Internet traffic measurement, analysis and control based on apptype1

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Internet Traffic Measurement&

AnalysisBased on App-type

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Prepared by :

Khatap

Mosab

Hassan

3what is the internet traffic?

Is the flow of data across the Internet. Because of the distributed nature of the Internet,

there is no single point of measurement for total Internet traffic. Internet traffic data from public peering points can give an indication of Internet volume and growth, but these figures exclude traffic that remains within a single service provider's network as well as traffic that crosses private peering points

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6Introduction to Internet Traffic Accurate traffic identification and

insightful measurements, form the foundation of network business intelligence and network policy control. Without identifying and measuring the traffic flowing on their networks, CSPs (Communicating sequential processes)are unable to craft new subscriber services, optimize shared resource utilization, and ensure correct billing and charging.

7Typical traffic classes

1) Sensitive traffic

Sensitive traffic is traffic the operator has an expectation to deliver on time. This includes VoIP, online gaming, video conferencing, and web browsing.

2) Best-effort traffic

Best effort traffic is all other kinds of non-deterimental traffic. This is traffic that the ISP deems isn't sensitive to Quality of Service metrics (jitter, packet loss, latency).

3) Undesired traffic

This category is generally limited to the delivery of spam and traffic created by worms, botnets, and other malicious attacks. In some networks, this definition can include such traffic as non-local VoIP (for example, Skype)

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If we don’t Measure, we don’tKnow What’s Happening !

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The Internet is an un-natural system, in widespread use. Its providers and users need to understand it! ISPs need to manage traffic loads,

detect unusual behaviour Researchers need to observe how

traffic behaves, so as to understand changes in traffic pattern

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The Internet is always changing.

we need alots of data, to ensure our measurement consistency.

we need to share our data, so others can verify our work.

11 There are many different measurement

techniques some of them are ‘direct,’ e.g: send a test

packet to measure transit time others are much less direct, e.g:

Packet dispersion to measure available bandwidth

Passive methods, e.g. observing links to measure properties: (sizes, lifetimes) of traffic flows

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App. categories of the packet classifiation

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How we measure internet traffic application

Various software tools are available to measure network traffic. Software like :

Argus

Cacti

cFosSpeed

FlowMon

LiveAction

NetBeez

NetLimiter

Wireshark

NetFlow

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The data collection and analysis

We use software wireshark to do it.

Wireshark is a free and open-source packet analyzer. It is used for network troubleshooting, analysis, software and communications protocol development, and education.

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Protocol Hirarchy Statistics

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I/O Graph with a filter http

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1. Measurement WG, APAN 26, Queenstown, 2008 - Nevil Brownlee.

2. http://en.wikipedia.org/wiki/Traffic_classification

3. Williamson, Carey (2001). "Internet Traffic Measurement". IEEE Internet Computing 5 (6): 70–74.