2V0-41.24 Question 75
Single answerAn organization has deployed VMware NSX-T Data Center for their virtualized network infrastructure. During a troubleshooting session, the administrator observes that workloads on two different ESXi hosts in the same logical switch are unable to communicate. The administrator suspects an issue with the control plane. What is the primary function of the control plane in logical switching that could impact this scenario?
- A
Distribute MAC address tables to transport nodes for logical switch ports.
- B
Forward packets between logical switch segments based on ARP resolution.
- C
Enable communication between the NSX Manager and ESXi hosts.
- D
Control the data plane to ensure packets are dropped if a mismatch occurs.
Show answer and explanation
Correct answer: A
Explanation
The control plane in NSX-T logical switching is primarily responsible for distributing network information such as MAC address tables and ARP entries to transport nodes (ESXi hosts). This ensures that the data plane can efficiently forward packets between workloads. If the control plane fails or is misconfigured, the transport nodes may not receive the necessary forwarding information, leading to communication issues like the one described in the scenario.
- A. Correct.
The control plane in NSX-T logical switching is responsible for distributing MAC address tables and other forwarding information to transport nodes. If the control plane fails, this could prevent workloads on different hosts from communicating.
- B. Incorrect.
Forwarding packets is a function of the data plane, not the control plane. The control plane provides the necessary information for forwarding but does not handle the actual packet forwarding.
- C. Incorrect.
While the NSX Manager communicates with ESXi hosts, this function is not specific to the control plane in logical switching. The control plane focuses on distributing network information like MAC addresses and ARP entries.
- D. Incorrect.
The control plane does not enforce packet drops based on mismatches. This is a function of the data plane or security policies applied to the logical switch.