Question 630
A switch receives BPDUs on an access edge configured with BPDU protection and disables the port. Which ongoing operational safeguard best reduces the chance of recurrence?
Explanation
Correct Answer
This is a continuing control for the failure mode in which the edge protection is responding to an unexpected bridge on a user-facing port. It complements the immediate fix instead of relying on a one-off correction.
Incorrect Answers
That control is useful for a different failure, such as when a distribution ring loses a link and traffic remains blocked despite alternate Layer 2 connectivity. It would leave the present failure mode insufficiently addressed.
That control is useful for a different failure, such as when an edge switch's LACP bundle connects to two independent devices that are not configured as a VSX or equivalent multichassis domain. It would leave the present failure mode insufficiently addressed.
That control is useful for a different failure, such as when a VSX pair loses its inter-switch link and the team assumes the remaining keepalive alone carries user traffic between peers. It would leave the present failure mode insufficiently addressed.