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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 TutorialIn 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 • What - messages communicated? • Where does Diameter fit in NGN?
What is Diameter? Standardized Way of Communicating AAA Authentication Authorization Accounting Defines Who communicates – D introduces agents What – Message types and format
Translation Agents Translate Between AAA Protocols In A Network
Diameter Creates Standard Messages & Content • Messages known by command codes • Show range of facial expressions – wink, smile, concern etc
Command Codes • Version, length, flags… • Message’s IDs (hop-by-Hop & end-to-end)
Mostly data contained in attribute-value pairs or AVPs Some metadata
Limitations of RADIUS Advantages of Diameter • See Interlink PDF summary
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