Re: [Softwires] MAP and 4rd - Relationship with Single translation

[Xing Li <[e-mail]>]

Hi, Remi,

于 2012/2/10 18:23, Rémi Després 写道:
> Hi Xing,
> Good to have you coming in the (unfinished) technical analysis.
>
> I answered to Ole on his remarks, which you support, but not on 
> the following:
>
> You propose to have a line on "IPv4 to IPv6 communication (single 
> translation) supported", wit
>
> Let me therefore reiterate the wish to see an ISP use case, with its 
> Mapping rules, and with IPv6 prefixes of CEs that illustrate the 
> problem you see.

The CERNET2 is an IPv6-only core network. We provide stateless IPv4/IPv6 
translation between CERNET2 and the IPv4 core network (CERNET). The 
users can either use single translation directly, or add their own 
IPv4/IPv6 translor if double translation is required.

Is this answer your question?

Regards,

xing


>
> Regards,
> RD
>
>
>
>
> Le 2012-02-10 à 04:28, Xing Li a écrit :
> ...| | | | |
>>>>    |  5 | IPv6 web caches work for IPv4        |  Y  |  N  |  Y  |  N  |
>>>>    |    | packets                              |     |     |     |     |
>>> suggest you rename to "IPv4 to IPv6 communication (single translation) supported"
>>>
>>
>> (2) More clarification should be added here. I am not sure 4rd-H can 
>> support single translation.
>>
>> (a) According to (1), 4rd-H does not perform header translation 
>> defined by RFC6145.
>>
>> (b) In the softwire mailing list, it seems that 4rd-H cannot support 
>> single translation.  See the thread containing 
>> http://www.ietf.org/mail-archive/web/softwires/current/msg03324.html 
>> and other posts.
>>
>> (c) If 4rd-H cannot support single translation, then "IPv6 web caches 
>> work for IPv4 packets" requires special configurations, it cannot do 
>> IPv6 web caches for non 4rd-H packets.
>
> ...
>
>> (5) I would like to see the details of how 4rd-H handles ICMP and 
>> ICMP error messages. In the softwire mailing list there were some 
>> discussions. See the thread containing 
>> http://www.ietf.org/mail-archive/web/softwires/current/msg03324.html 
>> and other posts.Please add
>>
>> | 17 | Handle ICMP (RFC6145) | Y | n/a | ? | ? |
> ...
>