Re: [netext] Consensus call: Work on specifying prefix delegation for Proxy Mobile IPv6?

[Alexandru Petrescu <[e-mail]>]

Le 18/08/2011 18:14, Sri Gundavelli a écrit :
> Alex:
>
> If I may comment.
>
>
>> Please specify whether this prefix delegation feature is for the
>> goal of
> supporting Network Mobility with PMIP?
>
> #1 Implies, mobility for the delegated prefixes

Hm.  I thought it was only for initial assignment of prefixes (DHCP),
not for mobility (PBU). I.e. assign prefix(es) upon initial attachment,
with DHCP, and then do PBU to support mobility.

>> Or is it to assign the HNP to the Mobile Host (not necessarily to
>> assign
> MNP for NEMO Mobile Router)?  The two goals are distinctive IMHO.
>
> Assigning HNP to mobile = mobility + delegated prefix (Same as #1)

I am not sure.  Initial assignment is different than PBU upon each
movement.  And the PMIP spec has a need (IIRC) to assign that HNP somehow.

> #2 Assigning MNP to NEMO Mobile Router = RFC3963. NEMO MR per
> definition is CMIP enabled.

Yes, NEMO MR by definition is CMIP enabled (and CMIP/NEMO does not
assign MNP to MR).

I meant to say that PMIP may need, in some cases only, to assign an HNP
for MR (HoA) _and_ an MNP for the LFNs behind MR.  In some cases these
two prefixes are different.

> So, the draft is supporting #1.

Does the draft imply that the same delegated prefix is used to form
addresses for LFNs _and_ to form the HoA of MR?

Alex