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How interface groups work in Data ONTAP

An interface group is a feature in Data ONTAP that implements link aggregation on your storage system. Interface groups provide a mechanism to group together multiple network interfaces (links) into one logical interface (aggregate). After an interface group 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 an interface group:

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The following figure shows the four network interfaces grouped into a single interface group called Trunk1:

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Different vendors refer to interface groups by the following terms:
Interface groups provide several advantages over individual network interfaces: