We ran into a similar problem with the MAC clean access agent when connecting 
to the VPN.  We called  TAC and it was bug on the MAC Clean Access agent which 
has not been fixed.  It appears that the VLAN detection module on the MAC Clean 
Access Agent clears the ARP table which was causing the VPN client to 
disconnect and reconnect.

On Mar 12, 2010, at 9:59 PM, Don Click wrote:

we dont see that, but something related - after our mac users login, NAC 
launched, logged them in, then "cycled" - keeps disconnecting and reconnecting 
them to the vlan.. very strange.


From: Cisco Clean Access Users and Administrators 
[mailto:[email protected]] On Behalf Of Lane Clark
Sent: Friday, March 12, 2010 2:39 PM
To: [email protected]<mailto:[email protected]>
Subject: Cellular Wireless Cards

Hello All,

We have come across a problem with cellular cards and NAC.  Cards from AT&T and 
T-Mobile running especially on MAC OS 10.6 do not work.  The MAC is able to 
login into the VPN fine but then the NAC agent does not launch and run the 
posture assessment.  Have any of you had any experience with this?  We have 
opened a case with Cisco but the tech seems stumped.

Thanks.

Lane

Helvetiella Longoria
Lead Network Security & Systems Engineer
Division of Information Technology
Network Engineering & Telecommunications PC530
Florida International University
Miami, FL 33199
Tel. 305-348-3591 Fax. 305-348-4057



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