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Home » Networking » Basic » What is Switching
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What is Switching

By Dinesh Thakur

Switching is the most valuable asset of computer networking. Every time in computer network you access the internet or another computer network outside your immediate location, or your messages are sent through a maze of transmission media and connection devices. The mechanism for exchange of information between different computer networks and network segments is called switching in Networking. On the other words we can say that any type signal or data element directing or Switching toward a particular hardware address or hardware pieces.

Hardware devices that can be used for switching or transfering data from one location to another that can use multiple layers of the Open Systems Interconnection (OSI) model. Hardware devices that can used for switching data in single location like collage lab is Hardware switch or hub but if you want to transfer data between to

different location or remote location then we can use router or gatways.

For example: whenever a telephone call is placed, there are numerous junctions in the communication path that perform this movement of data from one network onto another network. One of another example is gatway,that can be used by Internet Service Providers (ISP) to deliver a signal to another Internet Service Providers (ISP). For exchange of information between different locations various types of Switching Techniques are used in Networking.

Types of Switching Techniques

There are basically three types of switching methods are available.

Circuit Switching

Circuit-switching is the real-time connection-oriented system. In Circuit Switching a dedicated channel (or circuit) is set up for a single connection between the sender and recipient during the communication session. In telephone communication system, the normal voice call is the example of Circuit Switching. The telephone service provider maintain a unbroken link for each telephone call.Circuit switching is pass through three phases, that are circuit establishment, data transfer and circuit disconnectCircuit Switching

Packet Switching

The basic example of Packet Switching is the Internet.In Packet Switching, data can be fragmented into suitably-sized pieces in variable length or blocks that are called packets that can be routed independently by network devices based on the destination address contained certain “formatted” header within each packet. The packet switched networks allow sender and recipient without reserving the circuit. Multiple paths are exist between sender and recipient in a packet switching network.They does not require a call setup to transfer packets between sender and recipient.

Packet Switching

Advantage Packet Switching

The main advantage of packet switching network is the efficiency.The other advantage is that, it is faults tolerant. In packet switching,the quality of data transmission is kept high (error free).

There are two type of Packet Switching connectionless or Connection-Oriented.

Connectionless Packet Switching

It is also known as datagram switching. In this type of network each packet routed individually by network devices based on the destination address contained within each packet. Due to each packet is routed individually, the result is that each packet is delivered out-of-order with different paths of transmission, it depend on the networking devices like (switches and routers) at any given time. After reaching recipient location, the packets are reassemble to the original form.

Connection-Oriented Packet Switching

It is also known as virtual circuit switching.in this type of Networking packets are send in sequential order over a defined route.

Message Switching

Message switching does not set up a dedicated channel (or circuit) between the sender and recipient during the communication session. In Message Switching each message is treated as an independent blocks.
In this type of networking, each message is then transmitted from first network device to second network device through the internetwork i.e. message is transmitted from the sender to intermediator device.

Message Switching
The intermediate device stores the message for a time being, after inspects it for errors, intermediate device transmiting the message to the next node with its routing information. Because of this reason reason message switching networks are called store and forward networks in networking.

You’ll also like:

  1. Distinguish between Datagram Packet switching and virtual Circuit switching
  2. Switching Hubs – What is Switching Hubs? Characteristics of Switching Hub.
  3. What is Time space switching?
  4. Packet Switching and Circuit Switching
  5. What is IP Switching?
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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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