RE: Comments on "practical deployments"

[<jouni.korhonen@teliasonera.com>]

Hi,

> > > While proxies are widely used today to facilitate inter-domain 
> > > roaming, as far as I know, the combination of 
> inter-domain roaming 
> > > and EAP is very rare.

GSMA trialed (with a number of hotspot & GSM operators mainly in
Europe & Asia) EAP-based 802.11 roaming few years ago. This concentrated
mainly on EAP-SIM and EAP-AKA.

> > The FMCA is trialling exactly this.
> 
> Is this the Fixed Mobile Covergence Alliance?  

Yes.

[snip]

> >> For example, the vast majority of all IEEE 802.11 hotspot 
> deployments 
> >> use Web-based access (e.g. UAM), not EAP.
> > 
> > Yes. In fact, the use of EAP *prevents* a large number of business 
> > models for network access.
> 
> Could you expand on the problems?
> 
> > UMA leverages EAP and RADIUS, but it's buried deep in the network.
> 
> Yup.  Doesn't seem like this would require inter-domain proxies.

In the existing specs for 3GPP GAN (i.e. the current UMA) inter-operator
roaming is defined and reuses in a carbon-copy fashion 3GPP Interworking
WLAN EAP-based RADIUS roaming interface. However, operator business
models typically do not favor deployments where GAN would need
inter-operator
RADIUS interface.. at least I am not aware of any such deployments.

Jouni



> 
> 

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