<div>LOL. Yeah, same goes for me. </div>
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<div>Anyway, it is either the switch doesn't go to errdisable or the Phone doesn't send BPDU which prevent switches from blocking.</div>
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<div>If ever that the IP phone doesn't send BPDU, then the problem can be encountered not only on CE500 but all the switches of cisco.</div>
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<div>Any ideas?<br><br> </div>
<div><span class="gmail_quote">On 7/3/07, <b class="gmail_sendername">Ahmed Elnagar</b> <<a href="mailto:aelnagar@act-eg.com">aelnagar@act-eg.com</a>> wrote:</span>
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<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Just a note</span></font></p>
<p><b><font face="Arial" color="navy" size="2"><span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I Hate 500 Express </span></font></b><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
it is a very bad switch and it has a lot of strange configuration setting plus no useful troubleshooting capabilities at all.</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </span></font></p>
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<div style="TEXT-ALIGN: center" align="center"><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">
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<p><b><font face="Tahoma" size="2"><span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</span></font></b><font face="Tahoma" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">
cisco-voip-bounces@puck.nether.net</a> [mailto:<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a>] <b><span style="FONT-WEIGHT: bold">
On Behalf Of </span></b>Jefflin Choi<br><b><span style="FONT-WEIGHT: bold">Sent:</span></b> Tuesday, July 03, 2007 9:56 AM<br><b><span style="FONT-WEIGHT: bold">To:</span></b> <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:cisco-voip@puck.nether.net" target="_blank">
cisco-voip@puck.nether.net</a><br><b><span style="FONT-WEIGHT: bold">Subject:</span></b> [cisco-voip] cisco IP Phone causes stp loop.</span></font></p></div>
<div><span class="e" id="q_1138af7bd57ef10a_1">
<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">Hi all,</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">Some end user plugged the pc port and switch port of an IP Phone to a Catalyst CE500 port at the same time causing our client's switch on a loop.
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">CE500--------7912 IP Phone</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> | |</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> |------------------------|</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">We can't prevent end user making accidental mistakes like this which might cause network failure. </span></font></p></div></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">I was wondering if Cisco IP phones are sending BPDU so that the CE500 will errdisable the port. Doesn't it?</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">Any way to prevent the this from happening? </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">Thanks,</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt">Jeff</span></font></p></div>
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<p><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p></div></span></div></div></div></blockquote></div><br>