From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <tuhs-bounces@minnie.tuhs.org>
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-1.0 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no
	version=3.4.2
Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53])
	by inbox.vuxu.org (OpenSMTPD) with ESMTP id 3d2be78f
	for <ml@inbox.vuxu.org>;
	Mon, 4 Feb 2019 21:22:59 +0000 (UTC)
Received: by minnie.tuhs.org (Postfix, from userid 112)
	id 07F959B8A7; Tue,  5 Feb 2019 07:22:58 +1000 (AEST)
Received: from minnie.tuhs.org (localhost [127.0.0.1])
	by minnie.tuhs.org (Postfix) with ESMTP id 78C9C9B899;
	Tue,  5 Feb 2019 07:22:31 +1000 (AEST)
Received: by minnie.tuhs.org (Postfix, from userid 112)
 id C15D89B894; Tue,  5 Feb 2019 07:22:28 +1000 (AEST)
X-Greylist: delayed 543 seconds by postgrey-1.36 at minnie.tuhs.org;
 Tue, 05 Feb 2019 07:22:28 AEST
Received: from mail.bitblocks.com (ns1.bitblocks.com [173.228.5.8])
 by minnie.tuhs.org (Postfix) with ESMTP id 682059B892
 for <tuhs@minnie.tuhs.org>; Tue,  5 Feb 2019 07:22:28 +1000 (AEST)
Received: from mob.bitblocks.com (mob.bitblocks.com [192.168.125.11])
 by mail.bitblocks.com (Postfix) with ESMTP id DD1A4156E414
 for <tuhs@minnie.tuhs.org>; Mon,  4 Feb 2019 13:13:17 -0800 (PST)
From: Bakul Shah <bakul@bitblocks.com>
Content-Type: text/plain;
	charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\))
Date: Mon, 4 Feb 2019 13:13:17 -0800
References: <20190204202947.69A4818C082@mercury.lcs.mit.edu>
To: TUHS main list <tuhs@minnie.tuhs.org>
In-Reply-To: <20190204202947.69A4818C082@mercury.lcs.mit.edu>
Message-Id: <2CFCAF1D-9EEC-43EB-AEC5-D58C30C5D923@bitblocks.com>
X-Mailer: Apple Mail (2.3445.102.3)
Subject: Re: [TUHS] OSI stack (Was: Posters)
X-BeenThere: tuhs@minnie.tuhs.org
X-Mailman-Version: 2.1.26
Precedence: list
List-Id: The Unix Heritage Society mailing list <tuhs.minnie.tuhs.org>
List-Unsubscribe: <https://minnie.tuhs.org/cgi-bin/mailman/options/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=unsubscribe>
List-Archive: <http://minnie.tuhs.org/pipermail/tuhs/>
List-Post: <mailto:tuhs@minnie.tuhs.org>
List-Help: <mailto:tuhs-request@minnie.tuhs.org?subject=help>
List-Subscribe: <https://minnie.tuhs.org/cgi-bin/mailman/listinfo/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=subscribe>
Errors-To: tuhs-bounces@minnie.tuhs.org
Sender: "TUHS" <tuhs-bounces@minnie.tuhs.org>

On Feb 4, 2019, at 12:29 PM, Noel Chiappa <jnc@mercury.lcs.mit.edu> =
wrote:
>=20
>> From: Grant Taylor
>=20
>> I'm not quite sure what you mean by naming a node vs network =
interface.
>=20
> Does one name (in the generic high-level sense of the term 'name'; =
e.g. an
> 'address' is a name for a unit of main memory) apply to the node =
(host) no
> matter how many interfaces it has, or where it is/moves in the =
network? If so,
> that name names the node. If not...

Xerox Network System (XNS) also had this property. A node had a
unique 48 bit address and each network had a unique 32 bit address.
Absolute host numbering meant you could move a host to another
network easily. IDP packet layout:


{checksum(2), length(2),
 transport ctl(1), packet type(1),
 dst net(4), dst host(6), dst socket(2),
 src net(4), src host(6), src socket(2),
 transport data(0 to 456), pad(0 to 1 byte)
}

IDP is @layer 3, same as IPv4 or IPv6.=