I had this same issue... there is supposedly an IOS release at the end of the month that will fix this issue. I am having the same issue. I took the snmp linkdown part out for now and it works fine as long as no one person plugs into a different port with the same PC of course. Our problem is isolated to one Dorm with only two ports in each room. I have instructed the Help Desk to let the students know if it does not work to plug into the other port that they first got Auth'd in until the released IOS update can be applied. So far I have not had any issues.
From: Cisco Clean Access Users and Administrators [mailto:[email protected]] On Behalf Of David Maas Sent: Monday, September 21, 2009 11:34 AM To: [email protected] Subject: Re: Switch Update and Link-Down Messages What version of IOS is running on the 3750's now and before? ________________________________ From: Cisco Clean Access Users and Administrators [mailto:[email protected]] On Behalf Of King, Ronald A. Sent: Monday, September 21, 2009 11:25 AM To: [email protected] Subject: Switch Update and Link-Down Messages This weekend, our network team did an update to the 3750 switches NAC (4.6.1) is controlling. Now users are authenticating, moved to the temporary role and assessed, pass the assessment, moved to out of band. All appears to be working normally. About a second later, we get a "Received Link-Down trap from switch" for the same port, starting the whole process over, effectively putting the user into a loop. Anyone seen this? Have ideas on how to solve it? Ronald King Security Engineer Norfolk State University Marie V. McDemmond Center for Applied Research Suite 401 700 Park Ave. Norfolk, Virginia 23504 Phone: 757-823-3918 Fax: 757-823-2128 Email: [email protected]<mailto:[email protected]> http://security.nsu.edu
