In the OSI model, the Data Link layer (Layer 2) is responsible for error detection/correction and for assigning and handling MAC (Media Access Control) addresses, which are unique identifiers for network interfaces. This layer ensures reliable transmission of data frames between devices on the same local network. The Network layer (Layer 3) handles IP addressing and routing, not MAC addresses.
[Reference: ISA/IEC 62443-1-1:2007, Section 3.2.5 (OSI Model), Table 3; ISO/IEC 7498-1:1994 (OSI Reference Model)., ]
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