What is a Router?

A router is a specialized tool that is connected from a computer up to more than just a network. It mainly runs software that lets it to move up data from network to network. The routers operate at the layer of the network known as OSI Model- Layer 3. The main function of the router is to connect the networks together and then keep the layer 2 broadcast traffic right under the control. There are actually some companies making routers. The reasons why a router is necessary are the following:

• Restrict the broadcast of the network to the LAN. The network administrator could then break up the network with a very large number of hosts in two smaller types of networks.
• It will act as the default gateway. With the networks today, people would be connected to the internet. Whenever your computer wants to talk to a computer on another network, it does so by sending your data to the default gateway, which is your router.
• They could move the data in between the networks. It works for routing and the transmission of the protocol.
• It gives the best path calculations.
• It gives out route advertisement.

The router is an important thing when it comes to connecting to the internet.