What is Router and its Function? Types of Router ?

Router Functions, Types of Routers and Understanding Routers in Internet Networks – Talking about computer internet network technology, there are lots of network tools that support the performance of a computer network . For those of you who have studied network computers at school, the functions and understanding of routers are certainly familiar, but for those who have never heard of the world of networking, the real question will be what is a router, and what is the function of a router.

Well this time the matob will review in full about the meaning of routers, types of routers & router functions in internet networks.

Definition of Router

What are routers? Router is a hardware device in a computer network that functions to connect several existing networks, both the same network and different networks in terms of technology.

There is also an explanation that the definition of a router is a computer network hardware that functions to send data packets using a network or from the internet from one device to another, where the process is called routing.

Each router has a DHCP (Acquisition Dynamic Host Configuration) function that can be configured so that it can share IP addresses. In addition, NAT (Network Address Translator), an installation that allows sharing an IP address or Internet connection with other IP addresses, is also found on routers.

Router function

Of course, with reference to the explanation of the previous definition of routers, the main function of each router is to be able to connect 2 or more networks to then be able to distribute data packets on one network to another.

Overall, while some of the router’s functions are as follows:

1. Routers have a function to connect in several networks so that users can send data packets from one network to another. The connection process is to distribute IP addresses to every computer in the network, either statically or by DHCP (Dynamic Host Configuration Bottle).

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2. The following function of the router is to be able to send information or data from one network to another where the system will work in a way similar to a bridge.

3. Another function of a router is to be able to connect to a local network using a DSL (digital subscriber line) connection, which is now known as a DSL router.

Router technology is now more sophisticated, where its use is not only through a wired LAN connection, but also with wireless technology. That way, the router can connect to all computers, laptops, and other devices that are still within range of the router.

How routers work

As explained in the previous definition of a router, the function of a router is that you can connect multiple networks and facilitate a transmission between these networks. In this case of course the router requires at least two network cards or network interface (NIC) installed in each network.

1. Basic routing:- connect two networks using a router

There are two networks with routers which are very simple and easy to configure. For networks using large and complex, of course, the configuration will be different and more complicated.

For example, if you want to connect 3 networks to connect in two different ways, namely:

  • Connect in series using 2 routers.
  • Connect directly to each other using 3 routers.

2. Connect 3 networks with multiple routers

In configuration 1, if the router (router A or router B) has a problem, subnet A’s network data will not be sent to subnet C because there is only one route.

In configuration 2, if an additional router is provided between subnet A and subnet C, there will be two routes to subnet C to make the network even more efficient.

Each router will choose the fastest route to send data from one subnet to another. Consider configuration 2 in the picture above, if you want to be able to send data from subnet A to subnet C, then the fastest route is through router C instead of through routers A and B.

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Router type

In general, today’s routers can be grouped into several types. According to the understanding of the router itself, the types of routers are :

Routers by app

1. Router app

A router application is an application that a user can install on a computer operating system so that the computer operating system can function as a router. Some of the applications include;

  • Wingate
  • WinProxy
  • Winroute
  • Spygate

2. Router hardware

Router hardware which is hardware that has router-like capabilities. With this capability, this hardware can be used for;

  • Share IP address (IP address)
  • Share the Internet network in an area, for example, routers such as access points and regions that acquire IP addresses and Internet connections called Area Hot Spots.

3. PC routers

A PC router is a PC / computer that has high specifications which can then be modified so that it can function like a router. The minimum specifications that must be found on a computer are:

  • Pentium II processor with 10 GB hard drive and 64 RAM.
  • There is a LAN card.
  • A special operating system for PC routers, Mikrotik.

Router based on mechanism

1. Static router

A static router is a router that has a static routing table configured by the network administrator manually. Routing is the simplest routing configuration that can then be performed on a computer network. The use of pure static routing that exists in a network means that to be able to resolve every entry in the forwarding table on every router on that network.

The use of static routing in small networks is certainly not a problem, just a few entries to be completed in the forwarding table of each router. But, no doubt, you can imagine what, if you have to complete the forwarding table in each router, the number is not small in a large network.

2. Dynamic router

Dynamic router, which is a router that can perform the routing (registration) process, can run automatically and dynamically after going through the network administrator configuration.

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3. Wireless router

Wireless router or wifi router is a router that can work without using a cable because it only relies on air media to be able to send a data packet.

The above is a brief overview of the meaning of routers, types of routers and router functions in computer networks. Hopefully this article is useful and will add to your broad knowledge.

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