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After wri erase you should only have vlan 1...but if VTP was configured you could still have the vlan.dat file which might provide some odd vlan's.<br><br>Check active vlans-<br><br>"sho vlan br"<br><br>Are the two ports of the PC's in the same vlan? If yes is the vlan admin'ed down...are both PC ports no shut? <br><br>sho int status<br><br>sho run int vlan1<br><br>config t<br>int vlan1 <br>no shut<br><br>If that is up...does the switch have mac/arp entries for the PC's?<br><br>sho ip arp<br>sho mac address-table<br><br><div><hr id="stopSpelling">Date: Tue, 16 Aug 2011 14:33:46 -0400<br>From: lelio@uoguelph.ca<br>To: lkoziol@rcsvc.com<br>CC: cisco-voip@puck.nether.net<br>Subject: Re: [cisco-voip] OT: ping issues on Cisco switches but not hub<br><br>
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</style><div style="font-family:Verdana;font-size:10pt;color:#000000">can't recall what it said, it was in a test environment. both servers were on a switch with a wr erase performed. the only thing i can think of is i didn't have a portfast configured now that i think of. so that might be the next thing i do during troubleshooting.<br><br><br><span><br><span></span>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>Cooking with unix is easy. You just sed it and forget it. <br> - LFJ (with apologies to Mr. Popeil)<br><span></span><br></span><br><hr id="ecxzwchr"><b>From: </b>"Lukasz Koziol" <lkoziol@rcsvc.com><br><b>To: </b>"Lelio Fulgenzi" <lelio@uoguelph.ca>, "cisco-voip (cisco-voip@puck.nether.net)" <cisco-voip@puck.nether.net><br><b>Sent: </b>Tuesday, August 16, 2011 2:31:39 PM<br><b>Subject: </b>RE: [cisco-voip] OT: ping issues on Cisco switches but not hub<br><br>
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<p class="ecxMsoNormal"><span style="font-size:11pt;font-family:'Calibri','sans-serif';color:rgb(31, 73, 125)">What’s the traceroute show from each PC?</span></p>
<p class="ecxMsoNormal"><span style="font-size:11pt;font-family:'Calibri','sans-serif';color:rgb(31, 73, 125)"> </span></p>
<p class="ecxMsoNormal"><span style="font-size:11pt;font-family:'Calibri','sans-serif';color:rgb(31, 73, 125)">And what does the traceroute show from the switch to each PC?</span></p>
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<p class="ecxMsoNormal"><span style="font-size:11pt;font-family:'Calibri','sans-serif';color:rgb(31, 73, 125)"> </span></p>
<p class="ecxMsoNormal"><b><span style="font-size:9pt;font-family:'Calibri','sans-serif';color:rgb(51, 51, 153)">Lukasz Koziol</span></b><span style="font-size:9pt;font-family:'Calibri','sans-serif';color:rgb(31, 73, 125)"></span></p>
<p class="ecxMsoNormal"><span style="font-size:9pt;font-family:'Calibri','sans-serif';color:rgb(31, 73, 125)"> Voice/Network Engineer</span></p>
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<p class="ecxMsoNormal"><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>Lelio Fulgenzi<br>
<b>Sent:</b> Tuesday, August 16, 2011 12:07 PM<br>
<b>To:</b> cisco-voip (cisco-voip@puck.nether.net)<br>
<b>Subject:</b> [cisco-voip] OT: ping issues on Cisco switches but not hub</span></p>
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<p class="ecxMsoNormal" style="margin-bottom:12pt"><span style="font-size:10pt;font-family:'Verdana','sans-serif';color:black">I have a couple of SuperMicro PCs running CentOS which can not ping each other when on a Cisco switch, but they can ping each other
on a hub. I have to grab a cheap consumer switch to test on as well but thought I'd shoot this out to the group to see if anyone has seen anything like this before.<br>
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---<br>
Lelio Fulgenzi, B.A.<br>
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>
Cooking with unix is easy. You just sed it and forget it. <br>
- LFJ (with apologies to Mr. Popeil)<br>
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