This article provides information about minimizing the delay for a physical switch to detect NIC teaming failback.
Alternatively, set Failback to No. This option determines how a physical adapter is returned to active duty after recovering from a failure. A failover event triggers the network traffic to move from one NIC to another. When a link up state is detected on the originating NIC, traffic automatically reverts to the original network adapter when Failback is set to Yes. When Failback is set to No, a manual failback is required.
For related information, see VMware Virtual Networking Concepts.