Question 270
An edge router imports thousands of overlapping customer prefixes. Observed: The routing table grows beyond contracted limits after a misconfiguration. Which acceptance observation best confirms that the proposed change worked?
Explanation
Correct Answer
This acceptance criterion tests the actual fault. The source evidence was The routing table grows beyond contracted limits after a misconfiguration. The correction addresses bgp prefix-limit protection was not configured for this customer session; success requires excess announcements trigger the intended safety action before resource exhaustion.
Incorrect Answers
This result is useful in another case with evidence Logs record authentication failures immediately after a key rotation. It does not test recovery from the routing table grows beyond contracted limits after a misconfiguration. Check instead whether excess announcements trigger the intended safety action before resource exhaustion.
It confirms an unrelated service correction: Import policy lacks authorized prefix and route-origin controls. The present case reports The routing table grows beyond contracted limits after a misconfiguration. Its completion test is Excess announcements trigger the intended safety action before resource exhaustion.
That observation would verify a separate fault involving import policy assigns the backup a higher preference or local preference. Its symptom is Backup path is preferred when an origin prefix first appears. For this case the actual issue is bgp prefix-limit protection was not configured for this customer session, and the relevant success signal is Excess announcements trigger the intended safety action before resource exhaustion.