Re: single/double exchange mode doubt

Brian,

On 7/16/07, Brian F. G. Bidulock <[email protected]> wrote:
>
> Ankit,
>
> Ankit Kumar Sharma wrote:                       (Mon, 16 Jul 2007
> 14:58:17)
> >
> >    Brian,
> >        My  apologies  for  not  making myself very clear. I have
> modified
> >    steps (2) and (3) of earlier scenario to make myself more clear
> below.
> >            ----------                       ------------
> >            |IPSP 1|----------------------|IPSP A |
> >            ----------                       -----------
> >    1)  IPSP1  is  serving AS-1(PC 111) and IPSP A is serving AS-A(PC
> 999)
> >    with rc=x. They are running happily in single exchange mode.
> >    2)  Now,  I want to add an additional AS at IPSP1 ex: AS2(PC 222).
> For
> >    AS2,  I  need  to  send  Registration  Request with my routing key
> and
> >    suppose  peer  side  i.e  IPSP-A  has  returned  rc=y  in
> Registration
> >    Response message.
> >    3)  After  getting  the  Registration  Response  from  IPSP-A,  I
> fire
> >    ASP-Active(rc=y)  from  IPSP-1 towards IPSP-A. Now, what should be
> the
> >    response from IPSP-A?
>
> ASP-Active-Ack(rc=y).


After sending ASP Active ack(rc==y), IPSP-A is saying to peer that it could
receive DATA with rc=y as well(at IPSP-A), but note that there is NO local
AS at IPSP-A which could be identified with rc==y. Now, if IPSP-A receives
DATA with RC=y, what should it do?

If I am not wrong then by sending ASP-Active-Ack(rc==y) from IPSP-A, I am
depicting as if, IPSP-A is working in double exchange mode.

Please look at the following scenario(assume single exchange mode):

            ----------                       ------------
            |IPSP 1|----------------------|IPSP A |
            ----------                       -----------

1) IPSP-1 wants to receive traffic for AS-1 and IPSP-A wants to receive
traffic for AS-A.

2) IPSP-1 sends the routing key of AS-1 through Registration request API,
and it receives RC=x from IPSP-A in Registration response.

3) IPSP-A sends the routing key of AS-A through Registration request API,
and it receives RC=y from IPSP-B in Registration response.

4) Now, IPSP-1 sends ASP-Active(rc==x). How does IPSP-A should respond?



--brian
>
> --
> Brian F. G. Bidulock
> [email protected]
> http://www.openss7.org/
>

Cheers,
Ankit

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