Which port type accepts the spanning-tree portfast command without additional configuration?

The spanning-tree portfast command is designed for access ports connected to end devices like workstations or servers. PortFast immediately transitions a port to the forwarding state, bypassing the listening and learning states, which reduces the time it takes for an end device to connect to the network. This is safe for access ports because they are not expected to create bridging loops. Trunk ports carry traffic for multiple VLANs and are typically connected to other switches, where PortFast could cause bridging loops. Layer 3 main interfaces and subinterfaces operate at the network layer and are not part of the Spanning Tree Protocol domain, which operates at Layer 2.