Learn About MPLS In Telecommunications

MPLS stands for multiprotocol label switching. It was originally invented by engineers from Ipsilon Networks, but was not successful in the marketplace. It was later built upon by Cisco Systems and given to the IETF for standardization. With the help of several vendors, it became a leading telecommunication standard. Using labels to direct data from one network node to another, MPLS makes it easy to make what are known as "virtual links" between nodes that are far apart. Used in high-performance telecommunications networks, MPLS works by putting what is known as a label stack in front of the transmitted data. This label stack contains four fields, a label value, a traffic class, a bottom of stack flag, and a time to live field. Data is transmitted in effective chunks directed by the information in these label stacks. Because of its ability to integrate what is known as layer 2 information about network links into the layer 3 IP within a system, the standard can improve and simplify IP-packet communications. The standard gives those who operate a network a higher ability to route traffic around congestion and link failures. Minimal packet loss and latency is possible using the standard, as networks can effectively route traffic to improve the quality of service for certain individuals. This ability to route traffic allows for a great deal of control over networks, allowing service providers to customize services for different priority levels and service plans. When a packet enters an MPLS network, a label edge router (LER) gives it a unique identifier, or label. As stated above, this label contains transmission data and refers to the level 3 IP information, differentiated service, and layer 4 socket information. When this information has been classified and mapped, the packets are assigned to label switch paths (LSPs). It is on these paths that label switch routers (LSRs) put outgoing label information on the packets. Multiprotocol label switching can be implemented along with any existing infrastructure to create efficient, scalable, secure networks that allow for highly customizable services. Originally proposed to increase the forwarding speed of routers, the technology has been shown to be better than current IP technology at traffic engineering and VPN support. With its use, network operators have heightened capabilities in efficiently and effectively routing data. The label stacks used in an MPLS system act almost as a zip code, directing the traffic to its intended destination. While traditional network process IP information at every router, an MPLS network can use the label stacks to direct traffic with more precision, eliminating the need for such hop by hop routing. In addition to standard data, the standard is also fully capable of supporting voice data, making it ideal for more efficient VoIP networks. Article Source: http://EzineArticles.com/?expert=Jacob_Richard