What is a router?
A router, router or rter, is a device that provides connectivity conditions at the network level or at level three according to the OSI model. In that order of ideas it is a device that allows different networks or computers to connect to each other, as is the case of sharing the same internet connection.
To function, the router It uses a protocol for routing, thus enabling it to communicate with other routers and therefore share information with each other, to identify the route that is most appropriate and fast when sending data.
How a router works
The router receives the broadband signal via a DSL type cable, processes the information and sends radio waves so that they are distributed over a given perimeter. These waves are captured by the devices that are within said perimeter.
The reverse process can also occur, that a device that is wirelessly connected to the router wants to send information, the router processes it and sends it to the server via the aforementioned DSL cable. These processes are extremely fast since they occur in microseconds.
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What is a Router for?
He router serves in its most common use so that an office, house or small business can easily access the same internet connection. Therefore, it is a device that acts as a receiver of the network connection to distribute it among the other computers that are connected. Therefore, it connects to an Internet network or if you want to a local area.
In the last time they have developed wireless routers, which functions with mobile and fixed networks, which is why they are going to provide Wi-Fi connections to the other devices in an office, housing or larger spaces.
Routers provide connectivity and accordingly can be classified into types:
- Connectivity Small fice, Home Office (SOHO) They are used with frequencies in homes to connect to a broadband service such as IP over cable or ADSL.
- Company router In companies, routers are of all sizes, so depending on the needs of the team.
- Access They include SOHO and are on customer sites such as a branch.
- Distribution Add traffic to multiple access routers, both for the same site or when obtaining data flows that come from multiple sites
- Core In certain cases the router can be a backbone to interconnect and thus distribute connectivity on several levels.
- Edge They are responsible for linking autonomous systems with a backbone internet network or other kind of autonomous systems.
- Wireless routers Traditionally they are linked to fixed networks, but nowadays wireless routers are a reality for fixed and mobile networks (WiFi, Edge, GPRS, UMTS, Fritz! Box, WiMax, among others). The principle is the same, but in this case the connection is wireless with the devices.
- Domestic routers They are the ones that sell in a typical way for homes and in reality they are not routers anything else, but customer local teams They have modem, router, switch and sometimes WiFi access points.