You can administer networking in a VMware environment for many different configurations. The examples in this section describe some of the VMware networking possibilities.
This section is not a substitute for the VMware documentation. Review the VMware networking best practices before deploying any applications on an ESXi host.
The following are the suggested best practices for configuring a network that supports deployed applications on VMware Hosts:
Separate the network services to achieve greater security and performance by creating a vSphere standard or distributed switch with dedicated NICs for each service. If you cannot use separate switches, use port groups with different VLAN IDs.
Configure the vMotion connection on a separate network devoted to vMotion.
For protection, deploy firewalls in the virtual machines that route between virtual networks that have uplinks to physical networks and pure virtual networks without uplinks.
Specify virtual machine NIC hardware type vmxnet3 for best performance.
Connect all physical NICs that are connected to the same vSphere standard switch to the same physical network.
Connect all physical NICs that are connected to the same distributed switch to the same physical network.
Configure all VMkernel vNICs to be the same IP Maximum Transmission Unit (MTU).
Disclaimer: The images in this section represent older ESXi versions and may vary for the latest ESXi versions.