We only want to monitor and show status on critical interfaces (links to other switches and non-transient network devices) on our switches; so we list the resources on the switch and deselect all but the critical links which supposedly turns off monitoring of those interfaces. But if one of those non-monitored interfaces goes down, we sometimes get a red icon on the node icon. If you expand (from Managed Node View, for instance) the interfaces on the device, they all show green (because all monitored interfaces are up), but the red icon is still overlayed on the node icon.
Any ideas why this is happening and maybe how to stop that behavior?