Problem
If you have configured multiple IP addresses for the Windows clients, e.g. you configure one Ethernet NIC and the second is a WLAN NIC to provide failover, by default the UMC will display the first entry of the configured IP address in exam mode and in the computer room module.
So if the 2nd NIC is in use, the computer room will not switch automatically and the client will no longer be displayed, and the watch function will also be disabled.
Solution
To get all IP addresses pinging from the clients by connecting to the UMC, you need to set the following varibale to the value true and reload the computer room module to update the 2nd IP address.
ucr set ucsschool/umc/computerroom/ping-client-ip-addresses=true
Investigation
ucr info ucsschool/umc/computerroom/ping-client-ip-addresses
If clients have multiple IP addresses and only one address is active, this variable can be set so that all possible IPs are iteratively pinged and the first which returns a positive response is selected as active. Since firewalls may block such ping calls, this feature should be used with care (default: false) Categories: management-umc Default: (not set) Type: bool