An engineer needs to configure a switch interface connected to an end host to allow immediate network access upon link establishment, bypassing the typical delay caused by Spanning Tree Protocol (STP) processing. Which command should be applied to the interface to achieve this requirement?
The spanning-tree portfast command enables the PortFast feature on the interface. This causes the port to bypass the usual STP listening and learning stages, allowing connected devices to access the network immediately after the link becomes active. This reduces the connectivity delay for end devices. The switchport mode access command configures the port as an access port but does not affect STP behavior or port transition times. The spanning-tree bpduguard enable command enables BPDU Guard on the interface, protecting against potential loops by shutting down the port if BPDUs are received, but it does not expedite port activation. The spanning-tree guard root command prevents the port from becoming a root port but does not eliminate the STP delay upon link establishment.
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Cisco CCNA 200-301
Network Access
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