RE: 3gpp-analysis: Recommendation on tunneling in the UE

[Pekka Savola <pekkas@netcore.fi>]

On Tue, 18 Nov 2003 juha.wiljakka@nokia.com wrote:
> trying to catch up this interesting discussion and making some kind of summary:
> - not needing to refer to Unman scenarios&analysis
> - Karim provides text on tunneling (to be updated to revision -08)

To be seen on the list.

> - Pekka's concerns on ISATAP providing more features than we need => in
> that case, we should document which parts of ISATAP are necessary for
> the 3GPP case, i.e. making a "subset of ISATAP" may be the solution?
> Shall you, Karim, also consider this point when writing your text?

In addition to providing more features than we need, ISATAP is also 
ill-fit to the "separate administrative domains" -model we have here, see 
the other thread.

> Furthermore, I personally don't believe that configured tunnels make a
> feasible solution for this specific problem (even though they provide a
> good solution for some other scenarios). You must remember the high
> number of UEs and dynamic addressing. And any extra configuration effort
> isn't nice for the users. If you make the extra configurations using SMS
> (like configuring APN settings for different applications), that means
> one SMS more. The point is: IPv6 should be as easy as possible.

This may be because of an assumption that the user might actually have to
*configure* something.  That's not necessarily the case.  Setting up
configured tunnels could be completely automatic.  Let's try to figure out
this in the separate thread, "manual config of UE tunnel".

> And still: we prefer native IPv6 communication and describe the
> "tunneling in the UE" as an *optional* thing (that won't be needed any
> more after GPRS networks start to widely support IPv6). That should not
> make harm to anybody.

Uhh.. doesn't this imply the opposite?  Even if optional, we specify that
ISATAP may be used, hence all the vendors implement ISATAP?  I don't see
that as a useful advice.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings