Link Aggregation Control Protocol (LACP) overview
Link Aggregation Control Protocol (LACP) overview
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LACP is a subcomponent of IEEE 802.3ad standard. The LACP can be a used to bundle multiple physical links between network devices into a single logical link.
LACP sets up LAGs automatically. Customers can choose to build a static LAG without LACP or a dynamic LAG by using LACP. LACP is not a link aggregation instance, but a protocol for defining it. LACP enables LAG to transfer from static LAG to dynamic LAG. This transfer allows information exchange of the link aggregation between the LAG component network switches. The information is delivered as packet in Link Aggregation Control Protocol Data Units (LACP PDUs). Each port on both switches can be configured as be active or passive using the control protocol.
- Active: Enables LACP unconditionally.
- Passive: Enables LACP only when an LACP device is detected. (This is the default state)
This configuration determines whether the system preferentially to transfers LACP PDUs.
Figure 7. LACP setup scenario