RE: Real time applications on LTNs or 2.5/3G networks

>  Direct notifications from layer 2 for SCTP is kind
of layer violation. 

Yes it is. Unfortunately it becomes a MUST  at times for improving
application performance.


>  My question is this a feature defined in SCTP RFC or
something that SCTP implementations you cited have?

SCTP itself doesn't explicitly offer these features. It could be used to
acquire better insights into the state of the link and other details. It is
a matter of having the right hooks in place for acquiring the information.

Mohammed

--- Ali Mohammed-MALI1 <[email protected]> wrote:
> Hello Ruud,
> 
>  I will only speak for SCTP. It is available for
> Linux and FreeBSD platform. I am pretty sure there
> is a version for Solaris. Also, i agree that there
> can be signifcant improvement in application
> performance by notification from lower layers. The
> SCTP stack should provide you better hints about the
> state of the link, delay etc also you could have
> direct notifications from Layer2 to the application
> ( callbacks) to take proactive measures.
> 
> Mohammed  
>  
> 
> 
--behcet

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