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INTERMON
Advanced architecture for INTER-domain quality of service
MONitoring, modelling and visualisation
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| Type of Project : | European Commission "Information
Society Technologies" (IST) 5th Framework |
| Partner : | 
Salzburg Research, Advanced Network Center, Salzburg Austria Telecom Italia
Laboratories, Torino, Italy University of
Berne, Berne, Switzerland University of
Dortmund, Dortmund, Germany Waterford Institute
of Technology, Telecommunications, Software & Systems Group, Waterford,
Ireland Fraunhofer Institute
for Open Communcation Systems - FOKUS, Berlin, Germany Siemens Austria,
Program and system Engineering PSE / IP Networks, Vienna, Austria Deutsche Telekom,
T-Systems Nova, Berlin, Germany Telefonica, Research
and development, Madrid, Spain NEC Europe Ltd.,
Network Laboratories, Heidelberg, Germany Budapest University
of Technology and Economics, Budapest, Hungary Consorzio Interuniversitaro
Nazionale per l'Informatica - CINI, Torino, Italy |
| Duration : | April 2002 until March 2004 |
| Intermon is supported by the EC within its IST programme. The aim of INTERMON is to develop a novel scalable inter-domain QoS architecture with integrated monitoring, modelling, simulations and visual data mining components that use a common distributed QoS database with policy-controlled data collection. The INTERMON architecture will offer Internet Service Providers (ISPs), access technologies manufacturers, and application users an integrated environment for a wide set of tasks like inter-domain QoS management, volume-based charging, inter-domain traffic engineering, network planning and inter-domain traffic profiling. So far, NEC major contribution to the project is the implementation of a passive flow meter compliant to the IETF IPFIX protocol. The INTERMON project is to enhance the inter-domain QoS and traffic analysis in large-scale, multi-domain Internet infrastructures. To this purpose, the INTERMON project defines, designs and implements a scalable architecture to provide both telecom operators and corporate users with a set of services that, in an automated fashion, collect, process and present information about network status (i.e. network topology, traffic and Quality of Service) and SLA fulfilment, in both an intra-domain and an inter-domain scenario. By using visual data mining techniques, INTERMON users can easily and efficiently access the information they need. The core of the INTERMON architecture is a large, distributed information base, which collects data provided by measurement and simulation tools and by analytical models. The main components in the INTERMON architecture are the following: |
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 INTERMON architecture
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| NEC is active in almost all project's work packages and contributed to set the general requirements and to the definition of the INTERMON architecture. The major activities are however related to traffic measurements. In particular, NEC has been active in two IETF Working Groups, namely IP Flow Information eXport (IPFIX ) and Packet Sampling (PSAMP). The former aims at standardizing the export of flow measurements from a measurement point to a collector, while the latter was established to define a standard set of capabilities for network elements to sample subsets of packets. The second major NEC's contribution to the project is the implementation of a flow meter compliant to the IETF IPFIX specification. | ||
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| The IETF
IPFIX Working Group has been established with the goal of standardizing
the export of IP flow measurement results from a monitoring station (meter)
to a collector, i.e. a recipient of the measurements results. This standardization
is necessary to achieve an acceptable level of interoperability among equipment
from different vendors (e.g. the meters may be embedded into the routers,
and normally a collector will receive messages from more than one meter)
and to support the development of generalized flow analysis tools. Flow level data bring information that is certainly less complete than the one obtainable by packet level measurements; however, it is sufficient for a number of applications, including accounting, network planning, traffic engineering and attack detection. In particular, the last two require processing information in real time, which would be difficult to run directly on large packet traces. A further major benefit offered by flow measurements is that they generate much smaller data sets, therefore achieving a higher scalability, especially relevant in large, heavily used networks. Within the INTERMON project, NEC developed an IPFIX compliant flow meter, which attempts to address scalability issues, both in terms of number of monitored flows and packet input rate. It consists of two main components, the "meter" itself and the "collector", with the meter sending to the collector messages, at regular configurable intervals, in the format defined in the IPFIX standard. These messages contain flow measurement results. The IPFIX meter allows measuring the volume of traffic observed for a certain flow from the beginning of the measurements until the time of the last report. IPFIX provides a very flexible flow definition [3], allowing to perform measurements at very different levels of granularity, ranging from the total traffic flowing on a link to the single stream (for instance a single VoIP call). |
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IPFIX flow meter architecture and possible
measurement scenario
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| Last modified 01-Sep-2010 |
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