Question 330
An edge BGP peer accepts IPv4 unicast but not a VPN address family. Observed: Route-monitor output shows no VPNv4 capabilities agreed. Which acceptance observation best confirms that the proposed change worked?
Explanation
Correct Answer
This acceptance criterion tests the actual fault. The source evidence was Route-monitor output shows no VPNv4 capabilities agreed. The correction addresses multiprotocol capabilities are not negotiated consistently; success requires vPNv4 prefixes and their route targets appear at authorized receivers.
Incorrect Answers
This result is useful in another case with evidence Thousands of leaked more-specific prefixes are accepted without validation. It does not test recovery from route-monitor output shows no vpnv4 capabilities agreed. Check instead whether vPNv4 prefixes and their route targets appear at authorized receivers.
It confirms an unrelated service correction: PE loopback reachability is missing from the transport IGP. The present case reports Route-monitor output shows no VPNv4 capabilities agreed. Its completion test is VPNv4 prefixes and their route targets appear at authorized receivers.
That observation would verify a separate fault involving route reflection only propagates paths according to client and nonclient advertisement rules. Its symptom is Some nonclient speakers still cannot learn routes from other nonclients. For this case the actual issue is multiprotocol capabilities are not negotiated consistently, and the relevant success signal is VPNv4 prefixes and their route targets appear at authorized receivers.