We have a KVM-over-IP device on our network - Lantronix Spider Duo.
It was working fine for a year or so, then recently we changed some things on our network - new server, an extra gigabit switch, etc. (too many things to isolate which would be the cause) and we can no longer get it to work.
If I connect the KVM directly to a dedicated network card on our server and assign it a static IP, it works fine. As soon as I connect it to our main LAN - either on a switch or even directly to a router port, it no longer works.
I have reset all the switches (which are D-Link unmanaged units) and also reset the router to factory defaults, but it just won't work. It is the same router as we had before. DHCP is turned off and our SBS 2003 server is doing the DHCP.
If I tell the device to get a dynamic IP address, it comes back that it cannot obtain one.
If I set a static IP (tried at least a dozen different ones), it *looks* ok, but I cannot access it or ping it (destination unavailable).
How is this possible? Could our SBS server block a MAC address?
Thanks in advance for any ideas!