I always preface that I know it's wrong to still be running Win 2000 Server, but it's not my name on the building.
Welcome to budget based manufacturing.
Here's my problem. I haven't ever seen this in 16 years.
Usually, when a device gets plugged into the network with a valid MAC address, it shows up in the DHCP server. From there, I can acquire the information needed to give it a permanent reservation. We have a new PLC that does not play that way, not Windows based, and can only be configured on the client end with a fixed IP address. I gave the controller an IP, subnet, and gateway matching our network, and tried setting a reservation to match in the DHCP manager, but nothing seems to allow the reservation to be active.
The main problem is connectivity out of the building. The device has a pass through the firewall, but we are set up such that the domain controller is the also the DNS server that passes DNS requests to the gateway where DNS resolution happens for real. Never a problem until this device that does not have an option to obtain an IP address from a host. Near as I can tell, this device is not getting past the DHCP manager, with or without a reservation.
Their tech support says, "To access remotely you will need to set the panel to a public IP address and allow the RMC device to pass through the firewall or allow the RMC device to access your public IP then remote into your local area network. Hope this information helps."
I'm not too sure what that means. I have even tried putting a public IP DNS (18.104.22.168) in the controller's fixed address rather than the domain controller, but we still don't seem to be able to get past the domain controller to forward DNS requests to the gateway.
What am I missing here? Every other device, domain member or not, can be managed through DHCP, but not this one. It's almost like it isn't broadcasting. I really don't know for sure. There are no tools on the controller to troubleshoot network connectivity. All I can do is ping it from machines inside the network.
Two captures for you, one shows the firewall pass through, the other the inactive DHCP lease. The one capture shows "none" on lease type, but the reservation was made DHCP only. I'm at a loss on this one. If the device can't/won't be forwarded by the internal DNS server to the gateway, it's not going to be able to leave the building, right?