Re: modules of a mh solution (was RE: New multi6 draft: WIMP)

[Dave Crocker <dhc@dcrocker.net>]

marcelo,


>> I think there is an orthogonal issue to connection preservation.
mb> Locator discovery for *initial* contact is orthogonal IMHO

ok.


>> A host
>> needs to discover the set of addresses available to it. And it needs to
>> have a basis for choosing one. It would be nice for host to have a
>> discovery mechanism that did not involve manual configuration or running
>> a routing protocol listener.
mb> fully agree.
mb> do you have in mind something different than just plain trial and error?
mb> becuase i wouldn't want to modify external hosts, right?

I have a suspicion that you do not mean "trial and error for discovering
one's own list of addresses" but rather mean "trial and error as a basis
for choosing one"...

I think there need to be mechanisms for both learning of one's own
addresses and for helping decide which one to use.  The former is
essential in the near-term, I believe.  Without it, we cannot scale any
approach that makes the hosts aware of their multiple addresses.

Something akin to routing table information, to help a host choose among
the list of its own addresses, is important, but can be deferred.


>> I'll comment that I think the discussion of multihoming gets distorted
>> by treated mobility as an entirely separate topic.  Portions of each are
>> entirely separate from the other.  However some portions do overlap. By
>> pursuing them independently, we do not take advantage of the overlap.
mb> Well, i guess that some mh solutions can be used to provide mobility support
mb> but not all of them.

That is my point.

If we have two proposal that are roughly equal in their complexity,
utility, and the like, then the fact that one can also be used to
satisfy some mobility requirements ought to bias us in its favor.

At the least, this wider range of utility ought to be a significant part
of our evaluation among the proposals.

d/
--
 Dave Crocker <dcrocker-at-brandenburg-dot-com>
 Brandenburg InternetWorking <www.brandenburg.com>
 Sunnyvale, CA  USA <tel:+1.408.246.8253>