Re: SCTP Association and M3UA relation

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
> > >
> > > _______________________________________________
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> > >
> > >
> > >
> >
> >
> > --
> > Rgrds,
> > -Mahantesh
> > _______________________________________________
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> >
> >
> >
>
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>


-- 
Br,
Ambika Prasad Tripathy
Nethawk Networks
Cell: +91-94375 47730

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