Subject: RE: [Pana] and network selection

From: Avi Lior <[email-masked]>
Date: Mon, 8 Nov 2004 17:29:45 -0500

Hi Alper,

See inline.

> -----Original Message-----
> From: Alper Yegin [mailto:[email-masked]] 
> Sent: Monday, November 08, 2004 4:41 PM
> To: 'Avi Lior'; 'Yoshihiro Ohba'; [email-masked]
> Cc: [email-masked]
> Subject: RE: [Pana] and network selection
> 
> 
> Hi Avi,
> 
> > Assuming AAA is working then:
> > 
> >   +---+     +---+     +----+   +----+             +----+
> >   |PaC|-----|PAA|-----|VAAA|---|BAAA|-------- o o |HAAA|
> >   +---+     +---+     +----+   +----+             +----+
> >   |<----VISITED NETWORK--->|   |<--ISP1 -->|      |<--Home
> isp2.com-->|
> > 
> > Given that the PaC selects isp1.
> > The VAAA (acting as EAP Authenticator) is using eap network 
> selection
> and
> > will present the PAC with a list of possible NAIs. (Keeping 
> it simple
> for
> > now)
> > The PaC selects one. The VAAA connects to the HAAA routing according
> to
> > the
> > PaC selection.
> > 
> > So really I don't see what is the purpose of ISP selection in PANA.
> 
>                               +----- BAAA(ISP1)
>                               | 
> PaC ------- PAA/NAS ---VAAA --+----- BAAA(ISP2)
>                               |
>                               +----- BAAA(ISP3)
> 
> The ISP discovery and selection allows the PaC to:
> - learn that ISP1, ISP2, and ISP3 are available
> - convey that it chose ISP1

If we also do EAP-based network selection and as you indicate (further
below) this still happens at VAAA. The EAP network selection and
authentication at the VAAA will always trump the PANA network selection.
Then what was the need for the PANA network selection in this case?

PANA N-Selection chooses ISP1 but EAP Network selection chooses ISP3. This
can happen right? 

> PaC may or may not have a subscription with ISP1. (when not, 
> there better be a business relation between the ISP1 and the 
> PaC's service provider).

> 
> > 
> > However, if during PANA discovery the PaC selects isp1.com and then
> the
> > Authentication phase happens with the BAAA of isp1.com.  That is,
> isp1.com
> > becomes the EAP Authenticator. Then that is entirely a different
> story.
> > Since now the isp1.com will present the PaC with a list of 
> networks to 
> > select.
> 
> In the current scheme the AAA traffic still goes through 
> BAAA(ISP1), but the EAP authenticator (NAS) does not change 
> or anyting.

> 
> > So PANA ISP Selection is the process of selecting the EAP
> Authenticaror
> > for
> > ISP authentication.
> 
> No.
> 
> > 
> > Likewise PANA NAP Selection is the process of selection the EAP 
> > Authenticator for Network Authentiction.
> 
> No. NAS stays the same. As far as the AAA is concerned, the 
> AAA routing is impacted.
> 
> Alper
> 
> 
> > 
> > _______________________________________________
> > Pana mailing list
> > [email-masked]
> > https://www1.ietf.org/mailman/listinfo/pana
> 

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