RE: [Pana] and network selection

Hi Yoshihiro,

> Network selection based on EAP occurs always after completion 
> of network selection in PANA in its discovery and handshake 
> phase (this is guaranteed because section 5.12.1 of 
> pana-pana-06 explcitly prohibits piggybacking EAP-Request in 
> PANA-Start-Request messsage). This means that network 
> selection based on EAP is only performed under the chosen ISP.

I am a bit confused here.  So let me ask you a few questions:

What is the purpose of ISP-Information?
How does the PAA know what ISP-Information to provide to the PaC?
If the PAA has a relationship with hunderds of ISPs does it send all the
ISPs?
How does the PaC select which ISP?

Note: the visited network may not have a direct relationship with the home
network 
So it will send a list of intermediaries to the PaC.  The PaC may not be
able to select the intermediaries because it wouldn't necessarily know the
routing.  It knows its home network for sure but it may not know other
relationships.

When we do EAP based authentication in AAA we use the User-Name the NAI to
determine how to route the AAA requests to the Home Network.  How is this
invisioned to work when PANA and AAA work together.

When we do the authentication part, the AAA will use the NAI that was
provided by the device to route the authentication requests.  This may be
totally different then the ISP selected during the discovery phase.

So what is the purpose of doing ISP selection in the discovery phase? 

> -----Original Message-----
> From: Yoshihiro Ohba [mailto:yohba@tari.toshiba.com] 
> Sent: Tuesday, November 02, 2004 9:32 PM
> To: Avi Lior
> Cc: 'Alper Yegin'; pana@ietf.org
> Subject: Re: [Pana] and network selection
> 
> 
> Hi Avi,
> 
> I think network selection in PANA (that is ISP selection) and 
> the network selection based on EAP (that is intermediary network
> selection) does not conflict each other for the following reason:
> 
> Network selection based on EAP occurs always after completion 
> of network selection in PANA in its discovery and handshake 
> phase (this is guaranteed because section 5.12.1 of 
> pana-pana-06 explcitly prohibits piggybacking EAP-Request in 
> PANA-Start-Request messsage). This means that network 
> selection based on EAP is only performed under the chosen ISP.
> 
> I agree that we should clarify somethign like this in the 
> PANA specification draft.
> 
> Regards,
> 
> Yoshihiro Ohba
> 
> 
> On Wed, Nov 03, 2004 at 03:22:46PM -0500, Avi Lior wrote:
> > 
> > Issues with Network Selection.
> > 
> > PANA provides its own network selection and EAP also provides a 
> > network discover mechanism 
> > (draft-adrangi-eap-network-discovery-05.txt)
> > 
> > These may conflict with each other.  Furthermore, the PAA 
> may not know 
> > that the EAP payload contains network discovery material.
> > 
> > What happens if both are used?  Is it something that PANA 
> needs to be 
> > concerned about? Do we need to say something about this in PANA?
> > 
> > 
> > 
> > 
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> > Pana@ietf.org
> > https://www1.ietf.org/mailman/listinfo/pana
> 

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