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Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU

Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?

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A.
BackboneFast

B.
UplinkFast

C.
Root Guard

D.
BPDU Guard

E.
BPDU Filter

One Comment on “Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU

  1. We only enable PortFast feature on access ports (ports connected to end stations). But if someone does not know he can accidentally plug that port to another switch and a loop may occur when BPDUs are being transmitted and received on these ports.

    With BPDU Guard, when a PortFast receives a BPDU, it will be shut down to prevent a loop -> D is correct.




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