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
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.
The network layer (Internet Layer in TCP/IP model) is the second layer of the TCP/IP model. IP (Internet Protocol), ARP (Address Resolution Protocol), RARP (Reverse Address Resolution Protocol), ICMP (Internet Control Message Protocol) and IGMP (Internet Group Management Protocol) are the protocols at this layer. http://www.omnisecu.com/tcpip/internet-layer.htm
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 .
The Open Systems Interconnect or OSI model has seven layers. The layer that is responsible for creating frames is the Data Link layer.