2V0-41.24 Question 446
Single answerAn administrator is troubleshooting a connectivity issue where workloads in a specific NSX-T segment cannot communicate with external networks. Upon investigation, the administrator observes that the Edge Transport Node is operational but the route table on the Tier-0 Gateway is missing expected routes. What is the most likely cause of this issue?
- A
The BGP peering between the Tier-0 Gateway and the upstream router is not established.
- B
The Tier-1 Gateway connected to the affected segment is misconfigured.
- C
The Edge Transport Node does not have the correct VLAN tagging configuration.
- D
A Distributed Firewall rule is blocking traffic from the segment to the external network.
Show answer and explanation
Correct answer: A
Explanation
The most likely cause of missing routes in the Tier-0 Gateway's route table is a failure in dynamic routing, such as a lack of BGP peering between the Tier-0 Gateway and the upstream router. Without a properly established BGP session, the Tier-0 Gateway will not receive or advertise routes, causing connectivity issues. The other options describe potential issues but do not directly explain the observed symptom of missing routes.
- A. Correct.
If BGP peering is not established between the Tier-0 Gateway and the upstream router, dynamic routes will not be advertised or learned, resulting in missing routes in the Tier-0 route table.
- B. Incorrect.
The Tier-1 Gateway misconfiguration would generally affect connectivity within the NSX-T environment rather than the presence of routes on the Tier-0 Gateway.
- C. Incorrect.
Incorrect VLAN tagging on the Edge Transport Node could prevent traffic from being forwarded correctly, but it would not directly cause missing routes in the Tier-0 route table.
- D. Incorrect.
A Distributed Firewall rule could block traffic at the network level, but it would not impact the routing table on the Tier-0 Gateway.