Every layer add its relevant data, (required for various typical operations such as identify packet location, sender/ receiver addresses, App. ports, etc) along with actual data to transmit.
Where as, every activities related to Packet is typically being performed in Network Layer/ IP layer.
internet
Transport layer is the fourth layer in the OSI model. Transport layer is responsible for process to process delivery of entire message. Other than that it also control connection, flow of data and error , thus will resend the packet if it get lost in between.
The data link layer is responsible for the moving of the frames from one hop to another and the delivery of packets within the same network.But when there is the need to send the packets form one network to another then the network layer comes into play and with the help of logical addess being provided by the network later as well as with the help of routers or switches the packets are being reached to the desired destination. Anand bhat(mca@kiit-870024) or IGMP
layer 3
The PDU at the Network layer is referred to as a packet. A PDU at the Data Link Layer is referred to as a frame.
The network layer is the layer that is responsible for routing packets on the network. This is the layer in which Internet protocol operates. In the seven layer OSI model, the network layer is the third layer from the bottom.
Session Layer traced lost Packets.
At which layer lost packets are traced?
internet
The layer responsible for determining the best path a packet should travel across an internetwork is the Network layer, which is Layer 3 of the OSI model. This layer uses routing protocols and algorithms to analyze network conditions and select the most efficient route for data packets. Devices such as routers operate at this layer to facilitate the forwarding of packets between different networks.
The layer responsible for routing packets to their destination is the Network layer, which is the third layer in the OSI model. It manages the delivery of packets across multiple networks by determining the best path for data to travel from the source to the destination. Protocols such as Internet Protocol (IP) operate at this layer, facilitating logical addressing and routing decisions.
This protocol would be the NIC (Network Interface Card). The NIC takes frames from layer 2 and converts them into electrical siginal's
Network Layer ( 3 )
transport layer of osi model is responsible for end to end delivery of packets over a network
I think PDR= Packets Received / Packets Sent Packets sent/received values should be from same layer. i.e. all from application layer or network layer...etc
network layer
Data Link Layer