Switching (VLAN/STP)
no switchport
Make this switch port a routed (Layer 3) port: no VLAN, no bridging, no spanning tree. It can then take an ip address, and with 'ip routing' the switch routes through it.
Works on: SwitchMode: iface
Watch out
A switch port refuses 'ip address' until it is routed. 'switchport' turns it back into a switch port and removes the address.
Run this command live
Don't just read it — type no switchport in a real network simulator in your browser and watch it take effect. No install, no account needed to start.
Frequently asked
What does the "no switchport" command do?
Make this switch port a routed (Layer 3) port: no VLAN, no bridging, no spanning tree. It can then take an ip address, and with 'ip routing' the switch routes through it.
What's the common gotcha with "no switchport"?
A switch port refuses 'ip address' until it is routed. 'switchport' turns it back into a switch port and removes the address.