What is Router?

Do you know what is a router (What is Router in Hindi) is and how does this networking device work? You must have heard the name of Router because it is used for the Internet nowadays. Whenever you access the Internet except for the mobile network. Then you understand that you are accessing the Internet from a Wireless Networking Device.

What is Router
What is Router

Still don’t believe my words. You once ask anyone, brother, do you use any device for WiFi. His answer will definitely be related to today’s article. The question also comes, what is the work of this device.

Think you are a postman and your job is to deliver letters to different houses every day. But you can send a letter only when you have their address and with this, you will also know the way to go to the house of the letter.

a letter with what is a router which data  Let us now know in detail about this Networking Device 

What is a router – Router in English

The router is a Hardware Networking Device. It is used in the network. Whenever any data that travels from one network to another in the form of a Packet 

Then Router receives the packet data, and after analyzing whatever hidden information is in the data packet, forwards it to the Destination Device. Separate this Networking Device. Separate networks are used to connect a wire or wirelessly to APSA.

By the way, it is also used in the house, which we call Wireless Router. Which you Internet Access.

It has an Internetworking Operating System, CPU, Memory Storage and some I/O Ports as you must have seen. This Operating System is not like Windows or MAC. Routing Algorithm and Routing Table are stored in Storage Memory.

Through Routing Algorithm and Routing Table, it is known that the Input Packet Receive has been done. To which network or which device has to send that packet. Which is called Analyze. Ex you will understand better friend.

EX– A courier boy, like a courier boy, is a Router. Courier boy receives Parcel from courier Office  After this, the address of the Parcel whose name has come on top of the Parcel remains. After seeing the courier boy address, he decides in which location and where to give Parcel.

Only after that, he sends the parcel to the receiver’s address. (This process is applicable on all parcels. The list of addresses is kept with the courier boy). Now let’s understand this example through the router.

According to the above example “Parcel” is your Data packet. Like finds courier boy Address  Similarly, Router also removes the address from the packets by Routing Table  Receiver Address Select Shortest Path does then sends it to Receiver 

Courier boy has a list of addresses similarly the Routing Table also has details.

How Router Works

As you know, the router works to forward packets from one network to another. It can also be said that it sends packets from Source to Destination Address. Its main job is to receive the packet and deliver it to the receiver.

You sent a Facebook message from your computer to your friend who is currently in Delhi. First, the message gets converted into a packet and reaches the nearby router. Now the router checks the Routing Table with the Routing Protocol.

All the nearby routers in the routing table have their address and path distance. Then after this, the packet is forwarded to the nearest router, in which the IP address of the receiver remains.

As soon as the packet reaches the next router, it also checks the shortest path again and is sent to the next router. In this way, the packet reaches the receiver computer.

A Router also connects many networks and also maintains its Routing table. maintain means keeps updating. Each router keeps the information about the router around it.

Routing Protocol resides in all routers, with the help of which they communicate with each other. And along with this share the information of their connected networks among themselves, update the routing table. This is how this networking device works.

Router Components

As you know, its information has been given in this article above. It is a specialized computer. It also has different parts. Whose names are given below

  1. Central Processing Unit (CPU)
  2. Flash Memory
  3. Non-Volatile RAM
  4. RAM
  5. Network Interfaces
  6. Console

Central Processing Unit (CPU)

CPU which is a brain that runs special software named os. There are some OS like Junos which run Juniper Routers and Cisco IOS runs Cisco Routers. This operating system manages all the components of all the routers.

Flash Memory :

Every electronic device requires memory in which the operating system is stored. Compare Flash Memory with Computer, then it is a  Hard Disk  Routing algorithm, Routing Protocol, Routing Table  Store is there.

Non-Volatile RAM:

You must have understood from its name that it is Memory Permanent.  In this  Operating System’s backup and startup, Version Store is there. Whenever the Router is booted, programs are loaded from this memory itself.


Whenever the router is on, the operating system is loaded into RAM. After this, the Router determines the Routes. Views Routes Information from other Routers (via RIP RIP (v1 and v2), OSPF, EIGRP, IS-IS or BGP).

ARP tables, routing tables, routing metrics and other data are stored inside

RAM   ARP tables, routing tables, routing metrics With the help of these, Packet Forwarding Process Speed ​​is done.

Network Interfaces:

Always there are many network interfaces in routers. There are many drivers in the operating system. With the help of these drivers, the routers get to know in which port which network’s WIRE is connected. There is the ability to learn the routes from other routers and the packet is transmitted on the correct route.


All the work of managing and configuring the router is done in the console itself. Configuration and troubleshooting commands are provided from the console.


Now let’s know about the functions of the Router:-

  • Prevents LAN from broadcasting.
  • It works like default gateway
  • The protocol helps in the translation
  • Works to make a route in the middle of the network.
  • Works to deliver data from sender to receiver
  • Works to connect two networks.
  • Keeps building a loop-free path
  • Finds the shortest path to reach the packet to the destination.

Routing Table

Routing Table is made up of many rules, as its name is Table. That is why it has always been in the form of a Table. It is used to determine in which direction the packet will be sent in the Internet Protocol network.

All IP enabled devices like Router and Switches all use Routing Table.

The routing table contains all that information, which can be easy to select the best path(s) to send the packet to the destination. Source and destination information is kept in every packet.  

After the packet is received, the network device scans the packet and matches the information received with the Routing Table entry. After this, this packet will be sent to which network device it is determined.

Routing Table Table contains the following information

  1. Destination: IP Address of the destination to which the packet is to be sent.
  2. Next hop: IP ADDRESS of the next network device
  3. Interface: The packet is sent to know the interface of the network to which it is sent.
  4. Metric: How much will be the cost of all the routes present in the routing table and it is easy to know which route will cost less to send the packet.
  5. Routes: All Attached Networks or other Devices with Routers have information and Routes information.

Routing tables can be maintained manually or dynamically. The table of static network devices does not change until the administrator changes.

In dynamic routing, Devices make their own Routing Table and also maintain it. For this, devices use the Routing Protocol. They also exchange information with each other.

Types of Routers

You will get to see different types of Routers in the market. According to the use, they have been separated. Let us know about them in detail. .

Broadband Routers

Broadband Router can do many types of work. They are used to connect computers and connect them to the Internet.

If you want to connect your phone to the Internet through Voice Over IP Technology. So you understand that for this VOIP connection, you have to use Broadband Router. These are a special type of Modem that also have Ethernet and Phone Jacks.

Wireless Router

Wireless Router Nowadays everyone knows about them. They are used more in home, office, college. Do you know that you are currently accessing the Internet from this Wireless Router only This wireless router creates an area of ​​​​the wireless signal and all the computers, tablets, mobile phones in this area can use the Internet

Keeping in mind the security, there is a Password System in them. Password and IP addresses are used for security. You must have seen when you use WiFi. Then you need to enter a password before you can connect to WiFi. This is its security feature.

It has always been my endeavour that you get correct and accurate and complete information. You know today what is router  (What is Router in English) is and how it works.

It is hoped that you must have liked this article, how did you feel, you must tell below. If you want to ask any questions now, then definitely write in the comment box below. If you want to give any suggestion or advice, then definitely give it which is very useful for us.

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