2V0-41.24 Question 443
Select 3A network administrator is troubleshooting connectivity issues between a virtual machine (VM) in Segment A and another VM in Segment B within an NSX-T Data Center environment. The administrator suspects a misconfiguration in firewall rules or routing policies. To isolate the issue, the administrator uses the Traceflow tool. Which of the following outcomes from Traceflow would provide the most insight into the root cause of the problem?
- A
Traceflow reports the packet was dropped at the Distributed Firewall with a 'deny' action.
- B
Traceflow shows the packet was successfully delivered to the destination VM.
- C
Traceflow indicates the packet was dropped due to an invalid logical router path.
- D
Traceflow identifies that the packet was encapsulated and forwarded to the correct Transport Node.
- E
Traceflow reports that the packet was dropped at the ESXi host uplink due to MTU mismatch.
Show answer and explanation
Correct answers: A, C, E
Explanation
Traceflow is a powerful troubleshooting tool in NSX-T Data Center that simulates the path of a packet through the network. It provides detailed insights into where a packet is dropped or how it is processed. In this scenario, outcomes indicating drops due to Distributed Firewall rules, invalid routing paths, or MTU mismatches are critical in identifying misconfigurations causing connectivity issues. Successfully delivered packets or proper encapsulation and forwarding do not help in diagnosing the problem.
- A. Correct.
A 'deny' action at the Distributed Firewall indicates a misconfigured firewall rule, which could explain the connectivity issue between the VMs.
- B. Incorrect.
If the packet was successfully delivered, no issue exists, and this does not help identify a root cause.
- C. Correct.
An invalid logical router path suggests a misconfiguration in the routing setup, which could prevent communication between the segments.
- D. Incorrect.
The packet being forwarded correctly to the Transport Node indicates proper configuration of transport and encapsulation, ruling these out as potential issues.
- E. Correct.
A packet drop at the ESXi host uplink due to an MTU mismatch points to a problem with physical network configuration, potentially causing connectivity failures.