My server group is saying they are getting an ip conflict error on the windows 2003 server. i see no problem and my managment sofwtare only sees one mac to that ip address. Is there a debug command to see if there is an ip conflict. Two mac's to one ip address. This server farm are staticly addressed so if there is a conflict the staff configured it. I would expect an error on my 6509 msfc as well. In addition does anyone know of any kind of acl that would only allow a specified mac address to a specified pc. Thanks in advance.