Tuesday, 24 June 2014

Layer 3: Network layer

           The network layer is responsible for packet forwarding including routing through intermediate routers, where the data link layer is responsible for media access control  flow control and error checking.
          A network is a medium to which many nodes can be connected, on which every node has an address and which  permits nodes connected to it to transfer messages to other nodes connected to it by merely providing the content of a message and the address of the destination node and letting the network find the way to deliver  ("route") the message to the destination node.

In this layer switching, Addressing ,Route definition, Route discovery operation is perform.

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