XTP: A better TCP than TCP

XTP: A better TCP than TCP

[Jordan Mendelson]

Hello all,

I was just reviewing http://www.mentat.com/xtp/xtp.html and
http://www.ca.sandia.gov/xtp/. XTP looks like a very interesting protocol. 

It provides all the features of TCP, plus built-in realiable multicasts, better
speed over networks with packet loss, better speed overall, maximum bandwidth
limiting built-in, and a few other features which make it noteworthy.

It appears that they have defined a few protocols over XTP already, including
SMTP and FTP. 
Is there any projects out there to add XTP to the standard linux kernel?


Jordan

--
Jordan Mendelson     : http://jordy.wserv.com
Web Services, Inc.   : http://www.wserv.com

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

Re: XTP: A better TCP than TCP

[Matthew Wilcox]

On Wed, Jun 02, 1999 at 09:38:59AM +0100, Philip Blundell wrote:
> >I was just reviewing http://www.mentat.com/xtp/xtp.html and
> >http://www.ca.sandia.gov/xtp/. XTP looks like a very interesting protocol. 
> 
> I did some work with XTP a few years back.  It's interesting but it's a very 
> heavyweight protocol compared to TCP.  It tries to be all things to all men 
> and it's debatable whether it really succeeds.
> 
> It would certainly be worth having in the kernel, however.

I think a much more interesting protocol to have in the kernel would
be Bell Labs' IL.  It's implemented in Plan 9, and they say they are
very happy with its performance.  It's a sequenced packet protocol,
ideal for NFS, CORBA messages and pretty much anything which currently
either implements its own out-of-order + retransmit strategy over UDP
or puts packet boundaries into TCP.

There's a description of the protocol at
http://plan9.bell-labs.com/plan9/doc/il.html
I have the barest bones of a start at a linux implementation of it,
if anyone wants to collaborate :-)

-- 
Matthew Wilcox <willy@bofh.ai>
"Windows and MacOS are products, contrived by engineers in the service of
specific companies. Unix, by contrast, is not so much a product as it is a
painstakingly compiled oral history of the hacker subculture." - N Stephenson

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

Re: XTP: A better TCP than TCP

[Vince Lo Faso]

Greetings,

I've been working on an XTP implementation for Linux for some time
(and will be the first to admit that I'm order due for releasing
it publically).

I recently  ported it to kernel 2.3.x and am in the process of (re)sending
a patch to David.

I'm doing this strictly on a volunteer basis, which means I can respond to
emails
during the evenings and have limitted time for its development--but unlimitted

interested in its growth and potential.  More info will follow.

Quick synopsis of XTP:

XTP is quite flexible and versatile, capable of offering UDP-like and TCP-like

services--and everything in between--in one protocol stack.  However, its
flexibility
is also its weak point.  There is little public
data-experience-testing-implementation
on making XTP work in an IP environment, hence this XTP-Linux project.
There are also several transport issues that need to be explored in an XTP/IP
environment.

If anyone is really interested in this and wants to help out, let me know
offline.

Thanks,

Vince.


"David S. Miller" wrote:

>    Date:        Tue, 01 Jun 1999 17:10:30 -0400
>    From: Jordan Mendelson <jordy@wserv.com>
>
>    Is there any projects out there to add XTP to the standard linux
>    kernel?
>
> There is someone who is working on XTP/Linux and keeps sending me
> patches, but they always need massive formatting cleanups before I can
> apply them and then he disappears again for a few months.
>
> This is not necessarily his fault, he may not have the time to finish
> up and submit patches cleanly, but until _someone_ does this work I
> cannot even put his work in progress code into the tree.
>
> Later,
> David S. Miller
> davem@redhat.com
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.rutgers.edu
> Please read the FAQ at http://www.tux.org/lkml/


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/