[97940] in North American Network Operators' Group

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iPhone and Network Disruptions ...

daemon@ATHENA.MIT.EDU (Prof. Robert Mathews (OSIA))
Sat Jul 21 20:55:44 2007

Date: Sat, 21 Jul 2007 20:53:46 -0400
From: "Prof. Robert Mathews (OSIA)" <mathews@hawaii.edu>
To: North American Network Operators Group <Nanog@merit.edu>
Errors-To: owner-nanog@merit.edu


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Fellow Nanogers:

Reports have floated across my desk in the past week, which have 
suggested that iPhones owned by faculty, staff and students have been 
flooding university campus Wi-Fi networks in parts of the country.  For 
example, see: *"Duke Wi-Fi Crippled by Apple iPhones" *at 
http://www.sci-tech-today.com/story.xhtml?story_id=10200AG9NMHU   Since 
that story first aired, and by applying a patch that was subsequently 
provided by Cisco, Duke has now come to see the elimination of the 
problem,  see: "*Duke Resolves iPhone, Wi-Fi Outage Problems"* at 
http://www.eweek.com/article2/0,1895,2161065,00.asp

There are certain aspects of this story in which I have the most 
interest, and the following questions (if I may be permitted to list 
them) detail my concern - adequately.  I wish to ask you:  1) is the 
iPhone an extra-ordinary device when comparing it with devices of a 
comparable nature, which also request ties to a Wi-Fi network, (there 
are many that use Wi-Fi enabled Smart-phones and PDAs on campuses -- so, 
why do 'they' not pose a similar problem)  2) is this problem a result 
of poor planning and services implementation at certain campuses, 3) is 
this story - a product of great exaggerations?  4) if there are 
technical issues indeed that permit iPhones in particular to DoS Wi-Fi 
nets, what can these storms be attributed to, and what can/should be 
done about it?   

If you are in a position to respond, I would like to hear from you, 
either publicly or privately.  If there is enough group interest in the 
matter, I would be most happy to summarize.

All the best,
Robert.
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Fellow Nanogers:<br>
<br>
Reports have floated across my desk in the past week, which have
suggested that iPhones owned by faculty, staff and students have been
flooding university campus Wi-Fi networks in parts of the
country.&nbsp; For example, see: <span id="headline" class="bigArticleTitle"><b>"Duke
Wi-Fi Crippled by Apple iPhones" </b>at
<a class="moz-txt-link-freetext"
 href="http://www.sci-tech-today.com/story.xhtml?story_id=10200AG9NMHU">http://www.sci-tech-today.com/story.xhtml?story_id=10200AG9NMHU</a>&nbsp;&nbsp;
Since
that story first aired, and by applying a patch that was
subsequently provided by Cisco, Duke has now come to see the
elimination of the problem,&nbsp; see: "</span><span class="Article_Title"><b>Duke
Resolves iPhone, Wi-Fi Outage Problems"</b> at <a
 href="http://www.eweek.com/article2/0,1895,2161065,00.asp">http://www.eweek.com/article2/0,1895,2161065,00.asp</a><br>
</span><span id="headline" class="bigArticleTitle"><br>
There are certain aspects of this story in which I have the most
interest, and the following questions (if I may be permitted to list
them) detail my concern - adequately.&nbsp; I wish to ask you:&nbsp; 1) is the
iPhone an </span><span id="headline" class="bigArticleTitle">extra-ordinary
</span><span id="headline" class="bigArticleTitle">device when
comparing it with
devices of a </span><span id="headline" class="bigArticleTitle">comparable
nature, which also</span><span id="headline" class="bigArticleTitle">
request ties to a Wi-Fi network, (there are many that use Wi-Fi enabled
Smart-phones and PDAs on campuses -- so, why do 'they' not pose a
similar problem)&nbsp; 2) is this
problem a result of poor planning and services implementation at
certain campuses, 3) is this story - a product of great exaggerations?&nbsp;
4) if there are </span></font><font face="Tahoma"><span id="headline"
 class="bigArticleTitle">technical issues </span></font><font
 face="Tahoma"><span id="headline" class="bigArticleTitle">indeed that
permit iPhones in particular to DoS Wi-Fi nets, what can these storms
be attributed to, and what can/should be done about it?&nbsp;&nbsp;&nbsp; <br>
</span><span id="headline" class="bigArticleTitle"><br>
If you are in a position to respond, I would like to hear from you,
either publicly or privately.&nbsp; </span><span id="headline"
 class="bigArticleTitle">If there is enough group interest in the
matter, I would be most happy to summarize.<br>
<br>
All the best,<br>
Robert.<br>
--<br>
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title:Distinguished Senior Research Scholar on National Security Affairs & U.S. Industrial Preparedness
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