<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000'>Hi Dylan,<div><br></div><div>It *shouldn't*, but in rare cases, it can. There have been versions of IOS with known crashes of the running supervisor crashing when a 2nd sup has been installed - I've seen it happen once. I'd schedule the install out of hours.</div><div><br></div><div>The usual caveat applies with cards being installed incorrectly, too quickly / slowly.</div><div><br></div><div>Cheers,</div><div>Peter.<br><br><hr id="zwchr"><blockquote style="border-left:2px solid rgb(16, 16, 255);margin-left:5px;padding-left:5px;"><b>From: </b>"Dylan Chidgey" <dylan.chidgey@cirruscomms.com.au><br><b>To: </b>"Peter Tonoli" <peter@medstv.unimelb.edu.au><br><b>Sent: </b>Tuesday, 21 January, 2014 12:31:48 PM<br><b>Subject: </b>RE: [AusNOG] Cisco 6500 redundant supervisor<br><br><style><!--
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--></style><div class="WordSection1"><p class="MsoNormal"><span style="color:#1F497D">Hi Peter,</span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">Currently it has a single Sup720 and I have spare lying around that I would like to install just wanting to know whether the introduction of a 2<sup>nd</sup> would cause a reload or any disruption to traffic etc.</span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Peter Tonoli [mailto:peter@medstv.unimelb.edu.au] <br><b>Sent:</b> Tuesday, 21 January 2014 12:29 PM<br><b>To:</b> Dylan Chidgey<br><b>Subject:</b> Re: [AusNOG] Cisco 6500 redundant supervisor</span></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal"><span style="color:black">Hi Dylan,</span></p><div><p class="MsoNormal"><span style="color:black"> </span></p></div><div><p class="MsoNormal"><span style="color:black">Not sure what you mean 'normal switch operation'? It's more the opposite. Have a supervisor fail, and the warm spare, should it be configured that way, will kick in. With little if any traffic dropped.</span></p></div><div><p class="MsoNormal"><span style="color:black"> </span></p></div><div><p class="MsoNormal"><span style="color:black">Cheers,</span></p></div><div><p class="MsoNormal"><span style="color:black">Peter.</span></p></div><div><p class="MsoNormal"><span style="color:black"> </span></p></div><div><p class="MsoNormal"><span style="color:black"> </span></p><div class="MsoNormal" align="center" style="text-align:center"><span style="color:black"><hr size="2" width="100%" align="center" id="zwchr"></span></div><blockquote style="border:none;border-left:solid #1010FF 1.5pt;padding:0cm 0cm 0cm 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt"><p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From: </span></b><span style="color:black">"Dylan Chidgey" <<a href="mailto:dylan.chidgey@cirruscomms.com.au" target="_blank">dylan.chidgey@cirruscomms.com.au</a>><br><b>To: </b><a href="mailto:ausnog@lists.ausnog.net" target="_blank">ausnog@lists.ausnog.net</a><br><b>Sent: </b>Tuesday, 21 January, 2014 12:22:09 PM<br><b>Subject: </b>[AusNOG] Cisco 6500 redundant supervisor</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"></span></p><p class="MsoNormal"><span style="color:black">Hi All,</span></p><p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:black">Just wondering if anyone with experience with running Cisco 6500s with redundant supervisors could tell me if introducing a 2<sup>nd</sup> supervisor will disrupt normal switch operation?</span></p><p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:black">Thanks</span></p><p class="MsoNormal"><span style="color:black"><br>Dylan.</span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><br>_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a></span></p></blockquote><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><br><br><br>-- </span></p><div><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">Peter Tonoli < <a href="mailto:peter@medstv.unimelb.edu.au" target="_blank">peter@medstv.unimelb.edu.au</a> > +61-3-9288-2399 <br>IT Manager <br>The University of Melbourne - Eastern Hill Academic Centre, St. Vincent's Institute and O'Brien Institute </span></p></div></div></div><div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><hr size="1" width="100%" noshade="" style="color:#ACA899" align="center"></span></div><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com" target="_blank">www.avg.com</a><br>Version: 2014.0.4259 / Virus Database: 3681/7016 - Release Date: 01/19/14</span></p></div></blockquote><br><br><br>-- <br><div><span name="x"></span>Peter Tonoli < peter@medstv.unimelb.edu.au > +61-3-9288-2399 <br>IT Manager <br>The University of Melbourne - Eastern Hill Academic Centre, St. Vincent's Institute and O'Brien Institute <span name="x"></span><br></div></div></div></body></html>