Re: [nemo] Some questions about the basic of NEMO ...

[Ryuji Wakikawa <[e-mail]>]

Hello Patrick

Try to read  draft-ietf-nemo-home-network-models-03.
Similar scenario is described in Section8.

ryuji


On 2005/07/19, at 10:56, Patrick Lam wrote:

> Hi Vijay,
>
> Thanks for your reply.  You are right that IPv6
> doesn't have NAT.  I was thinking NAT64 when I was
> typing, but I guess that won't be applicable to NEMO
> scenarios ... or should it be?
>
> Regarding MNN getting a CoA, I am just wondering the
> following scenario.
>
> Say, a MNN is associated with MR1 at the home network
> and moved together with MR1, then I guess it won't
> need a CoA in this case (because MR1 is handling all
> the handoff duties), right?  But then when it is
> handed off to a new MR2, it will need to get a CoA.
>
> As a result, as long as the MNN is associated with an
> appropriate MR (i.e., MR1), it will "feel" like at
> home, no matter where MR1 is.  On the other hand,
> whenever the MNN is not associated with the right MR
> (say, moved to MR2), it will "feel" like at a foreign
> network even MR2 is actually inside the home network
> of the MNN.
>
> It doesn't seem to be a correct interpretation.  Where
> did I misunderstand?
>
> Thanks again.
>
> Regards,
>
> Patrick
>
> --- Vijay Devarapalli <[e-mail]> wrote:
>
>
>> Patrick Lam wrote:
>>
>>> Hi,
>>>
>>> As I thought about NEMO more, more questions I
>>>
>> have
>>
>>> ... :)
>>>
>>> 1.  For the MNNs inside a MR, can they be NAT'ed?
>>>
>> Or
>>
>>> do they have to be addressed according to the MR's
>>> prefix?
>>>
>>
>> first of all, there is no NAT in IPv6.
>>
>>
>>> 2.  Under the definition of NEMO, can a MNN be
>>>
>> handed
>>
>>> off from one MR to another?  If so, the MNN will
>>>
>> have
>>
>>> to have a globally unique IPv6 address (i.e.,
>>>
>> can't
>>
>>> use NAT), right?
>>>
>>
>> the MNN will have a globally unique IPv6 address
>> from
>> the mobile network prefix advertised by the mobile
>> router. it is possible that the mobile network
>> prefix
>> is of the type described in
>> draft-ietf-ipv6-unique-local-addr-09.txt. in this
>> case,
>> the MNN's IPv6 address will not be globally
>> routable,
>> only inside the home network. this is not explicity
>> addressed in RFC 3963. as long the MNN stays put in
>> the mobile network, it will work.
>>
>>
>>> 3.  If the MNNs can be handed off from one MR to
>>> another, it seems like they will have to be
>>>
>> addressed
>>
>>> by a CoA as well, right?
>>>
>>
>> yes.
>>
>> Vijay
>>
>>
>
>
>
>
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