What is one difference between BPDU protection and root guard?

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• ABPDU protection works with PVST+, RSTP, and MSTP. Root guard works with RSTP or MSTP, but not RPVST+.
• BBPDU protection blocks a port if it receives any BPDU, and root guard blocks a port only if the BPDU indicates a better root path.
• CBPDU protection is typically implemented on edge ports, but root guard is typically implemented on uplinks with the root port role.
• DBPDU protection drops BPDUs received on a port, but does not block the port. Root guard blocks the port if it receives a BPDU.

• A
  3% (1)
• B
  75% (24)
• C
  13% (4)
• D
  9% (3)

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