[Mip4] RE: [Dime] RE: Issue 3: Diameter MIP4 Application vs. RADIUSArchitecture

["McCann Peter-A001034" <pete.mccann at motorola.com>]

Alper Yegin wrote:
> Pete,
>> No, I don't.  Putting the Registration Request in the AMR is a
>> feature. It allows the registration to happen in one round-trip.
> 
> Obviously it is a feature. But don't you think it is a bit of a hack?
> I mean, tunneling one protocol inside another for the sake of saving
> round-trips? For example, we could further reduce the round-trips by
> tunneling MIP4 inside EAP of network access authentication.   

I don't think it's a hack.  When we have Mobile IP being used
for access authentication I think it makes sense to carry the
RRQ in a Diameter application.  EAP is a different case because
then we have a separate protocol doing access authentication.

> I also understand that having to go to HAAA twice for each MIP RegReq
> is bothersome. But then, maybe we should re-consider the necessity of
> MN-FA authentication. Given that HA is going to authenticate the MN,
> does FA also need to do the same?   

The FA and HA might be part of different administrative domains.
I think the FA has just as much reason to authenticate the MN as
the HA.

> Alper

-Pete


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