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packets</title></head><body>
<div>At 0:06 -0500 2011/03/01, Vint Cerf wrote:</div>
<blockquote type="cite" cite>correct, dave</blockquote>
<blockquote type="cite" cite><br>
<br>
</blockquote>
<blockquote type="cite" cite>On Mon, Feb 28, 2011 at 11:47 PM, Dave
Walden <<a
href="mailto:dave.walden.family@gmail.com"
>dave.walden.family@gmail.com</a>> wrote:<br>
<blockquote>At 07:50 PM 2/28/2011, Noel Chiappa wrote:<br>
<blockquote>I would assume/guess that the first well-known and
wide-scale use was in the<br>
</blockquote>
<blockquote>ARPANet.For the ARPANET:</blockquote>
<blockquote><br>
Frank Heart, Robert Kahn, Severo Ornstein, William Crowther,
David Walden,<br>
The Interface Message Processor for the ARPA Computer Network
(1970 Spring<br>
Joint Computer Conference, AFIPS Proc. Vol. 36, pp. 551.567,
1970)<br>
</blockquote>
</blockquote>
<blockquote><br>
<blockquote>Hi,<br>
</blockquote>
</blockquote>
<blockquote><br>
I'm not close to home right now, so I can't look up what ARPA's call
for bids (RFQ) to develop the ARPANET IMP's specified. I sort of
feel that it already specified that the host computers could send
messages that were variable length up to about 8,000 bits, and the
packet-subnet of IMPs broke these messages into about 1,000 bit
packets with the last packet in a message being possibly being shorter
than a full 1,000 bits. Anyway, that's the way, as I remember,
that we initially implemented it in the IMPs. I do remember that
there was a preconception of bi-modal message traffic with file
transfers being broken into 8,000 bit messages, and interactive
terminal traffic being messages of only 10s or 100s of bits, i.e., one
packet or less. I also think I remember that the (I think
24-bit) CRC on inter-IMP packets was calculated to have the desired
error detection rate based on 1,000 bit packets.<br>
<br>
Dave<br>
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