When you are configuring the NIC teaming policy for a vSwitch, what happens when the Failback option is set to Yes?

Question

Options

• AA failed uplink will be left inactive upon recovery until another uplink fails.
• BThe vswitch is notified when a failover event occurs.
• CThe physical switches are notified when a failback event occurs.
• DA failed uplink is returned to active duty immediately upon recovery.

• A
  14% (4)
• B
  10% (3)
• C
  72% (21)
• D
  3% (1)

Explanation

Notify Switches Select Yes or No to notify switches in the case of failover. If you select Yes, whenever a virtual NIC is connected to the standard switch or whenever that virtual NIC's traffic would be routed over a different physical NIC in the team because of a failover event, a notification is sent out over the network to update the lookup tables on physical switches. In almost all cases, this process is desirable for the lowest latency of failover occurrences and migrations with vMotion. NOTE Do not use this option when the virtual machines using the port group are using Microsoft Network Load Balancing in unicast mode. No such issue exists with NLB running in multicast mode.

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