Multiprotocol label switching (MPLS)

• Multiprotocol label switching (MPLS)

  An emerging WAN technology
• MPLS


  • Uses packet-switching technology
• How MPLS operates


  1. Adds MPLS labels to each packet generated by the customer

  2. Switches the packets in the provider's network
• Use of MPLS labels in the provider's network

  Allows the MPLS provider to switch the data based on the label and not the layer 3 network addressing
• MPLS


  Works at layer 2.5, not a true layer 2 or layer 3 protocol
• MPLS


  • An extremely efficient protocol for moving data
• MPLS


  Considered a packet-switching technology
• MPLS


  • Can be used with different types of connectivity technologies, such as SONET, Ethernet, and ATM
• An underlying leased line is required for MPLS to operate
• MPLS


  A great connectivity method for branch offices to a centralized corporate office
• Cost


  Increases with the addition of each branch office, so at some point these lease lines become uneconomical