Primarily at layer 1 and 2. The frame adds this information for these layers.
Layer 3 (network layer).
Only the Network Layer (Layer 3) portion of the datagram is used by the Network Layer (Layer 3) portion of the TCP/IP Model. The network portion of the datagram includes IP Addressing information, and things such as TTL (Time to Live), and Datagram Priority markings.
Layer 3 i.e, network layer of the OSI model is used to IP addressing.
In the TCP IP model, routers belong in layer 3. This is a common model used in setting up information technology systems.
internet
The Network Layer in the TCP/IP model is responsible for routing data packets between different networks. It determines the best path for data to travel from the source to the destination through various interconnected networks. The Internet Protocol (IP) is the main protocol used at this layer to address and forward packets.
Networking layer of the OSI model
The Physical layer is responsible for the actual hardware connection. The physical addressing is handled by the Data Link Layer.
The OSI model has seven layers whereby each layer has its function. The Data Link Layer is responsible for addressing data messages so that they reach their destination correctly.
Physical layer which is the first layer in OSI reference model is responsible for signal encoding and decoding.
There are in total seven layers in OSI model . OSI model layer that is responsible for the termination of connections between hosts is session layer . Session layer is responsible for the dialog control .
DHCP runs at the application layer of the OSI model.