After years of networking experience, I'm doing a real brain fart on a basic question...
Scenario: I want to join two LANs together that are on opposite sides of the building. Each LAN has its own smart switch. I've run two Cat 5e cables across the building's ceiling, terminating in each LANs patch bay. I ran two cables for backup and redundancy, not 'cause I have too much traffic.
Question: If I patch both cables into the respective smart switches, am I adding backup and redundancy, in case one port or cable fails? Or am I creating a routing problem? (I know that if this was a hub, then I wouldn't want to do this. But I'm blanking on the behaviour of smart switches.)
Additonal info: The LANS are on the same subnet and share WAN and server resources. The switches are 10/100.