I decided to change the display name of switches using Common Services\Device and Credentials\Device Properties\Display Name.
Once I changed it to a name that made sense to me the icon change from green to red. I attempted to change the name back to the default ip address which did change the name but did not change the icon back to green.
Then I deleted it from the topology view, did a discovery, it was found but once again red. Also, did a discovery for the entire network and anything that I change the display name is red and unreachable.
Can /should I delete that data base and do a new discovery.
Also, I can use putty and get to the switches.