Subject: RE: [Sigtran] M2PA V6: T7

From: Tolga Asveren <[email-masked]>
Date: Fri, 4 Oct 2002 10:30:30 -0400

Brian,

> -----Original Message-----
> From: Brian F. G. Bidulock [mailto:[email-masked]]
> Sent: Friday, October 04, 2002 9:29 AM
> To: Tolga Asveren
> Cc: [email-masked]'
> Subject: Re: [Sigtran] M2PA V6: T7
> 
> 
> Tolga,
> 
> RTO.min does nothing to limit the maximum amount of time that SCTP
> will wait for an acknowledgement.  I think you mean RTO.max.
[TOLGA] Yes, you are rigth, for the calculation of the maximum time, one has
to consider RTO.max.
> 
> Regardless, what values of RTO.min, RTO.max, Path.MaxRetrans and
> Association.MaxRetrans do you propose be used to effect the same
> as T7 of, say, 1 second?
[TOLGA] I would say  RTO.min = {A value, which is not too low for the
underlying IP network} RTO.max = 150ms
Path.MaxRetrans = 2   Association.MAxRetrans = 4   (multihoming with two IP
addresses)
> 
> (Bear in mind that a successful SCTP HEARTBEAT clears the peg
> counters and increases the delay without bound.)
> 
> --brian
> 
> Tolga Asveren wrote:                            (Fri, 04 Oct 
> 2002 08:37:20)
> > > 
> > > So how do you propose to do this with SCTP?
> > [TOLGA] With RTO.min, Path.MaxRetrans and 
> Association.MaxRetrans. IMO, layer
> > n+1 sets some requirements on layer n, but does not monitor 
> it. It is every
> > layers own responsibility, to guarantee that it meets its 
> requirements.
> > > 
> 
> -- 
> Brian F. G. Bidulock
> [email-masked]
> http://www.openss7.org/
> 
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