What is Router? its Components and working ?

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Routers:
1. A device which connects different networks frequently over a large distances.
2. A router is a device that forward data packets between different computer networks.
3. Act as a gateway between two completer
4. It Operate in network layer of OSI Model.
5. Working:
1) A Router is connected to two or more data lines from different networks .when a data packets comes in on one lines, the router reads the address information in the packets and then determine its ultimate destination.
2) A Data Packet is typically forwarded (Traffic Directing) from one router to another through the networks until it gets to the destination node.
Components of the Router
How Do Routers Work?

1) Router powers on.
2) Loads it's OS from flash.
3) Router loads the configuration file last saved to NVRAM.
4) Sets up the network interfaces and routing protocols it will run.
5) The router adds the network address and subnet for each interface into routing table.
6) On request it checks the destination IP address against its routing table.
7) Transmitting the packet to the next router.
8) Repeats the process until the packet reaches the destination.
9) The process is mostly the same for any router.

There are two major groups of interfaces.
1) LAN Interfaces
2) WAN Interfaces









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