Layer2Frames
Layer2Frames is a term used to describe the unit of data exchanged at the data link layer of the OSI model. It denotes the encapsulated payload that a network interface card delivers to or receives from a link, such as an Ethernet link. A Layer2Frame typically contains a header with destination and source hardware addresses, a EtherType or length field that indicates the protocol carried in the payload, and a trailer that may include a frame check sequence for error detection. In many networks, optional metadata such as VLAN tags (802.1Q) can be appended to the header, allowing segmentation and traffic management.
A Layer2Frame carries payload from layer 3, such as an IP packet, and may be subject to
In practice, Layer2Frames are processed by switches and bridges to make forwarding decisions based on MAC addresses