Subject: [Tsvwg] RE: [SCTP]Congestion Control Parameters

From: Tuexen Michael <[email-masked]>
Date: Mon, 28 Oct 2002 12:21:54 +0100

Hi Andrea,

in SCTP terminology a path towards a peer is a transport address.
An outgoing interface is NOT considered.

Best regards
Michael

Michael Tuexen   Tel.:   +49 89 722 47210
Siemens AG       Fax:    +49 89 722 48212
ICN WN CC SE 7   e-mail: [email-masked]

> -----Original Message-----
> From: Andrea Senatore [mailto:[email-masked]]
> Sent: Monday, October 28, 2002 10:39 AM
> To: [email-masked]; [email-masked]
> Subject: [SCTP]Congestion Control Parameters
> 
> 
> Hi to all,
> I have a confusion on Section 7.1 of RFC 2960......
> 
> 
> 
> <SNIP>
> SCTP is designed to establish robust communication 
> associations between 
> two endpointeach of which may be reachableby more than one transport 
> address. Potentially different addresses may lead to different data 
> *paths* between the two endpoints, thus ideally one may need a 
> *separate* set of congestion control parameters for each of 
> the *paths*.
> <SNIP>
> ......
> <SNIP>
> The sender keeps a separate congestion control parameter set 
> for each of 
> the destination address it can send to (*not* for each 
> source-destination *pair* but for each *destination*).
> <SNIP>
> 
> I don't understand.... "one need a *separate* set of 
> congestion control 
> parameters for each of the *path*, and then keeps this set *only* for 
> each destination address". 
> CWND, RTO, RTT, etc., depend upon used path and *not* upon 
> destination 
> address.
> When host send packets through a different interface but at same 
> destination address this parameters must change because the 
> path change...
> 
> Best rgds
> 
> -- Andrea
> ========================================================
> Andrea Senatore,     
> Mail:    [email-masked],
> Address: CoRiTeL c/o Università degli Studi di Salerno,
>          Facoltà di Ingegneria,  via Ponte Don Melillo,
>          84084 - FISCIANO (SA) - Italy
> Tel:     +39 089 964012
> Fax:     +39 089 964010
> ========================================================
> 
> 
> 
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