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Diameter Protocol Tutorial In Plain English & Images

Diameter Protocol Tutorial In Plain English & Images. By Lenny Ridel , F5 Traffix Senior Director, Product Development. What We’re Covering Today. What is Diameter Protocol? Why not use other protocols? How does Diameter work? Who - clients, servers, agents

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Diameter Protocol Tutorial In Plain English & Images

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  1. Diameter Protocol TutorialIn Plain English & Images By Lenny Ridel, F5 Traffix Senior Director, Product Development

  2. What We’re Covering Today • What is Diameter Protocol? • Why not use other protocols? • How does Diameter work? • Who - clients, servers, agents • What - messages communicated? • Where does Diameter fit in NGN?

  3. What is Diameter? Standardized Way of Communicating AAA Authentication Authorization Accounting Defines Who communicates – D introduces agents What – Message types and format

  4. ?

  5. Signaling volume is exploding - only Diameter can handle it

  6. Who Communicates? Who are the Diameter Actors?

  7. Diameter Nodes Can Be Clients, Servers and/or Agents

  8. Relay Agents Aggregate Messages Before Passing Them On

  9. Proxy Agents Modify The Message

  10. Translation Agents Translate Between AAA Protocols In A Network

  11. What Do Messages Communicate?

  12. Diameter Creates Standard Messages & Content • Messages known by command codes • Show range of facial expressions – wink, smile, concern etc

  13. Command Codes • Version, length, flags… • Message’s IDs (hop-by-Hop & end-to-end)

  14. Mostly data contained in attribute-value pairs or AVPs Some metadata

  15. What About RADIUS?

  16. Limitations of RADIUS Advantages of Diameter • See Interlink PDF summary

  17. References • http://traffixsystems.blogspot.co.il/2011/06/diameter-for-technically-challenged.html • http://www.ibm.com/developerworks/library/wi-diameter/ • http://www.tektronixcommunications.com/sites/tektronixcommunications.com/files/assets/documents/spectra2-total-test-solution-for-ngn-datasheet.pdf • http://www.networksorcery.com/enp/protocol/diameter.htm • http://en.wikipedia.org/wiki/IP_Multimedia_Subsystem • http://www.interlinknetworks.com/whitepapers/Introduction_to_Diameter.pdf

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