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In your diagram I believe this will be a problem: Switch:(Auto/Full) --
(auto/auto)phone. That is classic definition of mismatch. errors are
at the electrical level and historically not very well reported. the
c6k's used to use the most informative phy's and provided the most
counters to characterize low level errors. very historical as I have
not worked on it in several years.<br>
<br>
depends on your definition of switch. you assume the 'switch' in the
phone has essentially infinite buffer which is not the case. It a
switch in that it splits collision domains. Check the phone webpages
for cos0, cos1, ...cos7 drops. switch has extremely limited buffer.<br>
<br>
most likely your PC<->phone rate exceeds your
Phone<->Switch rate and phone switch cannot buffer<br>
<br>
/wes<br>
<br>
On Tuesday, February 24, 2009 2:48:55 PM, STEVEN CASPER
<a class="moz-txt-link-rfc2396E" href="mailto:SCASPER@mtb.com"><SCASPER@mtb.com></a> wrote:<br>
<blockquote cite="mid:49A408D5.9874.0039.0@mtb.com" type="cite">
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<div> First of all thanks to everyone for your responses, this is a
great group and I have found it to be a very valuable resource.</div>
<div> </div>
<div> Now....isn't the switch in an IP telephone a true switch and
not a hub? So if the phone port that goes to the closet switch is set
to auto and the closet switch port is set to auto it should negotiate
and transmit data independently of the PC port which is hard coded to
100/Full to match the 1000's of NIC cards that we have out there that
are already set that way?</div>
<div> </div>
<div> </div>
<div> </div>
<div>
<div><font color="#006600" face="Arial" size="2">Please consider the
impact on our environment before printing this e-mail.</font> </div>
<br>
<br>
>>> "Jason Aarons (US)" <a class="moz-txt-link-rfc2396E" href="mailto:jason.aarons@us.didata.com"><jason.aarons@us.didata.com></a>
2/24/2009 2:39 PM >>><br>
</div>
<div class="Section1">
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';">Cisco’s
recommendation with technical explanations<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';"><a
moz-do-not-send="true"
href="http://www.cisco.com/en/US/tech/tk389/tk214/technologies_tech_note09186a0080094781.shtml">http://www.cisco.com/en/US/tech/tk389/tk214/technologies_tech_note09186a0080094781.shtml</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';"><o:p> </o:p></span></p>
<div>
<div
style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;">
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><b><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">From:</span></b><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">
<a class="moz-txt-link-abbreviated" href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>
[<a class="moz-txt-link-freetext" href="mailto:cisco-voip-bounces@puck.nether.net">mailto:cisco-voip-bounces@puck.nether.net</a>] <b>On Behalf Of </b>Fuermann,
Jason<br>
<b>Sent:</b> Tuesday, February 24, 2009 1:52 PM<br>
<b>To:</b> 'STEVEN CASPER'; James Buchanan; <a class="moz-txt-link-abbreviated" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>
<b>Subject:</b> Re: [cisco-voip] PC Port on Phone Fails During Large
Data Transfer<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';">WHOA,
that’s some weird setup.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';">Everything
should work fine on auto/auto. If not both sides of the link need to at
least match, or you will get duplex mismatches which will cause a lot
of problems<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';"><o:p> </o:p></span></p>
<div>
<div
style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;">
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><b><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">From:</span></b><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">
<a class="moz-txt-link-abbreviated" href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>
[<a class="moz-txt-link-freetext" href="mailto:cisco-voip-bounces@puck.nether.net">mailto:cisco-voip-bounces@puck.nether.net</a>] <b>On Behalf Of </b>STEVEN
CASPER<br>
<b>Sent:</b> Tuesday, February 24, 2009 12:12 PM<br>
<b>To:</b> James Buchanan; <a class="moz-txt-link-abbreviated" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>
<b>Subject:</b> Re: [cisco-voip] PC Port on Phone Fails During Large
Data Transfer<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;">This is our
standard at the moment<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;">Switch
---------Phone Switch Port---------Phone PC Port------- PC NIC<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;">Auto/Full
Auto/Auto 100/Full
100/Full <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;">There is a long
convoluted history behind these settings but we have not had any issues
until recently.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"> <o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; color: rgb(0, 102, 0); font-family: 'Arial','sans-serif';">Please
consider the impact on our environment before printing this e-mail.</span>
<o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><br>
<br>
>>> "James Buchanan" <a class="moz-txt-link-rfc2396E" href="mailto:jbuchanan@ctiusa.com"><jbuchanan@ctiusa.com></a> 2/24/2009
12:07 PM >>><o:p></o:p></p>
</div>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';">When
you hardcoded to 100/Full, did you hardcode on the switch end and
inside the phone?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; color: rgb(31, 73, 125); font-family: 'Calibri','sans-serif';"><o:p> </o:p></span></p>
<div>
<div
style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;">
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><b><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">From:</span></b><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">
<a class="moz-txt-link-abbreviated" href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>
[<a class="moz-txt-link-freetext" href="mailto:cisco-voip-bounces@puck.nether.net">mailto:cisco-voip-bounces@puck.nether.net</a>] <b>On Behalf Of </b>STEVEN
CASPER<br>
<b>Sent:</b> Tuesday, February 24, 2009 9:49 AM<br>
<b>To:</b> '<a class="moz-txt-link-abbreviated" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>'<br>
<b>Subject:</b> [cisco-voip] PC Port on Phone Fails During Large Data
Transfer<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> Has
anyone run across the following scenario - <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> When
large amounts of data are transferred between an IP Phone and an
attached PC such as during a Microsoft Office update the update fails.
When the failure occurs the phone shows the status of port 2 (PC
Port) as no link. it was working fine prior to the update starting.
This fails consistently when the phone PC port and the PC NIC is set
for 100/full, always seems to work when both are set to Auto/Auto or
when the phone is bypassed and the PC is plugged directly into the
switch port.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">Tried
multiple phones 7941/61/11s. Current phone under test is running phone
load is 41.8-3-3SR2S and we are connected to a 3750 running 12.2.25
SEE2. Going to do more testing but wondering if any one else may have
run across this.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">Thanks<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';">Steve<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span
style="font-size: 10pt; color: rgb(0, 102, 0); font-family: 'Arial','sans-serif';">Please
consider the impact on our environment before printing this e-mail.</span><span
style="font-size: 10pt; font-family: 'Tahoma','sans-serif';"> <o:p></o:p></span></p>
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