The trace mac enable command enables GMAC trace.
The undo trace mac enable command disables GMAC trace.
By default, GMAC trace is disabled (except the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S).