What's the LAG interface period be if the two switches have different periods set Considering a LAG interface between two devices A and B, A is configured to have LACP fast transmission and B to be LACP slow what would be the resulting aggregate interface's period be?

`lacp rate` configures the rate at which LACP control frames are sent from an interface. Each side can have its own rate (`normal`= 30 s, `fast` = 1 s).

The fast rate can be useful when the L1 (physical layer) link state doesn't reflect actual L2 (link layer) connectivity, e.g. when an external media converter is used.

`lacp rate`does not have any effect on the actual interface transmission rate (except for increasing overhead a tiny bit).