β’ Colon-separated: AA:BB:CC:DD:EE:FF (most common)
β’ Dash-separated: AA-BB-CC-DD-EE-FF (Windows style)
β’ Dot-separated: AABB.CCDD.EEFF (Cisco devices)
β’ No separator: AABBCCDDEEFF (some APIs)
β’ OUI prefix: First 3 bytes identify the vendor