Re: SUA: CLDT: RC Parameter

Hello Brian, May,

I think, in case of IPSP to IPSP model, there are two ASes (AS1 and
AS2), one at each side. For SE-IPSP implies activation of both ASes
via one ACTIVE message, the RC exchanged in the ACTIVE message shall
identify both ASes. Consequently RC1 = RC2. Since RC values are
allocated by SGPF, SGPF shall assign RC values consistently. Probably
the only feasible way to assign RCs is by provisioning for SE model.

I have some doubts about the case when an IPSP serves multiple ASes
and SE-IPSP model is in use. Is this situation possible, can AS1 talk
to AS3 and AS4

IPSP1 ----------------------------- IPSP2

AS1 <---------------------------------> AS3
                            |
AS2                     --------------> AS4


How can AS4 go inactive, while AS3 be active in SE model?

Thank you in advance

Ilie

On 5/31/06, Brian F. G. Bidulock <[email protected]> wrote:
> Hi Howard,
>
> Please see comments below...
>
> May, Howard wrote:                            (Wed, 31 May 2006 10:53:12)
> > Hi,
> >
> > The RC parameter is mandatory in CLDT messages.  Please can you check my
> > understanding of how this parameter should be used in the three
> > following situations.
> >
> > When a CLDT is sent from an SGP to an ASP the value this parameter
> > should be set to is the RC of the AS the message is for.  The ASP may
> > use this parameter for local distribution of the message.
>
> Yes.
>
> >
> > When a CLDT is sent from an ASP to an SGP the value this parameter
> > should be set to is the RC of the AS the message is from.  The SGP may
> > use this parameter to determine the Network Context applicable to the
> > CLDT.
>
> Yes, and any other restrictions or permissions that might be associated
> with the AS at the SGP (such as calling party address).
>
> >
> > When a CLDT is sent from an IPSP to an IPSP the value this parameter
> > should be set to is the RC of the AS the message is for.  The IPSP may
> > use this parameter for local distribution of the message.
>
> For SE-IPSP, the AS the message is for and the AS the message is from are
> the same.  For DE-IPSP, because messages are essentially sent from the SGPF
> to the ASPF in the criss-cross model, the AS is the As that the message is
> for just as in the SGP->ASP case above.
>
> --brian
>
> --
> Brian F. G. Bidulock
> [email protected]
> http://www.openss7.org/
>
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-- 
Ilie