Introduction: MPLS is a service that allows packets to be transferred from one node to another on a network. It is used for technologies like optic fiber and ensures that packets of information can be transferred to more than one data link at a time. Multiprotocol Label Switching transfers packets of information at a faster rate than the old technology.System: MPLS Providers use a system of short label instructions rather than long network addresses; this system speeds up the process. It only uses packets of information in its network. This technology improves performance and reliability but is not as easy to access by IT technicians as it is less visible. This technology will work with many protocols and different data.How it works: MPLS works by using label stacks, which are one or more labels. They are switched by the routers to direct each packet. When the labels are changed it is called a swap and when one label is removed it is called a pop. The labels are placed on the packets which is called a push. When the label is changed the packet goes down a tunnel to its next destination. The router that changes the labels is known as the label switch. The Multiprotocol Label Switching only recognizes the top label when it directs the packet.Where MPLS works: it works in IP4 and IP6 environments and is designed for use with IPs mainly. Most technology like frames and ATM are now in the process of being converted over. MPLS Providers connect 2 large destinations and can connect as many as 2,000 to 5,000 retail stores. They direct traffic for Ethernet and IP datagram also it is used for telecommunications traffic engineering. It is now used in SONET and SDH networks to produce higher speeds and more efficient technology.Competition: There are now some competitors for MPLS mainly GMPLS, which extends the technology to service any label switching, process. This means that it does not just deal with packets of information but all sorts of different data. Provider Backbone Bridges are also being used in Ethernet technology.MPLS has meant that there has been a revolution in technology for telecommunications. Multiprotocol Label Switching has taken over from the old way of using lengthy IP network names to shortened labels. This has enabled this technology to use multiple data links and now the technology is going one further step and encompassing multiple switches. As technology advances there will be numerous advances using the MPLS Providers as a spring board to more advanced uses of this technology.