A vSphere Distributed Switch is a virtual switch that spans multiple ESXi hosts. Unlike a vSphere Standard Switch, which has to be locally configured on a per-ESXi basis, configuration of a vSphere Distributed Switch is done only once and the data plane is pushed to all of the ESXi hosts connected to it.
Note
A vSphere Distributed Switch cannot be created on an ESXi server. You need to be connected to the vCenter Server either by using the vSphere Client or by using the vSphere Web Client.
The following procedure explains how to create a new distributed vSwitch by using the vSphere Web Client:
From the inventory Home, click on Networking:
Select the datacenter, and navigate to Related Objects | Distributed Switches click on the new distributed switch icon:
Supply a name for the distributed switch, and click on Next:
Select a distributed switch version, and click on Next:
Select Number of uplinks planned, change the default port group name if necessary...