RE: Proposed way forward with the transition mechanisms

["Karen E. Nielsen (AH/TED)" <karen.e.nielsen@ericsson.com>]

Hi Alain,

I find it difficult to argue based on draft-ietf-v6ops-assisted-tunneling-requirements-00.txt given that this draft so clearly focuses on the full-fledged 
tunnelling functionality demanded by (perhaps ?) the ISP environment
and not the lightweight tunnelling function requested for the 3GPP environment.
Examples - just to pick a few: NAT traversal, prefix delegation, extensibility requirements of draft-ietf-v6ops-assisted-tunneling-requirements-00.txt. Neither of which can be found in the 3GPP v6ops documents, that is RFC 3574 and draft-ietf-v6ops-3gpp-analysis-10.txt.

I opt for standard track standardization of Isatap as it serves the needs of the 3GPP environment. In particular:

* It is simple and easy to deploy,
* It is lightweight network architecture wise, i.e. it
requests one additional infrastructure element only, namely the Isatap router.
* It provides a scalable and simple service discovery mech (DNS)
* Tunnel set-up protocol at client side is simple
* It is stateless and provides the most efficient tunnel-set up protocol there is at the server side (none)
* Ipv6 Address (/128) assignment and configuration is provided using simple and well-understood mech (IPv6 RS/RA)
* Keep-alive is achieved using simple and well-understood mechs (IPv6 RS/RA)
* It is "ready to use". There is no major open issues and it may be readily standardized.
* It is there, both on paper and in running code and it solves a pressing need in 3GPP

Karen


> -----Original Message-----
> From: owner-v6ops@ops.ietf.org [mailto:owner-v6ops@ops.ietf.org]On
> Behalf Of Alain Durand
> Sent: Friday, July 30, 2004 7:43 AM
> To: Karim El-Malki (AL/EAB)
> Cc: 'Soininen Jonne '; 'v6ops@ops.ietf.org '
> Subject: Re: Proposed way forward with the transition mechanisms
> 
> 
> 
> On Jul 29, 2004, at 3:39 PM, Karim El-Malki (AL/EAB) wrote:
> 
> > I agree with Jonne. ISATAP is the most promising solution
> > for 3gpp tunnelling
> 
> For the sake of the discussion, could the ISATAP proponents summarize
> why they think ISATAP is a better fit than a tunnel broker solution 
> based
> on draft-ietf-v6ops-assisted-tunneling-requirements-00.txt. in a 3GPP 
> environment?
> 
> 	- Alain.
> 
> 
>