Hi Masataka-san,

1.
Thank you for sharing your interesting experience with the JPIX trial service 
based on 464XLAT.
Could you, for clarification, describe in more details formats of XLAT prefixes 
in this trial? 

2.
Objectives of 464XLAT and 4rd-U look very similar (ref 
draft-despres-softwire-4rd-u-01).

Indeed:
- Both use "DHCPv6 prefix delegation or another method" to inform CLAT/CEs of 
their IPv6 prefixes.
- Both "can implement traffic engineering based on IPv4 source address and IPv4 
destination address" (a feature that, as noted in your draft, is missing in 
encapsulation).

OTOH, unless I miss something, 464XLAT doesn't provide incoming connectivity of 
CLATs in case of shared IPv4 addresses (while 4rd-U does provide it to CEs). In 
this respect 4rd-U seems functionally more complete.

Thoughts?


Regards,
RD
 
 


Le 27 oct. 2011 à 07:44, MAWATARI Masataka a écrit :

> Greetings Alain-san,
> 
> 
> Please let me make a presentation at IETF 82 Meeting.
> I would like to introduce the following draft as a v4->v6->v4
> translation experience in softwire working group.
> 
> ---
> Topic: "464XLAT: Combination of Stateful and Stateless Translation"
> Draft name: draft-mawatari-softwire-464xlat-01
> Time needed: 5-10minutes
> Presenter's name: Masataka Mawatari
> ---
> 
> This is a simple technique to provide IPv4 access service across
> IPv6 network just by using twice IPv4/IPv6 translation standardized
> in [RFC6145] and [RFC6146].
> 
> http://tools.ietf.org/html/draft-mawatari-softwire-464xlat
> 
> 
> Regards,
> Masataka MAWATARI
> 
> 
> * On Wed, 26 Oct 2011 18:22:04 +0200
> * Remi Despres <[email protected]> wrote:
> 
>> Hi Alain,
>> 
>> Can you please schedule a time slot for a 4rd-U presentation:
>> 
>> Title        : A Unified stateless solution for IPv4 residual Deployments 
>> (4rd-U)
>> Document: draft-despres-softwire-4rd-u-01
>> Duration: 20 min (incl questions, expected to be numerous)
>> 
>> Thanks.
>> RD
> 
> -- 
> Japan Internet Exchange
> MAWATARI Masataka <[email protected]>
> tel:+81-3-3243-9579
> 
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