Subject: RE: IP checksum

From: Emrich John G15538 <[email-masked]>
Date: Wed, 18 Aug 1999 13:43:29 -0500

Has anyone looked at doing something like TCP for transactions as in RFC
1379?

John Emrich

> -----Original Message-----
> From: John Leong [mailto:[email-masked]]
> Sent: Wednesday, August 18, 1999 1:24 PM
> To: Mikael Degermark
> Cc: [email-masked]; PILC mailing list
> Subject: Re: IP checksum
> 
> 
> 
> > Fortunately, it is rather simple to fix UDP to be an excellent
> transport
> > protocol for these applications.
> 
> Slightly aside from your IETF draft of UDP lite in doing partial
> checksum, I believe UDP in general needs work.  As it stands, it
> requires various applications to implement their own flow control
> protocols which increases the chances of people doing the wrong things
> (or not at all) to the detriment of well behaved TCP traffics and
> Internet stability.
> 
> It would be nice to see an UDP-LT (Lite) which is the same as 
> UDP today
> (with or without your partial checksum suggestion) and a UDP-BT (bulk
> trnasport) which has flow control but not jitter control (for
> simplicity) or error recovery (use TCP).  The LT version is to be used
> for transaction type traffic such as DNS while the BT version for
> multimedia stuff.   Having a standard UDP-BT will reduces the
> proliferation of various quesionable or work-in-progress flow control
> schemes.
> 
> Anyone else thought of doing similar thing?
> 
> Regards,
> John Leong
> --
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>