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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Now I’m confused – can you diagram where you’ve
captured the traffic for both a wired PC and wireless PC?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>If the wireless infrastructure is munging your packet, you
should compare before the DHCP Offer enters the wireless infrastructure and
then at the client (using Wireshark, for example).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Frank<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <b>On Behalf Of </b>John
Miller<br>
<b>Sent:</b> Tuesday, September 09, 2008 1:31 PM<br>
<b>To:</b> dhcp-users@isc.org<br>
<b>Subject:</b> RE: Vista Issue - Wired vs. Wireless<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'>I
never compared the packets on opposite sides of the wireless. What I compared
was a wired packet vs. a wireless packet, both at the client interface. I
could not find any difference in the two which lead me to believe it is
something in the client. Possibly the wireless hardware doesn't see the
broadcast? Doesn't make much sense, but it is all I can come up with at this
point.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'>Thanks
- John</span><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'> </span><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> -----Original Message-----<br>
<b>From:</b> dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <b>On
Behalf Of </b>Frank Bulk<br>
<b>Sent:</b> Monday, September 08, 2008 3:37 PM<br>
<b>To:</b> dhcp-users@isc.org<br>
<b>Subject:</b> RE: Vista Issue - Wired vs. Wireless<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>No, I’m actually talking about the infrastructure
piece. But if you see it coming out of the AP toward the client, then I
can’t imagine it’s the infrastructure. I presume you compare
the packet going into the WLAN infrastructure and the one coming out?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>Here’s the posting I was thinking of:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'><a
href="http://listserv.educause.edu/cgi-bin/wa.exe?A2=ind0807&L=wireless-lan&T=0&F=&S=&P=6042">http://listserv.educause.edu/cgi-bin/wa.exe?A2=ind0807&L=wireless-lan&T=0&F=&S=&P=6042</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>Frank<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <b>On Behalf Of </b>John
Miller<br>
<b>Sent:</b> Monday, September 08, 2008 9:13 AM<br>
<b>To:</b> dhcp-users@isc.org<br>
<b>Subject:</b> RE: Vista Issue - Wired vs. Wireless<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'>Frank,
when you reference vendor's WLAN gear, are you talking about the client side
interface piece? We do see the offer in the air, so it is propagating through
our APs and the controller.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'>Does
anyone know if Microsoft is going to put out a fix for this that incorporates
the registry change referenced in 928233?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'>Thanks
- John</span><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:green'> </span><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> -----Original Message-----<br>
<b>From:</b> dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <b>On
Behalf Of </b>Frank Bulk<br>
<b>Sent:</b> Saturday, September 06, 2008 10:24 PM<br>
<b>To:</b> dhcp-users@isc.org<br>
<b>Subject:</b> RE: Vista Issue - Wired vs. Wireless<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>This is best answered on EDUCAUSE’s WIRELESS-LAN listserv,
but something in my mind is saying that a certain wireless infrastructure
vendor’s WLAN gear doesn’t like the contents of the DHCPOFFER,
perhaps something about broadcast part?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Frank<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <b>On Behalf Of </b>John
Miller<br>
<b>Sent:</b> Thursday, September 04, 2008 8:26 AM<br>
<b>To:</b> dhcp-users@isc.org<br>
<b>Subject:</b> Vista Issue - Wired vs. Wireless<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>I have a rather strange problem that I hope someone can help
me with. This is a general DCHP issue as I am not sure what software the server
is running.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>We have several Vista clients that are not able to get
an IP address when trying to connect wirelessly. They connect just fine when
wired. The DHCP server is the same machine. I have done packet captures for
both wired and wireless. I can see the DHCPREQUEST go to the server and I can
see the DHCPOFFER come from the server. The server logs confirm the request and
offer. In each case (wired and wireless) the DHCPOFFER looks identical. The
only difference is that when wired the computer responds to the DHCPOFFER and
does not respond when wireless. I have not seen any correlation with the brand
of adapter, but that could be because we have not looked for one.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The only way we have found to resolve this issue is to do
the Vista registry fix to turn off the broadcast flag in the DHCPREQUEST for
the wireless adapter (KB 928233). While this will work, it means that any
student who wants to connect to the wireless AND has Vista will need to bring
their computer to our office to have the fix implemented.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Has anyone ever seen this issue and found another way to
resolve it?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks - John<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>-----</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>John H.
Miller</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Asst. Dir. of
CNS for Telecom<br>
Muskingum College</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Computer
& Network Services<br>
163 Stormont Street<br>
New Concord, Ohio 43762<br>
Phone (740) 826-8052<br>
Fax (740) 826-8065</span><o:p></o:p></p>
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