MTUs in NSX
The Maximum Transmission Unit (MTU) is the size of the largest frame/packet an interface can receive or send. Because traffic from one endpoint to another goes through several devices in a data center, there are also several interdependent MTU configurations that need to be managed. NSX overlay model introduces an almost requirement for changing the MTU of the physical networking infrastructure. The goal for this document is to clarify the relation between the different MTUs at stake and to give some simple recommendation for their respective values in the context of NSX.