Routers

The router connects a computer network to another computer network or a computer network to the Internet.

What is a router?

A router is like a postman for your computer network. It's responsible for directing traffic between different networks, ensuring that your messages and data reach their intended destinations.

It's like a GPS system for your digital world, guiding your data through the complex web of networks that make up the internet.

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Routers work by analyzing the addresses of incoming and outgoing data packets, determining their destination, and forwarding them on their way. They also provide a vital layer of security, protecting your network from unauthorized access and preventing malicious traffic from reaching your devices.

How does it work?

A router is a device that forwards data packets between networks.

Routers are also known as gateways that help connect different networks together and form connections between these networks.

The router will help two different networks talk to each other. Routers connect different switches, hence all the devices are connected to switches. So think of routers as different bridges that connect all the computers on the internet to each other.

Routers run routing protocols that allow them to "talk" to each other so that they can exchange information about the networks they are connected to.

This information is updated to the routing table which is used as a reference to decide which router the data needs to be forwarded to.

In practice, what this means is that routers are necessary for an Internet connection, while switches are only used for interconnecting devices inside a network.