I've got this error and feeling frustrated about it , So we have in Production areas machine that's needs to assign to vlan 213 and after i did the configuration for that port and got an error with spanning-tree portfast , so i took it off from that port, can some let me know i did a right thing when i took it off? or should i leave it in the configuration ?
BLDG-C-North-Product(config-if)#switchport mode access BLDG-C-North-Product(config-if)#spanning-tree portfast %Warning: portfast should only be enabled on ports connected to a single host. Connecting hubs, concentrators, switches, bridges, etc... to this interface when portfast is enabled, can cause temporary bridging loops. Use with CAUTION %Portfast has been configured on GigabitEthernet3/0/16 but will only have effect when the interface is in a non-trunking mode.