<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Perhaps you can explain that the term "EFFECTIVELY multicast” means to you, and how it applies to BitTorrent. Every time I’ve looked at it in Wireshark I see nothing but unicast. <div class=""><br class=""></div><div class="">RB<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Feb 26, 2019, at 10:01 AM, Miles Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="">mfidelman@meetinghouse.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
<div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Well, that's not how it's supposed to work. Or claimed to work.<br class="">
</p>
<div class="moz-cite-prefix">On 2/25/19 8:27 PM, Richard Bennett
wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:DF2F5D32-F5E7-4012-86EE-AD5C6FBD6384@bennett.com" class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
Naw, it’s all unicast with plenty of redundant traffic moving
along long routes. <br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On Feb 25, 2019, at 5:49 PM, Miles Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="" moz-do-not-send="true">mfidelman@meetinghouse.net</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" class="">
<div text="#000000" bgcolor="#FFFFFF" class=""><p class="">That's not what anybody said. It's
EFFECTIVELY multicast - avoiding redundant traffic when
more than one destination is downloading the same file,
at the same time. That's its whole point. (Or as
someone else put it, it's a caching mechanism.)<br class="">
</p><p class="">Miles<br class="">
</p>
<div class="moz-cite-prefix">On 2/25/19 4:24 PM, Richard
Bennett wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:05BFAD28-1DCF-49D5-8B09-EF32ADB33FF1@bennett.com" class="">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" class="">
Bittorrent doesn’t use multicast.<br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On Feb 25, 2019, at 1:42 PM, Miles
Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="" moz-do-not-send="true">mfidelman@meetinghouse.net</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
<div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Well yes, but torrent is a
distribution mechanism - it's not an
infrastructure for maintaining or mirroring
files. It's essentially another, sometimes
more efficient, option for click-to-download
(e.g., ftp, http, bittorrent). And it's only
more efficient if multiple people are
downloading at the same time.</p><p class="">Miles<br class="">
</p>
<div class="moz-cite-prefix">On 2/25/19 12:28
PM, Richard Bennett wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:D7B46270-AD5E-4BD4-9ACD-41760F700AFE@bennett.com" class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
No, Bittorrent uses DHTs and accesses as many
copies of a given file as users choose to
share. It has to be running to serve files,
however.
<div class=""><br class="">
</div>
<div class="">RB<br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On Feb 25, 2019, at 9:59
AM, Miles Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="" moz-do-not-send="true">mfidelman@meetinghouse.net</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">On 2/24/19 9:53 PM, John
Levine wrote:<br class="">
<br class="">
<blockquote type="cite" class="">
<blockquote type="cite" class="">That's
what I find intriguing about my
Benevolent BotNet notion.
Rather<br class="">
than depending on finding an
institution interested in,
competent at,<br class="">
and willing to save history, and
hoping that it has longevity,
you rely<br class="">
on a network of volunteers to
provide that survivable
infrastructure by<br class="">
volunteering their excess
computing resources.<br class="">
</blockquote>
Hi again. Please look at
Bittorrent and tell us how it is
different<br class="">
from what you're proposing.<br class="">
<br class="">
Bittorrent has the advantage of
already existing and being
deployed<br class="">
all over the world. It's
notorious for pirated music but
it's also<br class="">
widely used for sharing linux
distributions and the like.<br class="">
<br class="">
</blockquote>
Bit torrent is transient. It's more
like an ad-hoc multi-cast <br class="">
streaming. When nobody is
downloading, there may be only one
copy of <br class="">
the file.<br class="">
<br class="">
Now gnutella, and some of the other
P2P file sharing systems - that <br class="">
replicate copies, or distribute
files across a distributed hash
table - <br class="">
that's another story entirely.<br class="">
<br class="">
-- <br class="">
In theory, there is no difference
between theory and practice.<br class="">
In practice, there is. .... Yogi
Berra<br class="">
<br class="">
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<div style="word-wrap: break-word;
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Bennett<br class="">
<a href="http://hightechforum.org/" class="" moz-do-not-send="true">High
Tech Forum</a> Founder</div>
<div style="word-wrap: break-word;
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& Wi-Fi standards co-creator</div>
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</blockquote>
<pre class="moz-signature" cols="72">--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra</pre>
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</blockquote>
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<div style="word-wrap: break-word;
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after-white-space;" class="">Richard Bennett<br class="">
<a href="http://hightechforum.org/" class="" moz-do-not-send="true">High Tech Forum</a> Founder</div>
<div style="word-wrap: break-word;
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In practice, there is. .... Yogi Berra</pre>
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-webkit-line-break: after-white-space;" class="">—<br class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">Richard
Bennett<br class="">
<a href="http://hightechforum.org/" class="" moz-do-not-send="true">High Tech Forum</a> Founder</div>
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
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& Wi-Fi standards co-creator</div>
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</div>
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Policy Consultant</div>
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<br class="">
</blockquote>
<pre class="moz-signature" cols="72">--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra</pre>
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