A router is another computer networking device. Its basic use is it interconnects two or more computer networks. It also forwards data packets along networks.
Because of different physical types of network, it can have many interface connections. However routers can analyze the data being sent over a network, change how it is packaged and send it to another network or over a different type of network.
It uses headers and forwarding tables to help in determining the best path for forwarding the packets. It also uses ICMP protocols to communicate with each other and configure the best route between any two hosts. (more…)