Subject: RE: [Simple] simple-message-sessions

From: Adam Roach <[email-masked]>
Date: Mon, 11 Aug 2003 00:41:50 -0500

Dean Willis wrote:

> SCTP has huge advantages for inter-relay use.

Paul Kyzivat responded:

> I think we concluded that SCTP for inter-relay use still 
> has problems with blocking interactions between sessions
> because it has no way to apply back pressure on a per-stream
> basis.

Jonathan Rosenberg replied:

> The primary benefit of SCTP would be a reduction in the
> number of connections between relays.

No, it won't. That's exactly the point that Paul was trying to make.

If you start sharing connections, even over SCTP, you get in a jam
once any one of your downstream connections start backing up, since
it is impossible to push back on a single SCTP stream. Congestion
on one MSRP session causes collateral damage to unrelated MSRP
sessions. That isn't acceptable.

/a

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