SMC Networks ElliteConnect 2.4GHz/5GHz - Manual (Page 128)

System Configuration
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Port Fast (Fast Forwarding) – You can enable this option if an
interface is attached to a LAN segment that is at the end of a
bridged LAN or to an end node. Since end nodes cannot cause
forwarding loops, they can pass directly through to the spanning
tree forwarding state. Specifying fast forwarding provides quicker
convergence for devices such as workstations or servers, retains
the current forwarding database to reduce the amount of frame
flooding required to rebuild address tables during reconfiguration
events, does not cause the spanning tree to initiate
reconfiguration when the interface changes state, and also
overcomes other STP-related timeout problems. However,
remember that fast forwarding should only be enabled for ports
connected to an end-node device. (Default: Disabled)
Status – Enables/disables STP on this interface. (Default:
Enabled)