From: Steinar.Haug@delab.sintef.no (Steinar Haug)
Subject: Re: XTP-forum???
Followup-To: comp.dcom.lans.fddi
Organization: SINTEF DELAB, Trondheim, Norway.
Date: 3 Oct 92 13:11:34

> Is there any mailing list about XTP? 
> 
> i would desperatly need information on the structure
> of the interfaces from XTP  to the upper (application) layer
> and to the lower layer, maybe someone could give me some 
> pointers, where to search successful.
> (we want to implement XTP over Ethernet & FDDI on a 
> sun sparc 2 ) 

Here is a message from Rob Warnock regarding XTP. Yes, there is such a list.
However, it's been rather quiet lately. I'm working on an XTP implementation
myself, so I'd definitely like to see more activity on the list!

Please note that the info in Rob Warnock's message is slightly out of date,
as the XTP protocol spec is now at revision 3.6.

Also, there is a book about XTP, authored by Alf Weaver (weaver@virginia.edu)
and (I believe) some others. I have ordered it but haven't received my copy
yet...

Steinar Haug, system/networks administrator
SINTEF DELAB, University of Trondheim, NORWAY
Email: Steinar.Haug@delab.sintef.no, 
	sthaug@idt.unit.no, steinar@tosca.er.sintef.no
----------------------------------------------------------------------
From: rpw3@rigden.wpd.sgi.com (Rob Warnock)
Newsgroups: comp.protocols.misc
Subject: Re: What does XTP Stand For ?
Date: 25 Apr 90 08:33:51 GMT
Reply-To: rpw3@sgi.com (Rob Warnock)
Organization: Silicon Graphics, Inc., Mountain View, CA

In article <318@echbull.bull.fr> baux@ecbull.ec.bull.fr writes:
+---------------
| Any information will be welcome | Thanks, | Andre Baux, baux@ec.bull.fr
+---------------

XTP is "eXpress Transfer Protocol", a high-performance transfer protocol being
developed by Protocol Engines, Inc., as part of their Protocol Engines Project
which is developing VLSI chips to implement large portions of the protocol in
hardware.

[The term "transfer" was borrowed from the French GAM-T-103 standard, where
it refers to a single layer which includes both OSI Model layer 3 (network)
and layer 4 (transport) functions.]

XTP is a connection-oriented protocol, with state kept in the routers on
currently active routes (source/destination host pairs). Multiple connections
between the same pair of hosts [normally] share a route. The headers format
for XTP is designed to make routing and demultiplexing in a host very fast.
Connections can be long-lived, as in TCP, or as short as a single packet
in each direction ("datagram" operation). XTP provides a reliable multicast
mode, flow/rate/burst control, and message priority/scheduling (for use in
real-time systems). It borrows network layer (host) addressing (and thus
the registration authority) from any of several address families, including
DoD Internet ("IP"), Xerox XNS, or ISO.

A copy of the XTP protocol spec is free for the asking. You can get a current
"press kit" by writing/calling/faxing:

	Larry Green, President		Phone: (805)965-0825
	Protocol Engines, Inc.		FAX:   (805)687-2984
	1900 State Street, Suite D	Email:	xtp-request@pei.com
	Santa Barbara, CA  93101

The press kit includes the XTP Protocol Specification, Revision 3.4
(17 July 1989), but be sure to ask for it explicitly anyway.

A mailing list exists for those who are actively working with XTP. Write
to "xtp-request@pei.com" to be added to the list or for more information.

-Rob

-----
Rob Warnock, MS-9U/510		rpw3@sgi.com		rpw3@pei.com
Silicon Graphics, Inc.		(415)335-1673		Protocol Engines, Inc.
2011 N. Shoreline Blvd.
Mountain View, CA  94039-7311