Is internet is using packet switching as a default transmission techniques? Is there any advanced option available to communicate data on internet. Discuss with example.

In telecommunications, packet switching is a method of grouping data that is transmitted over a digital network into packets. So yes, Internet is using packet switching technique as a default transmission technique.

MPLS (Multi Protocol Label Switching) is a option to communicate data on internet. Let's see some information about it.

Multiprotocol Label Switching (MPLS) is data forwarding technology that increases the speed and controls the flow of network traffic. With MPLS, data is directed through a path via labels instead of requiring complex lookups in a routing table at every stop.

Working-

In MPLS, packets are directed through the network based on an assigned label. The label is associated with predetermined path through network, which allows higher level of control than in packet switched networks.

With pure IP (Internet Protocol) routing in a packet switched network, each data packet could determine its own path through the network which has dynamic flow, but not predictable. And however it is very cost effective.

In previous circuit switched networks, physical wires and telephone lines carried data and voice traffic. That provided predictable routes, but was very expensive and difficult to scale because of the need to put in extensive infrastructure.

So MPLS have evolved to allow control of network routing, creating paths that act like a point to point connection within a network, but are virtual and flexible instead of physical.MPLS has no physical circuits, but virtual circuits.

Label Switching in MPLS routing-

The packets travel through the MPLS network, their labels are switched.The packet enters the edge of the MPLS backbone, is examined, classified and given an appropriate label, and forwarded to the next hop in the pre set label switched path(LSP). As the packet travels that path each router on the path uses the label and not other information. Such as the IP header to make the forwarding decision that keeps the packet moving along the label switched path.

MPLS is a simple, secure telecommunications solution. Because you do not have to deal with encryption or special hardware, MPLS can serve as the backbone of cost-effective, secure communicattions. Moreover MPLS is a flexible network solutionthat allows companies to scale and customise their solutions.

When compared to all the other routing techniques available MPLS is still the fastest data carrying technique available.