RE: subtypes (was: HTTP digest and RADIUS; new version of the Sterman draft)

[<john.loughney@nokia.com>]

Hi Wolfgang,

> > I think that if Extension X provides the exact same functionality as VSA y,
> > what is the need to support Extension X?

> If VSA is identical to Extension X, you are right. But what if VSA y does not
> care about DIAMETER interopability and Extension X does? When I submitted
> draft-sterman-aaa-sip, one of the first question was about DIAMETER
> interopability. There was a problem that could be settled after some
> discussion. In this particular case, we found that a change in the
> DIAMETER SIP application draft was the best solution. With a VSA, this 
> valuable discussion wouldn't have happened.

I do think your update is an improvement, and that is a good thing.  Getting
the Diamatere SIP application to be RADIUS friendly is important as well. We
are probably moving foward on all of this, somewhat slowly ...

John

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