Saturday, 16 September 2017

The Role of Routers in a Network

What is a Router?

A Network Router is defined as an electronic device that connects multiple networks by sending data packets. Normally, a data packet is forwarded from one router to another router via networks until it reaches its destination node. 
The most common types of Routers are home and small office Routers that simply forward IP packets between home/office computers and the internet.

Functions of a Router

The main function of a Router is to forward the packets based upon a routing table. They also offer traffic segmentation, multiple broadcast domains and define network layer addressing subnets and networks. IP address are assigned to those networks which are defined by Router Network Adapters or Ports. These assigned IP addresses are considered as the default gateway to PCs, computer servers, or other networking devices.

In simple words, Routers communicate with each other to share information about the available paths to send data packets. 

Difference Between A Switch and Router

Actually, Routers and Switches are computer networking devices which allow one or more PCS to connect to other PCs, networked devices, or to other networks.

A switch connects multiple computers together in a LAN. After the first data transfer, it creates a “switch table” which matches the ports to connected devices by their MAC addresses.

A Switch can connect several devices in a LAN, and it can differentiate the computers as the data passes through it. Switches can recognize which port is connected to the device.

In a Router, IP address is stored in a routing table. The Routers Connect two or more networks, but at the same time, a Switch connects two or more nodes in the same network or different networks.

Types of Routers

Wired Router

They are box-shaped devices that connect directly to computers through wired connections. 

One connection port on a wired Router equips it to connect to a modem for receiving Internet data packs, while other set of ports allow it to connect to computers 

Virtual Router

A Virtual Router acts as a default Router for computers sharing a network. This Router works using the VRRP (Virtual Router Redundancy Protocol), which becomes active when a primary physical router fails.

Core Router

A Core Router is a wired or wireless router which distributes Internet data packets within a network, but same time, doesn’t distribute data packets between multiple networks. 

Wireless Router

A Wireless Router forms a wireless local area network (WLAN). The most common standard for WLAN is Wi-Fi. To protect Wi-Fi networks, wireless routers normally employ wireless media access control (MAC) address filtering, and Wi-Fi Protected Access (WPA) security.

Some of the Best Routers Available in the Market, Currently:

  • Cisco Linksys E900 Wireless N300 Router
  • Netgear WNR614 N300 Wi­Fi Router
  • TP-Link TL-WR740N 150Mbps Wireless N Router
  • Netgear WGR614 Wireless-N 150 Router
  • D-Link DSL-2750U Wireless N ADSL2+ 4-Port Wi-Fi 
  • Asus N600 RT N56U Dual-Band Wireless Gigabit Router
  • Apple AirPort Extreme Wireless Router

Advantages of Routers:

  • It can function on both LAN & WAN
  • Router can determine the best path for data 
  • It can connect different media & architectures.
  • Router can easily filter the broadcasts.

Disadvantages of Routers- 

  • Router works only with Routable Protocol.
  • Router is more costly than Hub, Bridge & Switch. 
  • Routing updates will consume bandwidth.

Networking Courses in Kochi 

Soften Technologies offers Computer Networking training with certification in Cochin, Kerala. CCNA, CCNP, CCIE, MCSE, RHCE courses are offered at our networking training academy in Kadavanthra, Cochin. 

Please visit our Networking Training page for the detailed information, syllabus and outline.

CALL: 8129199511, 0484 4037036 for your queries.