Subject: Re: [Sigtran] M2PA Clarification

From: Tom George <[email-masked]>
Date: Wed, 26 Jun 2002 17:43:44 -0500

It is an implementation matter whether to buffer the messages at M2PA or
put back pressure on MTP3. 

Jacob Heitz wrote:
> 
> Another option is to pass the backpressure onto MTP3.
> That is, to inform MTP3 that M2PA is unable to accept
> anymore data from MTP3 for sending.
> 
> [email-masked] wrote:
> >
> > Hi Brian/Tom...
> >
> > Can you please clarify the following doubt...
> >
> > From M2PA Draft 5
> >
> > Section 4.1.5
> >  "The peer M2PA shall cease transmitting messages to SCTP while its
> >   T6 timer is running, i.e., while the other end is Busy."
> >
> > This implies that once T6 Timer is started by M2PA, the data that
> > received from Local MTP3 must be buffered by M2PA till the time either it
> > receives a Busy End from Peer or T6 Expires.
> > If T6 expires, without receiving a Busy End from Peer M2PA, it  should
> > discard all the of the above buffers and mark the Link Out of Service.
> > Or else, if it receives Busy End from Peer while T6 is running, it dispatches
> > all the buffered Messages to the Peer.
> >
> > Is this understanding correct....
> > Can there be some supporting text in the Draft?
> >
> > Thanks and Regards
> > Anshoo.
> >
> > ----- Original Message -----
> > From: <[email-masked]>
> > To: <[email-masked]>
> > Sent: Wednesday, May 22, 2002 7:40 PM
> > Subject: [Sigtran] M2PA Clarification
> >
> > >
> > > Hi,
> > >
> > > Please clarify the following text from the Draft.
> > >
> > > 4.1.5 Level 2 Flow Control
> > >
> > > "The peer M2PA shall cease transmitting messages to SCTP while its
> > > T6 timer is running, i.e., while the other end is Busy."
> > >
> > > Does the above statement imply that M2PA should buffer the new data from MTP3
> > > Layer when T6 Timer is running or can M2PA reject all new Data.
> > >
> > > Thanks
> > > Anshoo.
> > >
> > >
> > > _______________________________________________
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> > > [email-masked]
> > > https://www1.ietf.org/mailman/listinfo/sigtran
> >
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> --
> // Jacob Heitz. Tel:510-747-2917
> 
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-- 
* Tom George          972-519-3168           [email-masked]   *
* PB2-1323       Intranet:  http://www.ssd.usa.alcatel.com/~tgeorge/  *
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