In the global network of computers and communication, telemarketing, switching labels (MPLS) is a mechanism to carry data is that some of the characteristics of the network, switching the Rotary on the network switch envelope competition. MPLS layer in OSI model acts that in general, the meanings of the traditional layer 2 (transport layer data) and Layer 3 (network layer) is considered, so often, to Layer 2 and 3, reference does, and some it layer 2/5 call. MPLS in order to provide the service carry data for the customer, the Rotary and the client, switching the envelope, which is a service model diagrams, it can produce was designed. It can carry various types of traffic includes packets, the IP well, Sonet, etc., ATM and Ethernet, use geared.