There are two types of overlay access lists such as standard overlay access list and extended overlay access list.
The standard overlay access list is available as part of the ternary content-addressable memory (TCAM) profile. Overlay access lists of this type have limited qualifiers and action.
The extended overlay access list is available as part of the ternary content-addressable memory (TCAM) profile. Overlay access lists of this type have extended qualifiers and action.