eap Mailing List: RE: RE: some comments to draft-adrangi-eap-network-discovery-and-selection-01.txt

[Adrangi, Farid (farid.adrangi]

Hi Tomas,

Yes, you are right that the latest version of the draft does not describe the 
syntax or processing of decorated NAI - because it is done in 2486bis.  So, 
regarding to your questions:

> >  > 1. Page 7, Decorated NAI; The text talks about that "It may
> >  > include information for several Mediating Networks to be
> >  > indicated on the route to the Home Service Network."
> >  > However, I don't seen anywhere else in the draft support when
> >  > the Decorated NAI includes multiple MN's. I assume we then
> >  > use the syntax
> >  > 'mediating-net-2!home-realm!username [at] mediating-net-1'. Is
> >  > this correct?

The syntax for a decorated NAI containing multiple intermediaries will be 
described in 2486bis (Jari Arkko's draft).  

> > >  > Also, I my understanding we then must specify that a AAA
> > >  > supporting this functionality only moves the first realm in
> > >  > the username (i.e. if the decorated NAI looks like
> > >  > 'mediating-net-2!home-realm!username [at] mediating-net-1' the AAA
> > >  > in mediating-net-1 must "re-shuffle" the NAI to
> > >  > 'home-realm!username [at] mediating-net-2') before the packet is
> > >  > passed on. Or am I missing something?

Yes, you are correct.  This funcationality needs to be supported by 
intermediary AAAs. This will also be described in 2486bis.  


> > >  > 2. Solution option 1 and 2 includes the con that "It MAY
> > >  > introduce a contention problem if space in the Type-Data
> > >  > field has already been used up for other purposes.  "
> > >  > Can you explain why this is not true also for option 3?

Yes.  First, the order of these options were changed in the latest draft so I 
am answering this questions w.r.t to the previous draft.  In option 1 and 2, 
the network information is conveyed on the initial EAP-Identity Request sent to 
the EAP peer.  So, if the contention becomes a problem if the space already 
contains some vendor specific content.  Where as, in the option 3, the 
mediating network information is conveyed on a subsequent EAP-Identity request 
introduced for this purpose only.

Thanks so much for reviewing the draft, and your comments/questions.  Please 
let me know if you have any further questions.

BR,
Farid

> -----Original Message-----
> From: Tomas Goldbeck-Löwe (KI/EAB) 
> [mailto:tomas.goldbeck-lowe [at] ericsson.com] 
> Sent: Tuesday, July 13, 2004 9:25 AM
> To: Adrangi, Farid
> Cc: eap [at] frascone.com; jari.arkko [at] piuha.net
> Subject: RE: [eap] RE: some comments to 
> draft-adrangi-eap-network-discovery-and-selection-01.txt
> 
> 
> Hi Farid,
> 
> Well, I did not find any answers to my two questions in the 
> draft you point out. Actually, I did not find neither of them 
> mentioned. 
> But I think the new draft looks good. (also, I don't see any 
> of the editorials!)
> 
> OTOH, I'd still be interested to hear your thoughts about my 
> questions.
> 
> Regards,
>       --> Tomas
> 
> > -----Original Message-----
> > From: eap-admin [at] frascone.com 
> > [mailto:eap-admin [at] frascone.com]On Behalf Of
> > Adrangi, Farid
> > Sent: den 8 juli 2004 19:05
> > To: Tomas Goldbeck-Löwe (KI/EAB)
> > Cc: eap [at] frascone.com; jari.arkko [at] piuha.net
> > Subject: [eap] RE: some comments to
> > draft-adrangi-eap-network-discovery-and-selection-01.txt
> > 
> > 
> > Thanks Jari for reposting this mail.
> > 
> > Hello Tomas,
> > Thanks for your comments and the issues that you pointed out. 
> >  After reading through your mail, I believe that all of your 
> > comments and issues have been addressed in the latest version 
> > of the draft : 
> > http://www.ietf.org/internet-drafts/draft-adrangi-eap-network-
> > discovery-01.txt .  Could you please confirm that?  Please 
> > let me know if you have any questions.
> > BR,
> > Farid
> > 
> > 
> > t
> > > 
> > > 
> > > 
> > > (I sending this e-mail on behalf of Tomas Goldbeck-Lowe who
> > > has reviewed Farid's draft, but his posting to the list
> > > failed. Sorry if you get this twice.)
> > > 
> > > Hi Farid and all,
> > >  >
> > >  > Reading the new version of the draft about EAP based network
> > >  > discovery and selection. Sending this email to let you know
> > >  > that I'm quite happy with draft as it looks now, and I
> > >  > believe it will fit into the 3GPP-WLAN architecture.
> > >  >
> > >  >
> > >  > Some questions though for my clarification:
> > >  > 1. Page 7, Decorated NAI; The text talks about that "It may
> > >  > include information for several Mediating Networks to be
> > >  > indicated on the route to the Home Service Network."
> > >  > However, I don't seen anywhere else in the draft support when
> > >  > the Decorated NAI includes multiple MN's. I assume we then
> > >  > use the syntax
> > >  > 'mediating-net-2!home-realm!username [at] mediating-net-1'. Is
> > >  > this correct?
> > >  > Also, I my understanding we then must specify that a AAA
> > >  > supporting this functionality only moves the first realm in
> > >  > the username (i.e. if the decorated NAI looks like
> > >  > 'mediating-net-2!home-realm!username [at] mediating-net-1' the AAA
> > >  > in mediating-net-1 must "re-shuffle" the NAI to
> > >  > 'home-realm!username [at] mediating-net-2') before the packet is
> > >  > passed on. Or am I missing something?
> > >  >
> > >  > 2. Solution option 1 and 2 includes the con that "It MAY
> > >  > introduce a contention problem if space in the Type-Data
> > >  > field has already been used up for other purposes.  "
> > >  > Can you explain why this is not true also for option 3?
> > >  >
> > >  >
> > >  > and some editorials:
> > >  > The following sections/paragraphs includes strange characters
> > >  > both on my screen and in my printout:
> > >  > a. Page 2, Introduction, second paragraph; the sentence in
> > >  > the parenthesis starting with  "(i.e., öRoaming Partnerö ..."
> > >  >
> > >  > b. Page 2, Section 1.1; "(referred to as the öEAP over 
> > > RADIUSö [4]) "
> > >  >
> > >  > c. Page 7, Access Point; "öA station that ..."
> > >  >            RADIUS Server; "öThis is a server ..."
> > >  >            Service Set ID; "öan identifier attached ..."
> > >  >
> > >  > d. Page 13, "[Option 3] û Use a subsequent ..."
> > >  >
> > >  > e. Page 17, Section 2.3, NAI Decoration; lots of funny 
> > > characters...
> > >  >
> > >  > f. Reference [10]; I believe it is missing the file name and
> > >  > 'work in progress', no?
> > >  >
> > >  >
> > >  > Kind regards,
> > >  >        --> Tomas
> > > 
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