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From: CERF@A.ISI.EDU
Newsgroups: comp.protocols.tcp-ip
Subject: Re: What is a window (was: A New TCP Retransmission Algorithm)
Message-ID: <[A.ISI.EDU]21-Apr-87.07:51:49.CERF>
Date: Tue, 21-Apr-87 06:51:00 EST
Article-I.D.: <[A.ISI.EDU]21-Apr-87.07:51:49.CERF>
Posted: Tue Apr 21 06:51:00 1987
Date-Received: Wed, 22-Apr-87 02:57:27 EST
References: <brescia@ccv.bbn.com>
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 9

Mike,

While it is true that the ARPANET does not very many messages, when it did,
the NCP connections got hung up either because of flow control confusion
(lost allocates) or lost messages which were not retransmitted at the NCP level.
It was that observation, plus the addition of more lossy nets such as Ethernet
and packet radio that motivated many of the TCP features.

Vint