Question 80
IKE phase one completes to a partner, but the partner log rejects child security associations because traffic selectors do not agree. Both public endpoints and credentials are correct. What should the engineer compare with the partner before changing the external link?
Explanation
Correct Answer
Compare phase-two local/remote protected traffic selectors and matching encryption-domain policy; phase-one success does not establish compatible child selectors.
Incorrect Answers
Changing phase-one IKE algorithms cannot correct a child-SA traffic selector mismatch after the IKE session has established.
Testing phase-one authentication again does not address an already negotiated IKE SA.
Switching the gateway egress interface does not correct mismatched phase-two subnet definitions.