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From: fair@ucbarpa.berkeley.edu (Erik E. Fair)
Newsgroups: net.dcom
Subject: Re: Need pointers to Internet, Arpanet 1822, X.25 standards...
Message-ID: <10592@ucbvax.ARPA>
Date: Wed, 9-Oct-85 04:43:34 EDT
Article-I.D.: ucbvax.10592
Posted: Wed Oct  9 04:43:34 1985
Date-Received: Sat, 12-Oct-85 13:30:19 EDT
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Organization: University of California at Berkeley
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In article <1062@trwrdc.UUCP> frith@trwatf.UUCP (Lord Frith) writes:
>
>Right now I'm involved in a project that will network several
>machines together using TCP/IP and X.25 protocols.  Can anyone
>tell me where I might find specs detailing the ues of the following
>protocol standards...
>
>UDP		User Datagram Protocol
>RFC 768	Packet standard of some sort?
>X.25		Where can one obtain specs for this?
>Arpanet 1822	Any relation to TCP/IP?
>
>And what is this new NBS TP-4 protocol?  I also hear there is
>a new internetwork protocol coming?

RFC768 is `Request For Comments' #768, and it is the specification
document for UDP, the User Datagram Protocol, which is one of a suite
of protocols that are implemented on the ARPA Internet. The other
immediately relevant documents are:

RFC791 - Internet Protocol (IP)
RFC792 - Internet Control Message Protocol (ICMP)
RFC793 - Transmission Control Protocol (TCP)
RFC904 - Exterior Gateway Protocol (EGP)
RFC943 - Assigned Numbers
RFC944 - Official Protocols

This list is not exhaustive; RFC944 contains pointers to other
documentation and protocol specifications. Both RFC943 and RFC944 are
the current versions of the `Assigned Numbers' and `Official Protocols'
lists, however, they are updated with reasonable regularity, so you
should be sure to ask for the latest copy of each.

BBN Report 1822 is the hardware and software specification for the
Host-IMP interface in the ARPA Internet.  You can think of it being
equivalent to the Ethernet LAN specification.

All of the documents that I mention here are available in hardcopy from

	Network Information Center
	Telecommunications Sciences Center
	SRI International
	333 Ravenswood Avenue
	Menlo Park, CA  94025

They can also be fetched in electronic form by sites that are on the
ARPA Internet from SRI-NIC.ARPA (The Network Information Center).
The NIC staff is reachable at NIC@SRI-NIC.ARPA.

4.2 BSD (Berkeley UNIX) comes with a complete implementation of the
IP/TCP protocols, and many companies have used this as a base to get
into networking quickly, be they in hardware (e.g. CMC, Exelan) or
software (e.g. UniSoft, The Wollongong Group).

	I hope this helps,

	Erik E. Fair	ucbvax!fair	fair@ucbarpa.BERKELEY.EDU

P.S.	For further edification on the subject of ISO/CCITT vs.
	ARPA Internet, read

		The Elements of Networking Style
		M. A. Padlipsky
		ISBN 0-13-268129-3 01
		Prentice-Hall, Inc., Englewood Cliffs, NJ 07632
		Published in 1985