What is a Router? Why do we need a router? Router Components and Parts.

What is a Router? Why do we need a router? Router Components And Parts..

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let’s move on the point by this article you will know about what is the router? why do we need a router? and also you will notify by router components and parts that will help you lots to increase your knowledge criteria…

What is a Router? Why do we need a router? Router Components & Parts.

A router is a networking device that joins two different networks by forwarding data (Internet Protocol) packets from one network to another network and it is also known as IP routing, IP routing is in the form of either uni-casting, multi-casting, and broadcasting.

A router consists of two nodes named as a source node and a destination node, a source node data packets are transferred and the destination node receives data packets from the source node. Generally, data packets are forwarded from one router to another router through networks until it reaches destination node and this continuous transformation of data packets from one router to another router forms that constitute an inter-network after Admin login.

Here we will discuss what is a Router?

The main function of a router is to connect two or more networks together and maintaining broadcast traffic under control. There are thousands of companies producing routers such as Linksys, Juniper, Netgear, Nortel, HP, D-Link and Belkin, Redback, Cisco, Lucent, 3-Com,  etc…

Every router has an IP address to connect or modify routers settings through web-based interference, this IP address will be given to a router while manufacturing that router. A router consists of two types of a network named as Local Area Network LAN and Wide Area Network WAN. LAN is an internet network limited to a small office, single building, multiple buildings inside the campus and LANs are faster and more secure than WANs.

Why do we need a router?

Here we are explaining about “Why do we need a router?” and functions of a router are given below.

  1. The router acts as a default gateway.
  2. The router does protocol translation.
  3. Router forwards/moves (route) the data between networks.
  4. Route data between networks.
  5. Routers learn and go through loop-free paths.
  6. A router calculates best paths for reaching the network destinations.

Router Components & Parts:-

A router is a specialized networking device that transfers data between two or more computers and it have some main parts given below.

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

Central processing unit maintains special software called operating system, in CISCO routers IOS or Cisco operating system will be used and in Juniper routers, JunOS will be used. This operating system provides all the networking functions of the router.

  • Flash Memory:-

Flash Memory is Just like a hard disk drive in your computer, if you use SSD in your computer then your computer used Flash ram just like as routers. The operating system will store in flash memory routers.

  • Non-Volatile RAM:-

Non-Volatile RAM (Random Access Memory) is an additional memory used to store Operating system and backup. So the router is boot from here and also all applications of it boot from Non-Volatile RAM.

  • RAM (Random Access Memory):-

RAM is a main part of routers and also in computers where the operating system in routers or computers is loaded. RAM is also used for caching routing tables, routing metrics, and ARP tables and data that can speed up the process of packets forwarding. After finishing of routers startup then router starts to calculate its own routes and receives network routes via OSPF, EIGRP, IS-IS, and BGP, etc… from other routers.

  • Network Interfaces:-

Generally, routers have a number of network interferences, the operating system maintains router drivers to access the network hardware in the interface modules. A router consists of two nodes named as source node and destination node, a source node data packets are transferred and destination node receives data packets from source node, at startup of data packets at source node knows destination node, Routers will know at which ports as they start-up, After that routers learn from other routers they are connected to and then learn which interface to transmit packets on to reach a remote network destination.

  • Console:

Management of a router and configuring a router will be done at the console of individual devices like as troubleshooting and diagnostics. These are some basic and main components of the router.


There are thousands of data packets or IP packets are transferring to one router to another router per second, routers are not only traffic routes to other networks but also it finds shortest distances and uses it, routers learn this shortest distance by using metric value.

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Read More – What Is Task Manager & How To Open?

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