On 2012/04/03, at 18:07, Rémi Després wrote:

> 
> Le 2012-04-03 à 03:53, Satoru Matsushima a écrit :
> 
>> FYI, choosing MAP doesn't mean that committing to a 'single'. But choosing 
>> 4rd-u means that committing to a 'single'.
>> 
>> There're just transport variants, which are encapsulation, translation and 
>> new one we've never seen before. Proponents of the new one claim to unify 
>> transport only to the new one, which means that eliminating both 
>> encapsulation and translation variants of MAP because they say two choice of 
>> transport type would make confusion for operators.
> 
>> The new one is transparent than translation, but less than encapsulation.
> 
> If you would have a detailed scenario where ANY transparency difference could 
> be noticeable e2e between a MAP-E tunnel and a 4rd-U tunnel, this sentence 
> would be fair.
> However, you haven't shown such a scenario, and AFAIK you can't have one 
> because it doesn't exist.
> The above assertion, being wrong, is therefore misleading.
> 

I already noticed rfc5082 as a detail.


> 
>> I couldn't decide transport type to be unified with the new one.
> 
>> No evidence, no expertise, no experience for that.
> 
> But many of those who have no motivation to look for flaws that don't exist, 
> do understand that the design is safe.
> 

I can't understand what you mean. Let us study it in your BOF.


>> Do we need them to be sure in spite of we already have existing mature 
>> transport variants?
> 
> MAP-E+T isn't as mature as repeatedly claimed.
> MAP-T may be more imprecise than MAP-E in this respect, but both have known 
> bugs to be fixed (at least packet IDs of shared-addres CEs of MAP-T, and BR 
> hairpinning in MAP-E).
> 

thanks, the authors of map suite are working to improve the documents. Don't 
worry about encapsulation and translation.


> Besides, the exact list of MAP DHCPv6 parameters has yet to be finalized.
> 

Besides, 4rd-u is on the stage of pre-BOF discussion.

cheers,
--satoru
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