500 Series Stackable Managed Switches 21
No IP route: 
If the switch and your computer are in different IP subnets, you need 
one or more routers to route the packets between the two subnets.
Unusually long access time: 
Most connections will be available in a few seconds. Due to the 
standard spanning tree loop detection logic, adding new connections 
might take 30 to 60 seconds for the affected interfaces and/or LAN to 
become operational.