Re: [Softwires] 4rd Address Mapping - version-01

[Jacni Qin <[e-mail]>]

hi,

On 10/19/2011 7:33 PM, Maoke wrote:
> ..
>
>>
>>>         a single value over the domain or possible variable among
>>>         different shared IPv4 addresses? (to my understanding, one
>>>         address should have a common value of PSID length for all
>>>         the CEs sharing the address, right?)
>>         The number of L equals the number of Delegated Prefixes of
>>         different lengths totally within a given domain, which should
>>         be determined during IPv6 address planning.
>>
>>
>>     they are equal to each other. but which determines which, in or
>>     before the IPv6 address planning?
>     IMHO, I guess the length of Delegated Prefix settled in phase of
>     the native IPv6 address planning without considering anything
>     about IPv4 addressing, determines the L.
>
>
> ?? i suppose previously with your clarification you HAVE admitted your 
> consensus to my 1) ~ 4) as the logic of the operation, but now you 
> said "without considering anything about IPv4". may you clarify your 
> process with starting from the following example?
>
Sorry, maybe there was some misunderstanding between us.
I mean you don't need to consider IPv4 when try to decide the length of 
delegated prefix to be assigned to customer. Maybe it was appropriate to 
use the word "anything". ;-)
Something should be considered if you need multiple sharing ratios.

> i allocate:
>    CE1 2001:db9:8765:4320::/60
>    CE2 2001:db8:7654:3210::/60
> then the IPv6 address planning is finished according to your statement.
>
> then what information should i use to determine the L for each? you 
> mean the IPv6 address planning is enough?
>
Yes.


Cheers,
Jacni

> thanks,
> maoke
>
>     Cheers,
>     Jacni
>
>
>>     delegated prefix length decides PSID length (sharing ratio), or
>>     inversely? is it not that the sharing ratio is determined by how
>>     many CEs sharing a unique IPv4 address?
>>
>>     best,
>>     maoke
>>
>>         Cheers,
>>         Jacni
>>
>>
>