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How vifs work in Data ONTAP

A virtual interface (vif) is a feature in Data ONTAP that implements link aggregation on your storage system. Vifs provide a mechanism to group together multiple network interfaces (links) into one logical interface (aggregate). After a vif is created, it is indistinguishable from a physical network interface.

The following figure shows four separate network interfaces, e3a, e3b, e3c, and e3d, before they are grouped into a vif.
Network interfaces before grouping

The following figure shows the four network interfaces grouped into a single vif called Trunk1.
Network interfaces after grouping

Different vendors refer to vifs by the following terms:
Vifs provide several advantages over individual network interfaces: