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<DIV dir=ltr><FONT face=Arial color=#000000 size=2>Well, I was not trying to answer the Q. I was just sharing my dislikeness of this switch as I had alot o problems with it :), sepically with vlans trunking. I had it running with IP Phones normally with no problem. changeing the port role on the switch sometimes it helps, but I dont think in ur case. but what I got from ur words seems that the users is not using a PC connected to th phone (otherwise they will connect 2 cables from the switch) if that is the case try to disable the PC port of the IP Phone.</FONT></DIV>
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<DIV class=ecsection1 style="MARGIN: auto 0in"><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma">Thanks and Best Regards<BR><B><BR>Ahmed A. Elnagar<BR></B>Network Engineer <FONT color=#000000>Specialist</FONT></SPAN></DIV>
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<DIV class=ecsection1 style="MARGIN: auto 0in"><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">Advanced Computer Technology (ACT)<BR>16 Fawzy Ramah St.Off Shehab St.Mohandessin, Giza, Egypt <BR>Postal Code:12411 Cairo Egypt<BR></SPAN><SPAN style="FONT-SIZE: 6pt; COLOR: #003366; FONT-FAMILY: Tahoma"><BR></SPAN><SPAN class=ecspelle><B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">Mob</SPAN></B></SPAN><B><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma">:</SPAN></B><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma"> +2010-2833868</SPAN><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma"><BR></SPAN><B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">Website</SPAN></B><B><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">: </SPAN></B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">www.act-eg.com<BR><B>E-mail</B></SPAN><B><SPAN style="FONT-SIZE: 10pt; COLOR: #004600; FONT-FAMILY: Tahoma">: </SPAN></B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES"><A href="mailto:aelnagar@act-eg.com">aelnagar@act-eg.com</A></SPAN></DIV></FONT></DIV></DIV>
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<FONT face=Tahoma size=2><B>From:</B> cisco-voip-bounces@puck.nether.net on behalf of Matt Slaga (US)<BR><B>Sent:</B> Tue 03-Jul-07 3:25 PM<BR><B>To:</B> Ahmed Elnagar; Jefflin Choi; cisco-voip@puck.nether.net<BR><B>Subject:</B> Re: [cisco-voip] cisco IP Phone causes stp loop.<BR></FONT><BR></DIV>
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<P class=MsoNormal><SPAN style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Wow, that reply should help you solve that problem lickety split!</SPAN></P>
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<P class=MsoNormal><SPAN style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Try turning off GARP on the phone, disable web access and turn off voice vlan access.</SPAN></P>
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<P class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <B>On Behalf Of </B>Ahmed Elnagar<BR><B>Sent:</B> Tuesday, July 03, 2007 3:25 AM<BR><B>To:</B> Jefflin Choi; cisco-voip@puck.nether.net<BR><B>Subject:</B> Re: [cisco-voip] cisco IP Phone causes stp loop.</SPAN></P></DIV></DIV>
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<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: 'Arial','sans-serif'">Just a note</SPAN></P>
<P class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: 'Arial','sans-serif'">I Hate 500 Express </SPAN></B><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: 'Arial','sans-serif'">it is a very bad switch and it has a lot of strange configuration setting plus no useful troubleshooting capabilities at all.</SPAN></P>
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<P class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <B>On Behalf Of </B>Jefflin Choi<BR><B>Sent:</B> Tuesday, July 03, 2007 9:56 AM<BR><B>To:</B> cisco-voip@puck.nether.net<BR><B>Subject:</B> [cisco-voip] cisco IP Phone causes stp loop.</SPAN></P></DIV>
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<P class=MsoNormal>Hi all,</P></DIV>
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<P class=MsoNormal>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.</P></DIV>
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<P class=MsoNormal>CE500--------7912 IP Phone</P></DIV>
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<P class=MsoNormal> | |</P></DIV>
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<P class=MsoNormal> |------------------------|</P></DIV>
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<P class=MsoNormal>We can't prevent end user making accidental mistakes like this which might cause network failure. </P></DIV></DIV>
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<P class=MsoNormal>I was wondering if Cisco IP phones are sending BPDU so that the CE500 will errdisable the port. Doesn't it?</P></DIV>
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<P class=MsoNormal>Any way to prevent the this from happening? </P></DIV>
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<P class=MsoNormal>Thanks,</P></DIV>
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<P class=MsoNormal>Jeff</P></DIV>
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