Data Center Virtualization Certification：VCP6.5-DCV Exam Guide

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Adding/configuring/removing dvPort groups

A distributed port group (dvPort) is a group of ports on a specific vDS that provides network connectivity to the VMs and/or the VMkernel interfaces.

The first dvPort can be configured during vDS creation, but you can create a new dvPort using the vSphere Web Client, in the Networking inventory, by selecting a specific vDS. Then select Distributed port group | Create a new port group.

On the Select name and location page, type the name of the new distributed port group, or accept the generated name.

Then, on the Configure settings page, set the general properties for the new dvPort as illustrated in the following screenshot:

Figure 2.4: Adding a dvPort to a vDS

The different settings are related to dvPort management and configuration:

Port binding: How the virtual ports are allocated to the different network resources: VM vNICs, VMkernel interfaces, and uplinks. There are different allocation methods:
- Static binding: A port is assigned statically when the resource is connected to the vDS.
- Dynamic binding: A port is assigned dynamically when the VM is powered on (and, of course, it's connected to the vDS). Dynamic binding has been disapproved since vSphere 5.0.
- Ephemeral - no binding: No port binding.
Number of ports: How many ports are pre-allocated (by default, 8) on the vDS. Note that each dvPort has an assigned number with a range in the defined number or ports (for example, 1-8). In case of range extension, the new numbers can have a new range, depending on the port allocated before (for example, can be 81-88 if there were 80 ports allocated before).
Port allocation: This defines how number of ports are allocated. There are two different methods:
- Elastic (default): All ports are pre-assigned and a new set of X ports (the number of ports) is created.
- Fixed: Additional ports are not created once all the ports are assigned. You need to change the number of ports.

VLAN and network resource pools will be discussed later.

To delete a dvPort, just right-click on the selected dvPort and choose the Delete menu:

Figure 2.5: Removing a dvPort from a vDS

Be sure to migrate your VMs to a proper port group before removing a dvPort!

For more information, see the vSphere 6.5 Networking guide (https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-69933F6E-2442-46CF-AA17-1196CB9A0A09.html).