Unconnected links must be shown for all or none of the devices in a map.
To show unconnected links for all devices:
Repeat these steps to disable Unconnected Links.
The Unconnected Links option makes the map display short lines for links that are not connected anywhere. If this is cleared, only connected links are displayed. This could be a network interface that is not connected to another device. It could also be any active monitor (such as HTTP, or SMTP), in which case, the short line will show green when up and red when down.