PReserving ids when changing providers (was:RE: to be draft-ohta-multi6-8plus8-00.txt)

["marcelo bagnulo" <mbagnulo@ing.uc3m.es>]

Hi Noel,

Well, i think that providing stable ids (independent of the provider) is a
good approach not really becuase today things may be simpler but because we
can benefit from it in the future.

I mean, i guess we agree that renmbering when changing ISP is a must and so
obtaining a simple and cheap renumbering process is good.

Probably locators will be hardcoded in less places than today, so they will
be simpler to renumber and IDs will be hardcoded in some of the places that
ip are used today and perhaps in many others, since they will be used for
recognizing endpoints in apps and filters, acls and so on

So renumbering locators maybe simpler than renumbering IPs today, but
renumbering IDs may be quite complex since it may require lots of manual
configuration

IMHO, stable ids are good

Does this makes sense to you?

Regards, marcelo


> Not that I'm arguing *against* doing this, but I'm just curious
> as to what the perceived need is (for having the
> identity not change if you stop buying
> service from your old ISP and switch to a new one). Let me
> devil's advocate for a second...
>
> I mean, when you change ISP's, if you expect any incoming
> connections (i.e. if
> you're in a directory database with some fixed name) then you
> have to go into
> the database(s) (DNE, etc) and update it to show your new
> location. So what's
> the issue if you have to change the identity field too?
>
>
> I guess the answer is two-fold - and both parts assume that when
> you change
> your location, you don't need to do anything manual to get the
> new location
> into the computer which moved.
>
> First, iff you don't expect any incoming connections, then if
> your identity
> stays the same there is nothing to change in the moved computer. (If your
> identity changed, you'd have to get that into the computer after
> it moved. Not
> impossible, but an extra problem.)
>
> If you do expect incoming connections, you still don't have to
> change anything
> in the computer, just the DNS/etc record(s) - and if one day we
> get secure DNS
> with secure updates, presumably the moved computer could update the DNS
> automatically.
>
>
> Did I miss anything?
>
> 	Noel
>