Q: We use DHCP in our network, thus IP addresses can change. When address changes, corresponding device “goes red” (monitor is down), even though it works normally. How to avoid that?
A: You can use host’s Poll Using property to specify whether an IP address or a DNS name should be used for connecting to the host.

Switch the Poll Using property to the “DNS Name” value. After that, edit the DNS Name property (put the correct host network name instead of the ip address). This way the IPNetwork will always use the DNS name to connect to host and change of the real IP address wouldn’t affect it.