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From: MOORE@PS1.CS.CMU.EDU (Dale Moore)
Newsgroups: mod.protocols.tcp-ip
Subject: (none)
Message-ID: <8510212150.AA14371@UCB-VAX>
Date: Mon, 21-Oct-85 18:06:00 EDT
Article-I.D.: UCB-VAX.8510212150.AA14371
Posted: Mon Oct 21 18:06:00 1985
Date-Received: Tue, 22-Oct-85 01:18:58 EDT
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Reply-To: MOORE@PS1.CS.CMU.EDU
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Approved: tcp-ip@ucb-vax.arpa

I was looking into commercially available IP/TCP products for VMS.
Below is an excerpt of one candidates "IP/TCP Primer".

	INTERNET address are defined as having 4-tuples (or parts),
	[a.b.c.d].  The first address, a, stands for the actual network
	where your host is located.  For example, there could be a network
	coded as "128", supporting some number of ARPANET host systems.

	The second field, b, is the subnet of your host system.  For the
	purposes of this example, b would be equal to "30".  Each network,
	therefore, is divided into subnets.  As each network receives a
	packet, it checks to see which subnet the data is for and
	routes it accordingly.

	Address field c is the local network number of your network.  So,
	each sub-network is divided into another group of computer systems
	that are configured in a local network arrangement.  In the example,
	c is equal to "5".

	. . . . .

	Using the numbers assigned above, if someone on the INTERNET sent
	data to a system address of [128.2.5.3], The data would be delivered
	to system 3 on local network 5 on the subnetwork 30 lying on network
	128.

	Once you system has a unique address, testing the IP/TCP
	implementation can be accomplished with any (or all) of the
	approximately 500 hosts on the INTERNET.

The above is copied verbatim from their primer (The IP/TCP Primer October
1984 V1.14).  Given that the above is full of lies and misinformation, I
won't tell you the name of the company.  But their initials are TWG, and it
is the only IP/TCP code sold by DEC for VMS.

Would you by networking software from these folks?
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