Also known as “router”, the router is an electronic device that allows you to connect several devices that are connected to a network, its main function is to move data traffic through the correct path from one network to another, this is called interconnection of subnets.

The world of networks is quite complex, however, it is usually a very entertaining, striking and interesting subject, even many people like to be updated with technological advances and cutting-edge technology.

Now, although it is true that these devices have been working for a long time, not everyone knows for sure their true purpose and what they were designed for, for this reason and others, I invite you to continue reading the next post, where you will learn a little more. about its operation, benefits, and the models that are currently available on the market, among other highlights.

What is it for and how does a router work?

As we mentioned earlier, it moves the data traffic through the appropriate path, that is, the data packets are sent and received through the best available route at the time it is required. This is done through various protocols that are responsible for routing and deciding what is the next step or the shortest route.

Among the protocols that it handles is the Dijkstra algorithm, which is also known as the minimum paths algorithm and, as its name refers, establishes the shortest path between an origin vertex and a final vertex that make up the graph.

Being components that are part of a network, they perform the following tasks:

  • Route packets: by means of algorithms they determine the routes that the data packets have to follow from the sender to the receiver and passing through different nodes. There is a routing table, it is also known as a routing table and it is the one that is responsible for storing in a document the routes that exist between the nodes of a network.
  • Packet forwarding: it is a basic method by means of which information is shared between the devices of a network in its interface of output and input of messages.

Benefits of a Router

There is no doubt that having a good network in your home or office makes life much easier and simpler, that is why when you decide to optimize it through a device you will find the following benefits:

  • Provides security in your home or work network, you can block content that you do not want other users to enter, this refers to sexual content, violence or any other content that is established as inappropriate.
  • Connect several devices simultaneously to your internet network and get the best out of the data interface between them.
  • You can control and regulate the data interface available for each device, this means that you can assign a maximum upload and download speed allowed for a certain connected device, with this you control network traffic.
  • With the wireless models, you get undeniable savings in wiring and physical structure of a network, since wireless connections allow you to connect several devices without the need to use cables.
  • Access not allowed by other users is indisputably one of the things that worries the most today, however, Routers have much more efficient security protocols with which you can protect your network in the best way.

Types of Router

Actually these devices do not differ by their type, but by their use and by the benefits and characteristics that they can bring internally, however, the more properties they offer, the higher their cost, here is a list of the most common uses:

  • For office or home use : it is the best known and most common for what is used in small businesses and in homes. Internet connection is established to different devices through wired or wireless connection and security is provided to an internal network for private use.
  • For commercial use : their design provides greater power and more speed, they are usually characterized by being larger than those for home use and are frequently used in universities and academies, as well as in small and medium-sized companies.
  • SOHO : it is used for connectivity in a reduced geographic space.
  • Business : it is cataloged with basic access and distribution.
  • Multipurpose : they use it most of all to share data through BGP.
  • Cable connection : requires cables to connect to equipment so it prevents mobilization.
  • Wireless router : it has an antenna, so other devices maintain connectivity up to a certain range, which varies depending on the model and its capacity.

IP addresses

These devices normally handle two IP addresses, one public and the other private:

  • Private IP: it is the one that has an internal or local network and works to concentrate communication between several devices on the same network.
  • Public IP: it is the one offered by your internet provider so it can be of the static or dynamic type, although most of the time the most common is the dynamic type.

External and internal parts of a router

  • External parts: on the back it has the on and off button, on the front it contains a pair of indicator LEDs, power connector, it has a port to connect to the computer in the case if it is going to be configured, it has a fast ethernet port and other ports to be connected to the network. It also has connections that go to the union services for WAN and LAN networks.
  • Internal parts: they have a volatile type random access memory (RAM memory) that is used for routing, cache storage for the operating system and the execution environment. The ROM memory is used to store the POST code and the flash memory stores the profile of the operating system software.

Advantages of a router

  • Security: it allows to have orientation to the mechanism to have ease in the process of locating in some failure of the network.
  • They are easy to configure and offer greater security by preventing the presence of intruders on your data network.
  • Flexibility : the networks connected to the Router have no limits in their topology, so the networks of greater extension are the more complex than the networks linked by bridging.
  • Price ratio: the price is higher than other simpler devices, however, its maintenance is minimal and the services are very great.
  • They are intelligent so they can select the indicated path between two or more simultaneous connections.

Disadvantages of a router

  • They are slow to install and configure depending on the network topology.
  • Very complex, you will need to know about the subject to be able to configure it and get the best out of it.
  • They are more expensive than bridges.
  • Each protocol to be routed must be known to the device.
  • Slow packets compared to bridges.

The best routers available on the market

  • In the first generation of Router with WI-FI, a wide channel of 80 MHz and a band of 5GHz are used, so this allows greater speed thanks to the bandwidth. With WI-FI N, the maximum bandwidth was 40 MHz. In the second generation, with WI-FI AC, a channel width of up to 160 MHz was made known.
  • With the new technology, there are teams that come with 3 antennas in MIMO 4T4R configuration, which will achieve a maximum speed of 1300Mbps, for which the manufacturer ASUS has launched the 4-antenna Router in MIMO 4T4R configuration capable of achieving even more 1700 Mbps on a 5GHz band.
  • It has a signal modulation of 256 – QAM and techniques to be much more efficient wireless transmission such as LPDC (Low Density parity check) and STBC (Spam time block codes).

D-link DIR – 868L AC1750

Its main characteristic is that it incorporates simultaneous dual band with WI-FI AC and it can reach speeds of 450 Mbps in the 2.4 GHz band and up to 1300 Mbps in the 5 GHz band thanks to its three antennas.

ASUS RT- AC68u AC1900

It has simultaneous dual band with WI-FI AC so the 2.4 GHZ band has a 256-QAM signal modulation thus achieving a speed of up to 600 Mbps (which is more than the 450 Mbps offered by its close rivals). Its technology is called turboQam and it is owned by the Broadcom company, since its equipment has a Broadcom chipset and it benefits from an additional speed.

TP-LINK Archer C9 AC1900

Designed with the latest WI-FI AC wireless technology and allows reaching a speed of up to 600Mbps in the 2.4GHz band and a speed of 1300Mbps in a 5 GHz band, so this equipment has a speed of (600 + 1300 ) and uses three antennas in 3T3R MIMO configuration for each band and offers high performance.

A little history

These devices were used in the first Internet project known today as “Arpanet”, these devices that although they are not even a shadow of the designs that are known today were responsible for the interface and processing of messages between two or more different devices, which was one of its main characteristics and differentiated it from switches which made data connections, but between computers with the same characteristics.

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Dr. Samantha Robson ( CRN: 0510146-5) is a nutritionist and website content reviewer related to her area of ​​expertise. With a postgraduate degree in Nutrition from The University of Arizona, she is a specialist in Sports Nutrition from Oxford University and is also a member of the International Society of Sports Nutrition.

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