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Link Aggregation Control Protocol (LACP)

LACP, a subcomponent of IEEE 802.3ad, provides additional functionality for LAGs.

About enabling LACP:

When LACP is not enabled, a local LAG might attempt to transmit packets to a remote single interface, which causes the communication to fail.
When LACP is enabled, a local LAG cannot transmit packets unless a LAG with LACP is also configured on the remote end of the link.

By default, Ethernet links do not exchange protocol data units (PDUs), which contain information about the state of the link. You can configure Ethernet links to actively transmit PDUs, or you can configure the links to passively transmit them, sending out LACP PDUs only when they receive them from another link. The transmitting link is known as the actor and the receiving link is known as the partner.

Note: Presently, LACP can be configured only for Ethernet Switching family.

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