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Router is basically needed for internet connection. Router is the best path for forwarding the packets and they use protocols such as ICMP to communicate with each another and configure the best route between any two hosts. A router is connected with two networks and many more but commonly connected from different networks. A router is use for forwarding data packets.
In the router networks are the Internet, a router is a device or, in some cases, software in a computer, that determine the next network point to which a packet should be forwarded at next destination. A router is located any gateway and including each point of presence on the internet. Router is created data packet. Router is work at OSI (open system interconnection) modal.
Classification of OSI modal there are seven types mainly is: Physical layer, Data link layer, Network link layer, Transport layer, presentation layer, session layer and application layer. The router reads the IP address information in the packets to determine is next destination. It should be most familiar type of routers is basically home and business office routers that simply pass data etc.
A router may include a firewall, VPN handling and security function or may be these ought to be handled by the separate devices. Routers also basically perform network address translation, which allows multiple devices on a network to share a single public IP (Internet Protocol) address. Which route should be use to forwarded a date packets and such the physical interface connection.