We have CM LMS 2.5 and use it to manage about 15K end-user connections. We have some anomolies with User Tracking (UT)that I can't seem to resolve.
1) UT does not seem to collect information on all the active ports. The device is active and IP/MAc are in CAM Table and router ARP cache, but information is not discovered or reported on some devices. What are possible reasons?
2) I think I know the answer to this, but need some support. When we physically remove a device of one type (say a 3550) and replace it with another device (say a 4506) that has the same IP address we seem to get junk in the UT information. For example, using the above scenario I report 175 devices connected to a switch, but only the MAC address (and port) show for 172 of them. The other 3 show all information. What is cause? Should I have deleted old device first? We are not using host names so IP address and device name are same.
3) Lastly, I would like to ask about the "Last Seen" column in the UT report. What exactly does this refer to? The physical port? The MAC address? The IP address? A combintation of the above?
Thank you in advance for your thoughts.
