2V0-41.24 Question 83
Select 3An organization has deployed VMware NSX-T Data Center and configured multiple logical switches to segment their workloads. The administrator is concerned about how Broadcast, Unknown Unicast, and Multicast (BUM) traffic is managed within the NSX-T environment. Which of the following statements are true regarding BUM traffic handling in NSX-T logical switches?
- A
BUM traffic is replicated to all transport nodes within the same transport zone.
- B
BUM traffic is forwarded only to hosts that have VMs connected to the logical switch.
- C
Multicast traffic can be optimized by enabling IGMP snooping on the logical switch.
- D
Unknown unicast traffic is flooded to all VMs connected to the logical switch.
- E
BUM traffic replication is determined by the replication mode configured on the logical switch.
Show answer and explanation
Correct answers: B, C, E
Explanation
In VMware NSX-T, BUM traffic is managed efficiently to avoid unnecessary flooding across the network. BUM traffic is only sent to hosts with connected VMs, and its replication is based on the configured replication mode (headend or service node). Additionally, multicast traffic can be optimized with IGMP snooping to ensure it is only delivered to interested receivers. This ensures minimal overhead while maintaining network functionality.
- A. Incorrect.
Incorrect. BUM traffic is not replicated to all transport nodes in the transport zone; it is selectively forwarded based on the logical switch configuration and replication mode.
- B. Correct.
Correct. NSX-T forwards BUM traffic only to the hosts that have VMs attached to the logical switch, ensuring efficient traffic management.
- C. Correct.
Correct. IGMP snooping can be enabled on logical switches to optimize multicast traffic delivery by limiting it to interested receivers.
- D. Incorrect.
Incorrect. Unknown unicast traffic is not indiscriminately flooded to all VMs; it is handled according to the logical switch's configured replication mode.
- E. Correct.
Correct. The handling of BUM traffic in NSX-T depends on the replication mode (e.g., headend or service node) configured for the logical switch.