Lionel Morand DIME WG IETF 79 Diameter Design Guidelines Thursday, November 11, 2010 Lionel Morand.

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Presentation transcript:

Lionel Morand DIME WG IETF 79 Diameter Design Guidelines Thursday, November 11, 2010 Lionel Morand

Once upon a time… First version of the draft: May 2007… Last major update in Nov 2008!  At this time, decision to postpone till the completion of RFC 3588 bis Since this time: –RFC 3588 bis "almost" published –Agreement on new IANA rules –Feedback from operational deployment

What it should be about… Key deliverable to be used: –by Diameter application designers From IETF, vendors, SDOs –to clarify and/or reassess existing rules/recommendations that could be spread across specifications –to answer to the most frequent questions Raised during application design or Based on implementation and operational feedback –to avoid repeating misbehavior/error from the past in the future

Re-usability of applications What it DOES implies when one wants to re-use an existing application id What you can and cannot do Trade-off between "twisting" an existing application and creating a new one –According to the "new" IANA rules

Re-usability of command codes What it DOES mean when one wants to re-use an existing application id What you can and cannot do with existing command codes –According to the initial purpose of the command –according to the ABNF description Trade-off between "twisting" an existing command code and creating a new one –According to the "new" IANA rules

Re-usability of AVPs What it DOES mean when one wants to re-use an existing AVP code What you can and cannot do with existing AVP codes –According to the initial purpose of the AVP –According to the format of the AVP –According to the setting of the AVP flags Trade-off between "twisting" an existing command code and creating a new one –According to the "new" IANA rules

One or two "Things" to consider.. When designing a new Diameter application –Diameter used as AAA protocol or transport protocol? –What kind of Diameter application IETF standard vs vendor-specific application? For Internet community, SDOs, vendor-specific solution? –Transport and security choices based on the deployment environment TCP, SCTP? TLS, IPsec, DTLS,… nothing? –Functional architecture Roaming, need for Diameter Agents, Dynamic discovery, etc. –Command code ABNF description and AVP flag setting –Tips to preserve protocol extensibility

Next Step No need to restart from scratch –Existing draft used as a basis New version of the draft needed to: –Enhance the readability of the document –Update the current content based on the work completed on RFC 3588bis and IANA rules –Add missing information (if required)

Objectives Provide a new version of the draft before end of Receive and take into account feedback from the WG Launch a WGLC in early 2011 A published RFC for IETF80th

Thank you… No QUESTION No COMMENT Just… HELP –Volunteers in this key topic are welcome… even if not paid for that.