Answer
Encapsulation reduces payload size; wrong MTU causes fragmentation or packet drops.
Quick Answer
VXLAN encapsulation adds overhead bytes to each packet. If the CNI plugin doesn't set the MTU correctly (accounting for the VXLAN header), packets get fragmented — split into multiple smaller packets. Fragmentation significantly reduces network throughput and increases latency. Each CNI plugin must be configured with the correct MTU for the underlying network.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ