packet layer

Packet Layer

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Packet Layer Details:

This layer is also referred to as the network layer and it is in charge of the forwarding process involving routing through other routers. This layer offers an end-to-end connection between various hosts and forwards data packets through as many physical networks as possible. The packet layer has several crucial responsibilities including addressing, routing, and traffic control. Internet Protocol (IP) works at this layer and was intended for packets switching between two hosts of different networks. Routers use source and destination addresses in the IP packets and forward them from one router to another until they get to the host they are targeting. Routers at this layer possess dynamic routing tables which contain lists of available networks and explain the way each packet has to be sent depending on such parameters as speed and traffic. Another function of the network layer is to further subdivide the packet and reassemble it in the case where the packet is too big to pass over the layer immediately below the network layer. It also manages logical communication with devices through IP addresses to identify and distinguish between the source and the intended host. Technologies like IPsec also work at this layer to apply encryption on the packets before transmission. In summary, the packet layer offers core networking services that make it possible for devices globally to connect and share information using a packet routing protocol.

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