which of the following port binding options assigns a port to a virtual machine the first time the virtual mac

When creating a dvPort group, which of the following port binding options assigns a port to a virtual machine the first time the virtual machine powers on after it has been connected to the dvPort Group?

A.
Static Binding

B.
Ephemeral

C.
Flexible

D.
Dynamic Binding

Explanation:
vSphere4 Documentation Notes vReference.com Version 1.0 Page 1 forbesguthrie@vReference.com Main Documentation Set, page 15.
dvPort group properties include:
Port Binding – when ports are assigned to virtual machines connected to this dvPort group. Static binding – to assign a port to a virtual machine when the virtual machine is connected to the dvPort group.
Dynamic binding – to assign a port to a virtual machine the first time the virtual machine powers on after it is connected to the dvPort group.
Ephemeral – for no port binding.

5 Comments on “which of the following port binding options assigns a port to a virtual machine the first time the virtual mac

  1. Scott says:

    I have to concur with the Gringo and erter on this one with D is correct and dynamic binding has been deprecated in esxi 5 as shown in that document link from gringo.

    I think this reading of static binding should explain why. First my explanation of how i read the line on static binding and what it means…

    static binding assigns the port to the VM when the VM is ASSIGNED to the dvPort group. this is done via the vm’s settings with a pull down to assign it to a dvport group same location you find the network setting for a a virtual machine port group on a standard switch. (vm network virtual machine port group). Also note how they say the vm has to be manually removed from the dvPort group.. ie, same method as adding. the vm settings.

    http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1022312
    Static binding

    When you connect a virtual machine to a port group configured with static binding, a port is immediately assigned and reserved for it, guaranteeing connectivity at all times. The port is disconnected only when the virtual machine is removed from the port group. You can connect a virtual machine to a static-binding port group only through vCenter Server.

    Note: Static binding is the default setting, recommended for general use.

  2. Ken says:

    According to the vmware doc linked by gringo and scott, both Dynamic and Ephemeral are correct.

    “In a port group configured with dynamic binding, a port is assigned to a virtual machine only when the virtual machine is powered on and its NIC is in a connected state.”

    “In a port group configured with ephemeral binding, a port is created and assigned to a virtual machine by the host when the virtual machine is powered on and its NIC is in a connected state.”


Leave a Reply

Your email address will not be published. Required fields are marked *