Question 1120
A campus advertises overlapping VLAN subnet ranges across two sites, generating unpredictable routing to both. Which TWO coordinated steps provide the immediate correction and a sensible ongoing safeguard? Select two.
Explanation
Correct Answers
This is the corrective intervention because duplicate destination prefixes prevent unambiguous routed reachability between sites. Confirm its effect using the specified operational recovery check.
This adds the continuing safeguard so the corrected failure does not recur after the original intervention.
Incorrect Answers
This action fits a different incident: a BGP peer is Established but upstream routes are not accepted due to a prefix filter that rejects the approved campus CIDR. It is not the targeted repair for this case.
That safeguard would suit a different situation, such as when a core's next-hop route remains installed during a routed link fault because physical interface status stays up across an intermediate carrier. It does not specifically prevent this problem.