Which Spanning Tree Protocol feature disables a port if it receives BPDUs, typically used on ports connected to hosts to prevent accidental connection of switches and resulting network loops?
BPDU Guard is designed to protect access ports that should only be connected to host devices. When enabled, if a BPDU is received on such a port, BPDU Guard disables the port to prevent potential loops from an unauthorized switch connection. Loop Guard, on the other hand, helps prevent non-designated ports from transitioning to the forwarding state when BPDUs are not received, which isn't suitable for access ports connected to hosts. BPDU Filter suppresses the sending and receiving of BPDUs, which can inadvertently allow a switch to be connected without detection, increasing the risk of loops. Root Guard prevents a port from becoming a root port, but does not disable the port upon receiving BPDUs, making BPDU Guard the most appropriate feature in this scenario.
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Cisco CCNA 200-301
Network Access
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