Which Cisco Catalyst Feature Automatically Disables the Port in an Operational PortFast upon receipt of any BPDU?

Which Cisco Catalyst Feature Automatically Disables the Port in an Operational PortFast upon receipt of any BPDU?

• BackboneFast
• BPDU Guard
• BPDU filter root Guard
• UDLD

Explanation

BPDU Guard is a feature that is available on Cisco Catalyst switches that automatically disables a port in an operational PortFast upon receipt of any BPDU (Bridge Protocol Data Unit). This helps to prevent unauthorized switches from being connected to the network, which could potentially disrupt network operations.

BackboneFast is a feature that is used to detect and recover from indirect link failures in a network. It does this by using special multicast hello messages to verify the availability of a root bridge, and by using additional multicast hello messages to verify the availability of alternate paths to the root bridge.

BPDU filter root Guard is a feature that is used to prevent unauthorized switches from becoming the root bridge in the network. It does this by filtering out BPDUs that are received on designated ports, and by disabling the port if a BPDU is received.

UDLD (Unidirectional Link Detection) is a protocol that is used to detect and recover from unidirectional links in a network. It does this by sending special messages between neighboring devices on a link and verifying that they are received, in order to determine the health of the link.

Therefore, the correct answer is: BPDU Guard