<html><head><base href="x-msg://998/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><pre>debug dhcp detail
debug ip dhcp server event
debug ip dhcp packet
</pre><div><br></div><div>I don't believe the ios dhcp server will attempt to serve requests on an interface it doesn't have a dhcp pool defined for. Do you happen to have another router with a data vlan address and ip-helper pointed to the CME router?</div><div><br></div><div>
<div>-Ryan</div>
</div>
<br><div><div>On Mar 11, 2010, at 12:21 PM, Kim, Hyoun S wrote:</div><br class="Apple-interchange-newline"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div lang="EN-US" link="blue" vlink="purple"><div class="Section1"><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">After implementing the last Cisco VoIP solution for our offices, I’ve stumbled across a problem with machines (all Windows) that occasionally drop their network connection just briefly every couple of hours. While this normally wouldn’t be a problem, it is for us because we redirect several of the default Windows folders to a Windows server. When the connection drops, Windows loses these folders and you have to log off/log on to get them back.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Looking into the Event Properties of various windows machines, it intermittently gets a DHCPNACK message from another DHCP server. Unfortunately, that DHCP server is the DHCP pool I set up on the CME.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">One of the Ethernet ports on the CME is configured for the data VLAN. This is connected to our switch with only the data VLAN being shown when I perform a show spanning-tree on that interface.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">The other Ethernet port is strictly configured for the voice VLAN and displays only the voice VLAN in a show spanning-tree on that interface.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Each PC port has both the data VLAN & voice vlan defined in the configuration w/ the phone containing “switchport voice vlan 100”.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Do you guys have any suggestions on why the Windows machines are trying to pull an IP from the Cisco DHCP server I set up for the phones?<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Thanks in advance.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: right; "><span style="color: rgb(113, 112, 116); "><o:p> </o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: right; "><span style="color: rgb(113, 112, 116); "><span><image001.jpg></span><o:p></o:p></span></div><div class="MsoNormal" align="center" style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; "><span style="color: rgb(113, 112, 116); "><hr size="4" width="100%" noshade="" align="center" style="color: rgb(127, 162, 184); "></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><b><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); ">Hyoun Kim</span></b><b><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(127, 162, 184); "><span class="Apple-converted-space"> </span>•</span></b><b><span style="font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span></b><span style="font-size: 8pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); ">Network Administrator I – East Division</span><span style="font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: right; "><span style="font-size: 8pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); ">640 Broadmor Blvd</span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><b><span style="font-family: Verdana, sans-serif; color: rgb(127, 162, 184); ">•<span class="Apple-converted-space"> </span></span></b><span style="font-size: 8pt; 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font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><b><span style="font-family: Verdana, sans-serif; color: rgb(127, 162, 184); ">•<span class="Apple-converted-space"> </span></span></b><span style="font-size: 10pt; font-family: 'Wingdings 2'; color: rgb(113, 112, 116); ">'</span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><span style="font-size: 8pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); ">859.312.6941</span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(127, 162, 184); "><span class="Apple-converted-space"> </span></span><b><span style="font-family: Verdana, sans-serif; color: rgb(127, 162, 184); ">•</span></b><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><span style="font-size: 10pt; font-family: 'Wingdings 2'; color: rgb(113, 112, 116); ">7</span><span style="font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><span style="font-size: 8pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); ">615.217.6255</span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><b><span style="font-family: Verdana, sans-serif; color: rgb(127, 162, 184); ">•<span class="Apple-converted-space"> </span></span></b><span style="font-size: 10pt; font-family: Wingdings; color: rgb(113, 112, 116); ">*</span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><span class="Apple-converted-space"> </span></span><span style="font-size: 8pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><a href="mailto:Hyoun.Kim@chartercom.com" style="color: blue; text-decoration: underline; "><span style="color: blue; ">Hyoun.Kim@chartercom.com</span></a></span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(113, 112, 116); "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div><pre>E-MAIL CONFIDENTIALITY NOTICE:
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