No Ip Route; Unusually Long Access Time - Cisco 500 Series Quick Start Manual

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.
500 Series Stackable Managed Switches 21