning, traffic engineering and Internet
peering can be enumerated.
After briefly introducing to such diverse landscape, the talk will focus
on ways to correlate IP flow measurements with inter-domain routing
information and benefits and challenges on how this can be used for
billing purposes and Internet peering. |
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