Re: single/double exchange mode doubt

"Brian F. G. Bidulock" <[email protected]> Tue, 17 Jul 2007 03:49:45 -0600

Newsgroups	gmane.ietf.sigtran
Organization	http://www.openss7.org/
Message-ID	<[email protected]>

Ankit,

Ankit Kumar Sharma wrote:                   (Tue, 17 Jul 2007 11:31:59)
> 
>    Where have I written that ASP-Active is sent by IPSP-A for rc=y?
>    For  rc=y,  ASP-Active  is  sent from IPSP-1 towards IPSP-A(Please see
>    statement (3) above).
>    Following diagram gives a much clearer view of this scenario.
>          +----+                                               +----+
>          |AS-1 |                                             |AS-A |
>          |rc=x |                                              |rc=x |
>          +----*                                               *----+
>                \\                                            //
>                  \\                                         //
>                    \\                                      //
>                      *------+                   +------+/
>                      |IPSP-1+--------------+IPSP-A|
>                     /*------+                   +------+
>                   //
>                 //
>           +----*
>           |AS-2 |
>           |rc=y |
>           +-----+
> 

In SE mode an AS exists at both ends of the association or
not at all.  rc=x is valid in you diagram by rc=y is not.

If an AS with rc=y does not exist at IPSP-A, then it will
not be sending ASP-Active(rc=y) to IPSP-1.

Put an AS-B(rc=y) at IPSP-A and your problems vanish.

--brian

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