Michael,

My assumption was that (outside BRSKI) the Pledge was sold to the owner
of Domain A, and the MASA knew this (and the identity of the Registrar
for A).  One of the students that I presented ANIMA concepts to asked
the question, "What happens if the Pledge chooses the "wrong" Proxy?"  I
believe that I now have enough information (from the discussion that you
added at the bottom) to answer his question.  After exploring this a bit
more, I may have a suggestion for an addition to the text, to forestall
such questions in the future.

Thank you for your response.

  Bill

On 03/12/2017 11:26 AM, Michael Richardson wrote:
> 
> William Atwood <[email protected]> wrote:
>     > I have been reading the BRSKI I-D.  While the I-D is pretty clear as to
>     > what happens when everything goes as planned, I am finding it very
>     > difficult to understand what will happen when a Pledge contacts a
>     > Registrar for a different domain.
> 
> By definition, the pledge hasn't joined a domain yet, so question doesn't
> make sense actually.  There isn't a "different domain" yet.
> 
>     > Consider the following scenario:
> 
>     > Domain A                         Domain B
>     > ..............................   ...............................
>     > .  ---------                 .   .                  ---------  .
>     > .  | Reg A |                 .   .                  | Reg B |  .
>     > .  ---------                 .   .                  ---------  .
>     > .                            .   .                             .
>     > .                            .   .                             .
>     > .               -----------  .   .  -----------                .
>     > .               | Proxy A |  .   .  | Proxy B |                .
>     > .               -----------  .   .  -----------                .
>     > ..............................   ...............................
> 
>     > ----------
>     > | Pledge |
>     > ----------
> 
>     > A Pledge is at the edge of Domain A (which it should join) and has
>     > discovered Proxy A.  It is also at the edge of Domain B, and has
>     > discovered Proxy B.  It then begins the steps outlined in Figure 2, and
>     > by chance chooses to contact the Registrar offered by Proxy B.
> 
>     > While I understand that this attempt to register will fail, it is not
>     > clear at what point the Pledge will realize that this is the wrong
>     > Registrar, and move on to the next discovered Proxy.  Clearly the Proxy
>     > does not know; it is only a conduit.  Does the Registrar have enough
>     > information, or is it only after the voucher is issued (or not issued)
>     > by the MASA that the decision can be made?
> 
> It is only after the voucher has been issued that the pledge knows if it can
> join a particular domain.  In the case of nonce-ful logged proximity (no
> sales channel integration), the MASA will assign the pledge to whichever
> domain the pledge talks to.
> 
> If there is a "correct" domain, and the MASA knows about it, then it will
> only issue a voucher that way.  An attempt by the "wrong" domain to register
> the pledge will result in no voucher.
> 
> 
> --
> Michael Richardson <[email protected]>, Sandelman Software Works
>  -= IPv6 IoT consulting =-
> 
> 
> 

-- 

Dr. J.W. Atwood, Eng.             tel:   +1 (514) 848-2424 x3046
Distinguished Professor Emeritus  fax:   +1 (514) 848-2830
Department of Computer Science
   and Software Engineering
Concordia University EV 3.185     email:[email protected]
1455 de Maisonneuve Blvd. West    http://users.encs.concordia.ca/~bill
Montreal, Quebec Canada H3G 1M8

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