PortFast

PortFast allows an interface to transition quickly to the forwarding state.

Consider the following when configuring PortFast:
  • Do not enable PortFast on ports that connect to other devices.
  • PortFast only needs to be enabled on ports that connect to workstations or PCs. Repeat this configuration for every port connected to workstations or PCs.
  • Enabling PortFast on ports can cause temporary bridging loops, in both trunking and nontrunking mode.
  • If BPDUs are received on a PortFast- enabled interface, the interface loses the edge port status unless it receives a shutdown/no shutdown command.
  • PortFast immediately puts the interface into the forwarding state without having to wait for the standard forward time.