Re: SCTP Association and M3UA relation

I think its not required. Multihoming should give you the same results
unless you are trying to achieve SCTP layer redundancy.

-Ashish

On 11/29/06, Ambika Tripathy <[email protected]> wrote:
>
> Ashish,
>
> But for path redundancy Multihomed path for Asociation is there.
> My question is is there any need of multiple SCTP association for one
> ASP-SGP communication. RFC-3332 describes about M3UA layer keeps track of
> the underlaying SCTP associoations state but there is no such description
> for multiple Association for single ASP-SGP communication.
>
>
> On 11/29/06, Ashish Soregaonkar <[email protected]> wrote:
> >
> > I dont think this is the limitation, though having multiple associations
> > between the same nodes is of little help. If you want path redundancy, then
> > a single association can very well do that.
> > If a node is designed that way, I dont see a problem with having
> > multiple associations between two nodes. As the associations are mapped to
> > the same node pair, management messaging should not be considered
> > association specific. Consider it one ASP-SGP pair specific and then all
> > rules about duplicate messaging apply.
> > This has to be implementaion specific.
> >
> > -Ashish
> >
> > On 11/29/06, Mahantesh <[email protected] > wrote:
> > >
> > > *Ambika,*
> > > **
> > > *Between an SGP and an ASP?  Zero or one.  Two is not permitted.
> > > If a second connection is attempted to an SGP and the SGP knows
> > > that it is the same ASP (from the remote or local IP address(es)
> > > and port and configuration) it should refuse the connection.  If
> > > it cannot determine the ASP identity (or uniqeness) from these
> > > parameters, it will require an ASP Id.  If a ASP Up is received
> > > on two associations with the same ASP Id, the second should be
> > > refused with error Invalid ASP Id.  Note that an ASP or an SGP
> > > is not a piece of hardware or an IP host (although they are
> > > drawn that way in the examples), it can be a process or
> > > sub-process within a host.  As such, one host can represent
> > > multiple ASPs, but each must have only one association to each
> > > SGP.
> > > *
> > >
> > > *~! *
> > > *Mahantesh*
> > >
> > >  On 11/29/06, Ambika Tripathy < [email protected] > wrote:
> > >
> > > >  Hi All,
> > > >
> > > >     I have doubt regarding the SCTP association and M3UA link.Thedoubt is.
> > > >
> > > > Can we map multiple SCTP associations to a single M3UA(ASP) or there
> > > > is only one-to-one relationship between a M3UA layer and one SCTP
> > > > association.
> > > >
> > > > +----------------------------------------+
> > > > |                 M3UA                   |
> > > > +----------------------------------------+
> > > > |   Asso   |   Asso   |   Asso   |  Asso |
> > > > +----------------------------------------+
> > > >
> > > >
> > > >
> > > > --
> > > > Br,
> > > > Ambika Prasad Tripathy
> > > > Nethawk Networks
> > > > Cell: +91-94375 47730
> > > >
> > > > _______________________________________________
> > > > Sigtran mailing list
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> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > Rgrds,
> > > -Mahantesh
> > > _______________________________________________
> > > Sigtran mailing list
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> > > https://www1.ietf.org/mailman/listinfo/sigtran
> > >
> > >
> > >
> >
> > _______________________________________________
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> >
> >
> >
>
>
> --
> Br,
> Ambika Prasad Tripathy
> Nethawk Networks
> Cell: +91-94375 47730
>

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