VMware NSX – Transformational (NSX-T) Practice Exam

The minimum MTU (Maximum Transmission Unit) size for the UPLINK profile when deploying VMware Kubernetes on an NSX-T Data Center is 1600 bytes.

Setting the MTU to 1600 bytes is essential for ensuring optimal performance in a Kubernetes environment, as it allows for encapsulation overhead when using overlay networking. In environments where workloads are deployed across different hosts, an increased MTU size helps to reduce fragmentation, resulting in better network efficiency and throughput. This MTU size is particularly relevant for VXLAN encapsulated traffic, which can require more bytes than the standard Ethernet frame size of 1500 bytes.

Utilizing a lower MTU, such as 1500 bytes or 1550 bytes, would not accommodate the extra bytes needed for encapsulation, potentially leading to packet fragmentation, increased latency, and reduced performance in the Kubernetes networking setup. Therefore, it’s crucial to configure the UPLINK profile with a minimum MTU of 1600 to align with the requirements of the networking infrastructure for VMware Kubernetes on NSX-T Data Center.

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