虚拟机网络适配器

Whenever possible, select VMXNET3.（安装 tools）

• E1000-E1000E：Emulated version of an Intel Gigabit Ethernet NIC, with drivers available in most newer guest operating systems.
• VMXNET3: Available only with VMware Tools.
• Flexible: Can function as either a Vlance or VMXNET adapter.
• SR-IOV pass-through: Allows VM and physical adapter to exchange data without using the VMkernel as an intermediary.
• vSphere DirectPath I/O: Allows VM access to physical PCI network functions on platforms with an I/O memory management unit.
• PVRDMA: Paravirtualized device that provides improved virtual device performance. It provides an RDMA-like interface for vSphere guests.

后面的三种就是所谓的透传或者直通，本质上就是绕过 VMKernel。缺点是关联的网卡就不能给其它虚拟机使用了，另外，所有 VMware 的高级功能这台虚拟机都不能使用了（因为绕开了 VMKernel）。